./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs --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 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:02:14,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:02:14,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:02:14,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:02:14,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:02:14,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:02:14,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:02:14,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:02:14,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:02:14,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:02:14,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:02:14,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:02:14,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:02:14,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:02:14,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:02:14,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:02:14,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:02:14,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:02:14,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:02:14,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:02:14,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:02:14,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:02:14,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:02:14,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:02:14,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:02:14,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:02:14,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:02:14,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:02:14,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:02:14,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:02:14,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:02:14,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:02:14,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:02:14,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:02:14,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:02:14,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:02:14,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:02:14,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:02:14,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:02:14,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:02:14,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:02:14,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:02:14,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:02:14,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:02:14,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:02:14,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:02:14,911 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:02:14,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:02:14,911 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:02:14,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:02:14,912 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:02:14,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:02:14,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:02:14,912 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:02:14,913 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:02:14,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:02:14,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:02:14,914 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:02:14,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:02:14,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:02:14,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:02:14,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:02:14,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:02:14,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:02:14,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:02:14,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:02:14,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:02:14,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:02:14,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:02:14,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:02:14,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:02:14,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:02:14,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:02:14,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:02:14,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:02:14,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:02:14,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:02:14,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:02:14,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:02:14,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:02:14,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:02:14,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:02:14,920 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 [2021-11-19 15:02:15,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:02:15,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:02:15,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:02:15,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:02:15,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:02:15,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2021-11-19 15:02:15,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/a99137c23/e8fd2f287014452bae2c59075c604df1/FLAG70136aee7 [2021-11-19 15:02:15,899 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:02:15,900 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2021-11-19 15:02:15,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/a99137c23/e8fd2f287014452bae2c59075c604df1/FLAG70136aee7 [2021-11-19 15:02:16,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/a99137c23/e8fd2f287014452bae2c59075c604df1 [2021-11-19 15:02:16,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:02:16,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:02:16,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:16,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:02:16,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:02:16,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:16" (1/1) ... [2021-11-19 15:02:16,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38746e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:16, skipping insertion in model container [2021-11-19 15:02:16,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:16" (1/1) ... [2021-11-19 15:02:16,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:02:16,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:02:16,682 WARN L230 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2021-11-19 15:02:16,930 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:16,947 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) [2021-11-19 15:02:16,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e2ae875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:16, skipping insertion in model container [2021-11-19 15:02:16,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:16,949 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:02:16,951 INFO L158 Benchmark]: Toolchain (without parser) took 800.65ms. Allocated memory is still 111.1MB. Free memory was 66.4MB in the beginning and 70.7MB in the end (delta: -4.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-11-19 15:02:16,952 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:02:16,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.60ms. Allocated memory is still 111.1MB. Free memory was 66.2MB in the beginning and 71.0MB in the end (delta: -4.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2021-11-19 15:02:16,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.60ms. Allocated memory is still 111.1MB. Free memory was 66.2MB in the beginning and 71.0MB in the end (delta: -4.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2898]: 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs --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 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:02:19,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:02:19,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:02:19,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:02:19,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:02:19,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:02:19,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:02:19,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:02:19,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:02:19,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:02:19,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:02:19,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:02:19,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:02:19,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:02:19,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:02:19,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:02:19,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:02:19,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:02:19,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:02:19,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:02:19,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:02:19,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:02:19,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:02:19,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:02:19,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:02:19,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:02:19,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:02:19,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:02:19,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:02:19,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:02:19,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:02:19,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:02:19,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:02:19,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:02:19,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:02:19,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:02:19,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:02:19,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:02:19,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:02:19,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:02:19,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:02:19,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:02:19,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:02:19,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:02:19,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:02:19,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:02:19,335 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:02:19,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:02:19,335 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:02:19,336 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:02:19,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:02:19,336 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:02:19,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:02:19,339 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:02:19,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:02:19,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:02:19,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:02:19,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:02:19,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:02:19,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:02:19,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:02:19,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:02:19,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:02:19,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:02:19,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:02:19,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:02:19,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:02:19,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:02:19,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:02:19,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:02:19,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:02:19,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:02:19,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:02:19,345 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:02:19,345 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:19,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:02:19,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:02:19,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:02:19,346 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 [2021-11-19 15:02:19,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:02:19,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:02:19,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:02:19,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:02:19,830 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:02:19,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2021-11-19 15:02:19,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/e9b88eac0/877f57d90a1d439a8a48a4edb3bf322e/FLAGf24b73c2d [2021-11-19 15:02:20,736 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:02:20,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2021-11-19 15:02:20,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/e9b88eac0/877f57d90a1d439a8a48a4edb3bf322e/FLAGf24b73c2d [2021-11-19 15:02:20,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/data/e9b88eac0/877f57d90a1d439a8a48a4edb3bf322e [2021-11-19 15:02:20,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:02:20,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:02:20,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:20,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:02:20,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:02:20,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:20" (1/1) ... [2021-11-19 15:02:20,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6921bed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:20, skipping insertion in model container [2021-11-19 15:02:20,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:02:20" (1/1) ... [2021-11-19 15:02:20,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:02:20,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:02:21,477 WARN L230 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2021-11-19 15:02:21,627 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:21,640 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:02:21,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:02:21,718 WARN L230 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2021-11-19 15:02:21,781 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:21,790 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:02:21,849 WARN L230 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_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2021-11-19 15:02:21,949 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:02:21,979 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:02:21,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21 WrapperNode [2021-11-19 15:02:21,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:02:21,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:02:21,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:02:21,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:02:21,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,109 INFO L137 Inliner]: procedures = 91, calls = 330, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 771 [2021-11-19 15:02:22,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:02:22,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:02:22,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:02:22,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:02:22,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:02:22,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:02:22,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:02:22,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:02:22,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (1/1) ... [2021-11-19 15:02:22,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:02:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:02:22,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:02:22,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:02:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:02:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-19 15:02:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-19 15:02:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 15:02:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 15:02:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 15:02:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 15:02:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 15:02:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 15:02:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 15:02:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 15:02:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 15:02:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 15:02:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-19 15:02:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-19 15:02:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-19 15:02:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-19 15:02:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 15:02:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 15:02:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 15:02:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 15:02:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 15:02:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 15:02:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:02:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 15:02:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 15:02:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 15:02:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 15:02:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 15:02:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 15:02:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 15:02:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 15:02:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 15:02:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 15:02:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 15:02:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 15:02:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 15:02:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 15:02:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 15:02:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 15:02:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:02:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:02:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 15:02:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 15:02:22,474 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:02:22,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:02:23,612 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:02:23,634 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:02:23,635 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:02:23,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:02:23 BoogieIcfgContainer [2021-11-19 15:02:23,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:02:23,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:02:23,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:02:23,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:02:23,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:02:20" (1/3) ... [2021-11-19 15:02:23,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701cce60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:02:23, skipping insertion in model container [2021-11-19 15:02:23,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:02:21" (2/3) ... [2021-11-19 15:02:23,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701cce60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:02:23, skipping insertion in model container [2021-11-19 15:02:23,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:02:23" (3/3) ... [2021-11-19 15:02:23,649 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2021-11-19 15:02:23,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:02:23,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:02:23,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:02:23,739 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 [2021-11-19 15:02:23,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:02:23,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 526 states, 418 states have (on average 1.7177033492822966) internal successors, (718), 439 states have internal predecessors, (718), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-19 15:02:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 15:02:23,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:23,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:23,838 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:23,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1063489521, now seen corresponding path program 1 times [2021-11-19 15:02:23,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:23,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733159227] [2021-11-19 15:02:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:23,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:23,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:23,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:02:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:24,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:02:24,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:24,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:24,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:24,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733159227] [2021-11-19 15:02:24,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733159227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:24,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:24,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:02:24,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363142182] [2021-11-19 15:02:24,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:24,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:02:24,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:24,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:02:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:02:24,843 INFO L87 Difference]: Start difference. First operand has 526 states, 418 states have (on average 1.7177033492822966) internal successors, (718), 439 states have internal predecessors, (718), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 15:02:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:24,921 INFO L93 Difference]: Finished difference Result 547 states and 920 transitions. [2021-11-19 15:02:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:02:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2021-11-19 15:02:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:24,954 INFO L225 Difference]: With dead ends: 547 [2021-11-19 15:02:24,954 INFO L226 Difference]: Without dead ends: 518 [2021-11-19 15:02:24,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:02:24,968 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:24,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:02:24,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-19 15:02:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2021-11-19 15:02:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 412 states have (on average 1.7160194174757282) internal successors, (707), 431 states have internal predecessors, (707), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-19 15:02:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 874 transitions. [2021-11-19 15:02:25,117 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 874 transitions. Word has length 74 [2021-11-19 15:02:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:25,119 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 874 transitions. [2021-11-19 15:02:25,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 15:02:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 874 transitions. [2021-11-19 15:02:25,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 15:02:25,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:25,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:25,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:25,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:25,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:25,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1607488709, now seen corresponding path program 1 times [2021-11-19 15:02:25,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:25,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52923693] [2021-11-19 15:02:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:25,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:25,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:25,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:25,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:02:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:25,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:25,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:25,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:26,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:26,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52923693] [2021-11-19 15:02:26,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52923693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:26,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:26,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:02:26,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163948283] [2021-11-19 15:02:26,111 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:26,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:26,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:02:26,115 INFO L87 Difference]: Start difference. First operand 518 states and 874 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 15:02:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:26,275 INFO L93 Difference]: Finished difference Result 1020 states and 1726 transitions. [2021-11-19 15:02:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:02:26,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2021-11-19 15:02:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:26,283 INFO L225 Difference]: With dead ends: 1020 [2021-11-19 15:02:26,283 INFO L226 Difference]: Without dead ends: 518 [2021-11-19 15:02:26,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:02:26,292 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 15 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4295 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:26,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4295 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:02:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-19 15:02:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2021-11-19 15:02:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 412 states have (on average 1.7014563106796117) internal successors, (701), 431 states have internal predecessors, (701), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-19 15:02:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 868 transitions. [2021-11-19 15:02:26,337 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 868 transitions. Word has length 76 [2021-11-19 15:02:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:26,338 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 868 transitions. [2021-11-19 15:02:26,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 15:02:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 868 transitions. [2021-11-19 15:02:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 15:02:26,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:26,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:26,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:26,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:26,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1997699781, now seen corresponding path program 1 times [2021-11-19 15:02:26,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:26,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095653609] [2021-11-19 15:02:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:26,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:26,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:26,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:02:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:26,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:02:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:27,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:27,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:27,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095653609] [2021-11-19 15:02:27,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095653609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:27,427 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:27,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 15:02:27,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343822371] [2021-11-19 15:02:27,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:27,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:02:27,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:02:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:02:27,429 INFO L87 Difference]: Start difference. First operand 518 states and 868 transitions. Second operand has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 15:02:27,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:27,606 INFO L93 Difference]: Finished difference Result 978 states and 1643 transitions. [2021-11-19 15:02:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:02:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 81 [2021-11-19 15:02:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:27,613 INFO L225 Difference]: With dead ends: 978 [2021-11-19 15:02:27,613 INFO L226 Difference]: Without dead ends: 512 [2021-11-19 15:02:27,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:02:27,617 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 117 mSDsluCounter, 5888 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 6743 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:27,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 6743 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-19 15:02:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-11-19 15:02:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 406 states have (on average 1.6945812807881773) internal successors, (688), 425 states have internal predecessors, (688), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-19 15:02:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 855 transitions. [2021-11-19 15:02:27,660 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 855 transitions. Word has length 81 [2021-11-19 15:02:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:27,660 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 855 transitions. [2021-11-19 15:02:27,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 15:02:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 855 transitions. [2021-11-19 15:02:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 15:02:27,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:27,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:27,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:27,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:27,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -122849018, now seen corresponding path program 1 times [2021-11-19 15:02:27,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:27,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858196799] [2021-11-19 15:02:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:27,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:27,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:27,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:02:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:28,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:02:28,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:28,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:28,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:28,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858196799] [2021-11-19 15:02:28,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858196799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:28,595 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:28,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:02:28,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834542803] [2021-11-19 15:02:28,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:28,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:28,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:02:28,604 INFO L87 Difference]: Start difference. First operand 512 states and 855 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 15:02:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:28,817 INFO L93 Difference]: Finished difference Result 981 states and 1644 transitions. [2021-11-19 15:02:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:02:28,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2021-11-19 15:02:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:28,827 INFO L225 Difference]: With dead ends: 981 [2021-11-19 15:02:28,827 INFO L226 Difference]: Without dead ends: 512 [2021-11-19 15:02:28,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:02:28,839 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 112 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:28,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 3196 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-19 15:02:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-11-19 15:02:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 406 states have (on average 1.6354679802955665) internal successors, (664), 425 states have internal predecessors, (664), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-19 15:02:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 831 transitions. [2021-11-19 15:02:28,880 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 831 transitions. Word has length 82 [2021-11-19 15:02:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:28,881 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 831 transitions. [2021-11-19 15:02:28,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 15:02:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 831 transitions. [2021-11-19 15:02:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 15:02:28,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:28,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:28,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:29,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:29,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1043480971, now seen corresponding path program 1 times [2021-11-19 15:02:29,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:29,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342082002] [2021-11-19 15:02:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:29,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:29,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:29,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:02:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:29,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:02:29,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:29,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:29,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:29,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342082002] [2021-11-19 15:02:29,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342082002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:29,937 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:29,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 15:02:29,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732761830] [2021-11-19 15:02:29,938 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:29,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:02:29,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:02:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:02:29,939 INFO L87 Difference]: Start difference. First operand 512 states and 831 transitions. Second operand has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 15:02:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:30,073 INFO L93 Difference]: Finished difference Result 972 states and 1606 transitions. [2021-11-19 15:02:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:02:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-11-19 15:02:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:30,080 INFO L225 Difference]: With dead ends: 972 [2021-11-19 15:02:30,080 INFO L226 Difference]: Without dead ends: 491 [2021-11-19 15:02:30,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:02:30,086 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 89 mSDsluCounter, 4813 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:30,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 5632 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-19 15:02:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-19 15:02:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 385 states have (on average 1.6597402597402597) internal successors, (639), 404 states have internal predecessors, (639), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-19 15:02:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 806 transitions. [2021-11-19 15:02:30,117 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 806 transitions. Word has length 84 [2021-11-19 15:02:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:30,117 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 806 transitions. [2021-11-19 15:02:30,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 15:02:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 806 transitions. [2021-11-19 15:02:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 15:02:30,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:30,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:30,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:30,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:30,347 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1576516792, now seen corresponding path program 1 times [2021-11-19 15:02:30,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:30,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515132550] [2021-11-19 15:02:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:30,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:30,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:30,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:02:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:30,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:02:30,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:30,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:31,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:31,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515132550] [2021-11-19 15:02:31,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515132550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:31,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:31,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 15:02:31,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513280789] [2021-11-19 15:02:31,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:31,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:02:31,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:02:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:02:31,379 INFO L87 Difference]: Start difference. First operand 491 states and 806 transitions. Second operand has 13 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 15:02:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:31,602 INFO L93 Difference]: Finished difference Result 945 states and 1570 transitions. [2021-11-19 15:02:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:02:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-11-19 15:02:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:31,608 INFO L225 Difference]: With dead ends: 945 [2021-11-19 15:02:31,609 INFO L226 Difference]: Without dead ends: 491 [2021-11-19 15:02:31,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:02:31,613 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 30 mSDsluCounter, 7880 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8671 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:31,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 8671 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:02:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-19 15:02:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-19 15:02:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 385 states have (on average 1.6571428571428573) internal successors, (638), 404 states have internal predecessors, (638), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-19 15:02:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 805 transitions. [2021-11-19 15:02:31,638 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 805 transitions. Word has length 87 [2021-11-19 15:02:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:31,638 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 805 transitions. [2021-11-19 15:02:31,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 15:02:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 805 transitions. [2021-11-19 15:02:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 15:02:31,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:31,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:31,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:31,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:31,860 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash 311775717, now seen corresponding path program 1 times [2021-11-19 15:02:31,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:31,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802744116] [2021-11-19 15:02:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:31,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:31,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:31,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:31,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:02:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:32,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 15:02:32,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:32,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:33,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:33,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802744116] [2021-11-19 15:02:33,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802744116] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:33,224 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:33,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 15:02:33,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17156411] [2021-11-19 15:02:33,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:33,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:02:33,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:02:33,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:02:33,226 INFO L87 Difference]: Start difference. First operand 491 states and 805 transitions. Second operand has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 12 states have internal predecessors, (122), 6 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-19 15:02:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:36,704 INFO L93 Difference]: Finished difference Result 1074 states and 1813 transitions. [2021-11-19 15:02:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:02:36,705 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 12 states have internal predecessors, (122), 6 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) Word has length 88 [2021-11-19 15:02:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:36,712 INFO L225 Difference]: With dead ends: 1074 [2021-11-19 15:02:36,712 INFO L226 Difference]: Without dead ends: 628 [2021-11-19 15:02:36,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:02:36,727 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 1537 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:36,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 2938 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 15:02:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-19 15:02:36,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 495. [2021-11-19 15:02:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 388 states have (on average 1.652061855670103) internal successors, (641), 407 states have internal predecessors, (641), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (97), 80 states have call predecessors, (97), 81 states have call successors, (97) [2021-11-19 15:02:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 824 transitions. [2021-11-19 15:02:36,765 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 824 transitions. Word has length 88 [2021-11-19 15:02:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:36,766 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 824 transitions. [2021-11-19 15:02:36,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 12 states have internal predecessors, (122), 6 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-19 15:02:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 824 transitions. [2021-11-19 15:02:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 15:02:36,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:36,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:36,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:36,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1564599194, now seen corresponding path program 1 times [2021-11-19 15:02:36,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:36,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887002473] [2021-11-19 15:02:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:36,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:36,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:36,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:36,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:02:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:37,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:02:37,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:37,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:37,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:37,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887002473] [2021-11-19 15:02:37,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887002473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:37,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:37,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-19 15:02:37,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055282749] [2021-11-19 15:02:37,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:37,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 15:02:37,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 15:02:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:37,959 INFO L87 Difference]: Start difference. First operand 495 states and 824 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 15:02:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:43,662 INFO L93 Difference]: Finished difference Result 1802 states and 3112 transitions. [2021-11-19 15:02:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 15:02:43,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 89 [2021-11-19 15:02:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:43,678 INFO L225 Difference]: With dead ends: 1802 [2021-11-19 15:02:43,679 INFO L226 Difference]: Without dead ends: 1352 [2021-11-19 15:02:43,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:02:43,684 INFO L933 BasicCegarLoop]: 1352 mSDtfsCounter, 2836 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 5245 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2909 SdHoareTripleChecker+Valid, 4096 SdHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 5245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:43,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2909 Valid, 4096 Invalid, 6031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 5245 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 15:02:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-11-19 15:02:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1264. [2021-11-19 15:02:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 988 states have (on average 1.6680161943319838) internal successors, (1648), 1036 states have internal predecessors, (1648), 223 states have call successors, (223), 51 states have call predecessors, (223), 52 states have return successors, (241), 213 states have call predecessors, (241), 218 states have call successors, (241) [2021-11-19 15:02:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2112 transitions. [2021-11-19 15:02:43,807 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2112 transitions. Word has length 89 [2021-11-19 15:02:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:43,807 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 2112 transitions. [2021-11-19 15:02:43,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 15:02:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2112 transitions. [2021-11-19 15:02:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 15:02:43,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:43,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:43,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:44,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:44,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash 839046955, now seen corresponding path program 1 times [2021-11-19 15:02:44,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:44,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551656505] [2021-11-19 15:02:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:44,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:44,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:44,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:02:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:44,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:02:44,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:44,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:45,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:45,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551656505] [2021-11-19 15:02:45,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551656505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:45,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:45,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-19 15:02:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875926657] [2021-11-19 15:02:45,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:45,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 15:02:45,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 15:02:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:45,115 INFO L87 Difference]: Start difference. First operand 1264 states and 2112 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 6 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-19 15:02:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:49,646 INFO L93 Difference]: Finished difference Result 3484 states and 5923 transitions. [2021-11-19 15:02:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 15:02:49,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 6 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 91 [2021-11-19 15:02:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:49,676 INFO L225 Difference]: With dead ends: 3484 [2021-11-19 15:02:49,676 INFO L226 Difference]: Without dead ends: 2576 [2021-11-19 15:02:49,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:02:49,687 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 4163 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 3033 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4234 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 3965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 3033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:49,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4234 Valid, 2137 Invalid, 3965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 3033 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-19 15:02:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-11-19 15:02:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2364. [2021-11-19 15:02:49,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 1849 states have (on average 1.6706327744726879) internal successors, (3089), 1942 states have internal predecessors, (3089), 407 states have call successors, (407), 91 states have call predecessors, (407), 107 states have return successors, (498), 392 states have call predecessors, (498), 402 states have call successors, (498) [2021-11-19 15:02:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3994 transitions. [2021-11-19 15:02:49,915 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3994 transitions. Word has length 91 [2021-11-19 15:02:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:49,916 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3994 transitions. [2021-11-19 15:02:49,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 6 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-19 15:02:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3994 transitions. [2021-11-19 15:02:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 15:02:49,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:49,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:49,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:50,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:50,137 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1643733029, now seen corresponding path program 1 times [2021-11-19 15:02:50,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:50,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833277012] [2021-11-19 15:02:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:50,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:50,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:50,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:02:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:02:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:50,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:51,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:51,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833277012] [2021-11-19 15:02:51,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833277012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:51,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:51,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-19 15:02:51,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480794024] [2021-11-19 15:02:51,546 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:51,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:02:51,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:02:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:02:51,547 INFO L87 Difference]: Start difference. First operand 2364 states and 3994 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 12 states have internal predecessors, (124), 7 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-19 15:02:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:59,637 INFO L93 Difference]: Finished difference Result 6405 states and 10881 transitions. [2021-11-19 15:02:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 15:02:59,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 12 states have internal predecessors, (124), 7 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) Word has length 96 [2021-11-19 15:02:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:59,684 INFO L225 Difference]: With dead ends: 6405 [2021-11-19 15:02:59,684 INFO L226 Difference]: Without dead ends: 4347 [2021-11-19 15:02:59,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:02:59,700 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 3986 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 7229 mSolverCounterSat, 1073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4058 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 8302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1073 IncrementalHoareTripleChecker+Valid, 7229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:59,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4058 Valid, 4038 Invalid, 8302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1073 Valid, 7229 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 15:02:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-11-19 15:02:59,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4185. [2021-11-19 15:02:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3263 states have (on average 1.661048115231382) internal successors, (5420), 3423 states have internal predecessors, (5420), 725 states have call successors, (725), 167 states have call predecessors, (725), 196 states have return successors, (899), 702 states have call predecessors, (899), 720 states have call successors, (899) [2021-11-19 15:03:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 7044 transitions. [2021-11-19 15:03:00,003 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 7044 transitions. Word has length 96 [2021-11-19 15:03:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:00,004 INFO L470 AbstractCegarLoop]: Abstraction has 4185 states and 7044 transitions. [2021-11-19 15:03:00,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 12 states have internal predecessors, (124), 7 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-19 15:03:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 7044 transitions. [2021-11-19 15:03:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 15:03:00,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:00,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:00,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:00,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:00,229 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1757746257, now seen corresponding path program 1 times [2021-11-19 15:03:00,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:00,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491282384] [2021-11-19 15:03:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:00,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:00,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:00,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:03:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:00,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:03:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:00,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:01,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:01,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491282384] [2021-11-19 15:03:01,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491282384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:01,044 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:01,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:03:01,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910131225] [2021-11-19 15:03:01,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:01,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:03:01,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:03:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:03:01,046 INFO L87 Difference]: Start difference. First operand 4185 states and 7044 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-19 15:03:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:01,386 INFO L93 Difference]: Finished difference Result 8330 states and 14172 transitions. [2021-11-19 15:03:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:03:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2021-11-19 15:03:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:01,434 INFO L225 Difference]: With dead ends: 8330 [2021-11-19 15:03:01,434 INFO L226 Difference]: Without dead ends: 4185 [2021-11-19 15:03:01,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:03:01,461 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 468 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:01,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1606 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:03:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2021-11-19 15:03:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 4185. [2021-11-19 15:03:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3263 states have (on average 1.6420471958320564) internal successors, (5358), 3423 states have internal predecessors, (5358), 725 states have call successors, (725), 167 states have call predecessors, (725), 196 states have return successors, (899), 702 states have call predecessors, (899), 720 states have call successors, (899) [2021-11-19 15:03:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 6982 transitions. [2021-11-19 15:03:01,782 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 6982 transitions. Word has length 103 [2021-11-19 15:03:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:01,782 INFO L470 AbstractCegarLoop]: Abstraction has 4185 states and 6982 transitions. [2021-11-19 15:03:01,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-19 15:03:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 6982 transitions. [2021-11-19 15:03:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 15:03:01,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:01,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:01,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:02,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:02,006 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:02,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -179301962, now seen corresponding path program 1 times [2021-11-19 15:03:02,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:02,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353188574] [2021-11-19 15:03:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:02,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:02,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:02,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:02,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:03:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:02,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:03:02,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:03:02,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:03:02,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:02,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353188574] [2021-11-19 15:03:02,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353188574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:02,998 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:02,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-19 15:03:02,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622956262] [2021-11-19 15:03:02,998 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:02,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:03:02,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:03:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:03:03,000 INFO L87 Difference]: Start difference. First operand 4185 states and 6982 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 15:03:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:06,848 INFO L93 Difference]: Finished difference Result 8419 states and 14091 transitions. [2021-11-19 15:03:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:03:06,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 108 [2021-11-19 15:03:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:06,895 INFO L225 Difference]: With dead ends: 8419 [2021-11-19 15:03:06,895 INFO L226 Difference]: Without dead ends: 4647 [2021-11-19 15:03:06,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:03:06,919 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 3276 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3350 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:06,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3350 Valid, 2112 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 15:03:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2021-11-19 15:03:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4365. [2021-11-19 15:03:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 3399 states have (on average 1.6298911444542512) internal successors, (5540), 3569 states have internal predecessors, (5540), 744 states have call successors, (744), 183 states have call predecessors, (744), 221 states have return successors, (942), 720 states have call predecessors, (942), 739 states have call successors, (942) [2021-11-19 15:03:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 7226 transitions. [2021-11-19 15:03:07,262 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 7226 transitions. Word has length 108 [2021-11-19 15:03:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:07,263 INFO L470 AbstractCegarLoop]: Abstraction has 4365 states and 7226 transitions. [2021-11-19 15:03:07,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 15:03:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 7226 transitions. [2021-11-19 15:03:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:03:07,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:07,267 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:07,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:07,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:07,480 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash 360327549, now seen corresponding path program 1 times [2021-11-19 15:03:07,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:07,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564805809] [2021-11-19 15:03:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:07,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:07,482 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:07,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:03:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:07,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 15:03:07,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:03:08,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:03:08,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:08,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564805809] [2021-11-19 15:03:08,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564805809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:08,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:08,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 15:03:08,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30492245] [2021-11-19 15:03:08,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:08,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:03:08,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:03:08,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:03:08,792 INFO L87 Difference]: Start difference. First operand 4365 states and 7226 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 11 states have internal predecessors, (139), 6 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-19 15:03:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:15,657 INFO L93 Difference]: Finished difference Result 11586 states and 19385 transitions. [2021-11-19 15:03:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 15:03:15,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 11 states have internal predecessors, (139), 6 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 5 states have call successors, (20) Word has length 113 [2021-11-19 15:03:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:15,720 INFO L225 Difference]: With dead ends: 11586 [2021-11-19 15:03:15,721 INFO L226 Difference]: Without dead ends: 7632 [2021-11-19 15:03:15,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2021-11-19 15:03:15,740 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 3800 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 6296 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3869 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 7315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 6296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:15,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3869 Valid, 3464 Invalid, 7315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 6296 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 15:03:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2021-11-19 15:03:16,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 7580. [2021-11-19 15:03:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7580 states, 5912 states have (on average 1.6432679296346413) internal successors, (9715), 6185 states have internal predecessors, (9715), 1311 states have call successors, (1311), 329 states have call predecessors, (1311), 356 states have return successors, (1591), 1269 states have call predecessors, (1591), 1306 states have call successors, (1591) [2021-11-19 15:03:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 12617 transitions. [2021-11-19 15:03:16,258 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 12617 transitions. Word has length 113 [2021-11-19 15:03:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:16,258 INFO L470 AbstractCegarLoop]: Abstraction has 7580 states and 12617 transitions. [2021-11-19 15:03:16,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 11 states have internal predecessors, (139), 6 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-19 15:03:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 12617 transitions. [2021-11-19 15:03:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:03:16,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:16,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:16,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:16,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash 226314043, now seen corresponding path program 1 times [2021-11-19 15:03:16,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:16,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722858198] [2021-11-19 15:03:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:16,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:16,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:16,488 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:16,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:03:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:16,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:03:16,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:03:17,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:03:17,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:17,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722858198] [2021-11-19 15:03:17,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722858198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:17,937 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:17,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 15:03:17,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949650939] [2021-11-19 15:03:17,937 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:17,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:03:17,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:03:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:03:17,939 INFO L87 Difference]: Start difference. First operand 7580 states and 12617 transitions. Second operand has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 5 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (20), 9 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 15:03:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:23,527 INFO L93 Difference]: Finished difference Result 19206 states and 32404 transitions. [2021-11-19 15:03:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 15:03:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 5 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (20), 9 states have call predecessors, (20), 4 states have call successors, (20) Word has length 113 [2021-11-19 15:03:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:23,673 INFO L225 Difference]: With dead ends: 19206 [2021-11-19 15:03:23,673 INFO L226 Difference]: Without dead ends: 11276 [2021-11-19 15:03:23,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:03:23,707 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 3858 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 4101 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3950 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 5175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 4101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:23,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3950 Valid, 2804 Invalid, 5175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 4101 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 15:03:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-11-19 15:03:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 10857. [2021-11-19 15:03:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10857 states, 8443 states have (on average 1.6372142603340045) internal successors, (13823), 8859 states have internal predecessors, (13823), 1901 states have call successors, (1901), 489 states have call predecessors, (1901), 512 states have return successors, (2346), 1808 states have call predecessors, (2346), 1896 states have call successors, (2346) [2021-11-19 15:03:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10857 states to 10857 states and 18070 transitions. [2021-11-19 15:03:24,438 INFO L78 Accepts]: Start accepts. Automaton has 10857 states and 18070 transitions. Word has length 113 [2021-11-19 15:03:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:24,439 INFO L470 AbstractCegarLoop]: Abstraction has 10857 states and 18070 transitions. [2021-11-19 15:03:24,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 5 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (20), 9 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 15:03:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 10857 states and 18070 transitions. [2021-11-19 15:03:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 15:03:24,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:24,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:24,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 15:03:24,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:24,660 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 757531011, now seen corresponding path program 1 times [2021-11-19 15:03:24,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:24,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585535665] [2021-11-19 15:03:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:24,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:24,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:24,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:03:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:25,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:03:25,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:03:25,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:03:25,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:25,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585535665] [2021-11-19 15:03:25,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585535665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:25,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:25,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 6] imperfect sequences [] total 9 [2021-11-19 15:03:25,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707372074] [2021-11-19 15:03:25,862 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:25,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:03:25,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:03:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:03:25,864 INFO L87 Difference]: Start difference. First operand 10857 states and 18070 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 15:03:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:27,294 INFO L93 Difference]: Finished difference Result 11114 states and 18547 transitions. [2021-11-19 15:03:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:03:27,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 114 [2021-11-19 15:03:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:27,385 INFO L225 Difference]: With dead ends: 11114 [2021-11-19 15:03:27,386 INFO L226 Difference]: Without dead ends: 11099 [2021-11-19 15:03:27,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:03:27,395 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 1563 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:27,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 2655 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:03:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-11-19 15:03:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 10939. [2021-11-19 15:03:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10939 states, 8511 states have (on average 1.6349430149218658) internal successors, (13915), 8924 states have internal predecessors, (13915), 1915 states have call successors, (1915), 489 states have call predecessors, (1915), 512 states have return successors, (2370), 1825 states have call predecessors, (2370), 1910 states have call successors, (2370) [2021-11-19 15:03:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 18200 transitions. [2021-11-19 15:03:28,077 INFO L78 Accepts]: Start accepts. Automaton has 10939 states and 18200 transitions. Word has length 114 [2021-11-19 15:03:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:28,078 INFO L470 AbstractCegarLoop]: Abstraction has 10939 states and 18200 transitions. [2021-11-19 15:03:28,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 15:03:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10939 states and 18200 transitions. [2021-11-19 15:03:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 15:03:28,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:28,084 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:28,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:28,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:28,309 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1035396738, now seen corresponding path program 1 times [2021-11-19 15:03:28,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:28,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712529883] [2021-11-19 15:03:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:28,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:28,312 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:28,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:03:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:28,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:03:28,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:03:28,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:03:29,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:29,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712529883] [2021-11-19 15:03:29,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712529883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:29,231 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:29,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:03:29,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880719892] [2021-11-19 15:03:29,232 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:29,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:03:29,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:29,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:03:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:03:29,233 INFO L87 Difference]: Start difference. First operand 10939 states and 18200 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 15:03:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:29,667 INFO L93 Difference]: Finished difference Result 10954 states and 18218 transitions. [2021-11-19 15:03:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2021-11-19 15:03:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:29,746 INFO L225 Difference]: With dead ends: 10954 [2021-11-19 15:03:29,746 INFO L226 Difference]: Without dead ends: 10939 [2021-11-19 15:03:29,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:03:29,755 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 37 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4688 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:29,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 4688 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:03:29,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-11-19 15:03:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10939. [2021-11-19 15:03:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10939 states, 8511 states have (on average 1.6328281048055457) internal successors, (13897), 8924 states have internal predecessors, (13897), 1915 states have call successors, (1915), 489 states have call predecessors, (1915), 512 states have return successors, (2370), 1825 states have call predecessors, (2370), 1910 states have call successors, (2370) [2021-11-19 15:03:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 18182 transitions. [2021-11-19 15:03:30,477 INFO L78 Accepts]: Start accepts. Automaton has 10939 states and 18182 transitions. Word has length 120 [2021-11-19 15:03:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:30,478 INFO L470 AbstractCegarLoop]: Abstraction has 10939 states and 18182 transitions. [2021-11-19 15:03:30,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 15:03:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10939 states and 18182 transitions. [2021-11-19 15:03:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-19 15:03:30,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:30,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:30,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 15:03:30,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:30,696 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1771185064, now seen corresponding path program 1 times [2021-11-19 15:03:30,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:30,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899671448] [2021-11-19 15:03:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:30,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:30,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:30,699 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:30,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:03:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:31,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 15:03:31,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:03:31,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:03:32,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:32,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899671448] [2021-11-19 15:03:32,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899671448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:32,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:32,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 15:03:32,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096713735] [2021-11-19 15:03:32,229 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:32,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:03:32,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:03:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:03:32,231 INFO L87 Difference]: Start difference. First operand 10939 states and 18182 transitions. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:03:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:34,425 INFO L93 Difference]: Finished difference Result 21815 states and 36325 transitions. [2021-11-19 15:03:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:03:34,426 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) Word has length 131 [2021-11-19 15:03:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:34,490 INFO L225 Difference]: With dead ends: 21815 [2021-11-19 15:03:34,490 INFO L226 Difference]: Without dead ends: 10977 [2021-11-19 15:03:34,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:03:34,522 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1803 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:34,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 1911 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 15:03:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10977 states. [2021-11-19 15:03:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10977 to 10939. [2021-11-19 15:03:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10939 states, 8511 states have (on average 1.6307131946892257) internal successors, (13879), 8924 states have internal predecessors, (13879), 1915 states have call successors, (1915), 489 states have call predecessors, (1915), 512 states have return successors, (2370), 1825 states have call predecessors, (2370), 1910 states have call successors, (2370) [2021-11-19 15:03:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 18164 transitions. [2021-11-19 15:03:35,259 INFO L78 Accepts]: Start accepts. Automaton has 10939 states and 18164 transitions. Word has length 131 [2021-11-19 15:03:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:35,259 INFO L470 AbstractCegarLoop]: Abstraction has 10939 states and 18164 transitions. [2021-11-19 15:03:35,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 11 states have internal predecessors, (153), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:03:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10939 states and 18164 transitions. [2021-11-19 15:03:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-19 15:03:35,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:35,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:35,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 15:03:35,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:35,492 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash -279140526, now seen corresponding path program 1 times [2021-11-19 15:03:35,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:35,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321302715] [2021-11-19 15:03:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:35,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:35,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:35,494 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:35,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:03:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:35,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:03:35,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 15:03:36,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 15:03:36,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:36,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321302715] [2021-11-19 15:03:36,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321302715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:36,470 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:36,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 15:03:36,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353447972] [2021-11-19 15:03:36,473 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:36,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:03:36,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:03:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:03:36,475 INFO L87 Difference]: Start difference. First operand 10939 states and 18164 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:03:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:40,760 INFO L93 Difference]: Finished difference Result 39301 states and 66778 transitions. [2021-11-19 15:03:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:40,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 132 [2021-11-19 15:03:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:40,994 INFO L225 Difference]: With dead ends: 39301 [2021-11-19 15:03:40,995 INFO L226 Difference]: Without dead ends: 28463 [2021-11-19 15:03:41,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:03:41,221 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 2196 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:41,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 2185 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 15:03:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28463 states. [2021-11-19 15:03:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28463 to 27698. [2021-11-19 15:03:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27698 states, 20567 states have (on average 1.6157922886176885) internal successors, (33232), 21934 states have internal predecessors, (33232), 5943 states have call successors, (5943), 1043 states have call predecessors, (5943), 1187 states have return successors, (7857), 5720 states have call predecessors, (7857), 5938 states have call successors, (7857) [2021-11-19 15:03:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27698 states to 27698 states and 47032 transitions. [2021-11-19 15:03:43,145 INFO L78 Accepts]: Start accepts. Automaton has 27698 states and 47032 transitions. Word has length 132 [2021-11-19 15:03:43,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:43,145 INFO L470 AbstractCegarLoop]: Abstraction has 27698 states and 47032 transitions. [2021-11-19 15:03:43,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:03:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 27698 states and 47032 transitions. [2021-11-19 15:03:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-19 15:03:43,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:43,150 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:43,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-19 15:03:43,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:43,367 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:43,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2011044290, now seen corresponding path program 1 times [2021-11-19 15:03:43,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:43,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108816497] [2021-11-19 15:03:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:43,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:43,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:43,369 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:43,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:03:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:43,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:03:43,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 15:03:43,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 15:03:44,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:44,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108816497] [2021-11-19 15:03:44,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108816497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:44,166 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:44,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-19 15:03:44,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750512386] [2021-11-19 15:03:44,167 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:44,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:03:44,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:03:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:03:44,169 INFO L87 Difference]: Start difference. First operand 27698 states and 47032 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 15:03:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:45,475 INFO L93 Difference]: Finished difference Result 28073 states and 47683 transitions. [2021-11-19 15:03:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:03:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 140 [2021-11-19 15:03:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:45,770 INFO L225 Difference]: With dead ends: 28073 [2021-11-19 15:03:45,771 INFO L226 Difference]: Without dead ends: 28058 [2021-11-19 15:03:45,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:03:45,782 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 77 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:45,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 3271 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:03:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28058 states. [2021-11-19 15:03:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28058 to 27752. [2021-11-19 15:03:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27752 states, 20621 states have (on average 1.6133553173948887) internal successors, (33269), 21988 states have internal predecessors, (33269), 5943 states have call successors, (5943), 1043 states have call predecessors, (5943), 1187 states have return successors, (7857), 5720 states have call predecessors, (7857), 5938 states have call successors, (7857) [2021-11-19 15:03:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27752 states to 27752 states and 47069 transitions. [2021-11-19 15:03:47,629 INFO L78 Accepts]: Start accepts. Automaton has 27752 states and 47069 transitions. Word has length 140 [2021-11-19 15:03:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:47,630 INFO L470 AbstractCegarLoop]: Abstraction has 27752 states and 47069 transitions. [2021-11-19 15:03:47,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 15:03:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 27752 states and 47069 transitions. [2021-11-19 15:03:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-19 15:03:47,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:47,638 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:47,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-19 15:03:47,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:47,854 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1328034440, now seen corresponding path program 1 times [2021-11-19 15:03:47,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:47,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004774770] [2021-11-19 15:03:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:47,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:47,856 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:47,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:03:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:48,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:03:48,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-19 15:03:48,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 15:03:49,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:49,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004774770] [2021-11-19 15:03:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004774770] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:49,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1085627103] [2021-11-19 15:03:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:49,222 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:49,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:03:49,228 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:03:49,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 15:03:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:49,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:03:49,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 15:03:49,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 15:03:50,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1085627103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:50,511 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:03:50,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [9, 8] total 18 [2021-11-19 15:03:50,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521865506] [2021-11-19 15:03:50,512 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:50,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:03:50,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:50,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:03:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:03:50,514 INFO L87 Difference]: Start difference. First operand 27752 states and 47069 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 5 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:03:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:55,930 INFO L93 Difference]: Finished difference Result 94467 states and 166140 transitions. [2021-11-19 15:03:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:03:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 5 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 168 [2021-11-19 15:03:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:56,347 INFO L225 Difference]: With dead ends: 94467 [2021-11-19 15:03:56,347 INFO L226 Difference]: Without dead ends: 66803 [2021-11-19 15:03:56,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:03:56,446 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 2271 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:56,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 1400 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 15:03:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66803 states. [2021-11-19 15:04:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66803 to 63071. [2021-11-19 15:04:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63071 states, 45603 states have (on average 1.6057715501173169) internal successors, (73228), 49004 states have internal predecessors, (73228), 14943 states have call successors, (14943), 2069 states have call predecessors, (14943), 2524 states have return successors, (23235), 14497 states have call predecessors, (23235), 14938 states have call successors, (23235) [2021-11-19 15:04:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63071 states to 63071 states and 111406 transitions. [2021-11-19 15:04:01,513 INFO L78 Accepts]: Start accepts. Automaton has 63071 states and 111406 transitions. Word has length 168 [2021-11-19 15:04:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:01,514 INFO L470 AbstractCegarLoop]: Abstraction has 63071 states and 111406 transitions. [2021-11-19 15:04:01,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 5 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:04:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 63071 states and 111406 transitions. [2021-11-19 15:04:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-19 15:04:01,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:01,524 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:01,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:01,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-19 15:04:01,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:01,941 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1780188764, now seen corresponding path program 1 times [2021-11-19 15:04:01,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:01,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498625792] [2021-11-19 15:04:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:01,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:01,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:01,943 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:01,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 15:04:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:02,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:04:02,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-19 15:04:02,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 15:04:03,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:03,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498625792] [2021-11-19 15:04:03,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498625792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:04:03,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1946851891] [2021-11-19 15:04:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:03,237 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:03,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:04:03,238 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:04:03,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba6f67a1-f1b8-47b2-9348-04ee5a034cb9/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 15:04:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:03,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:03,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 15:04:03,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 15:04:04,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1946851891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:04,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:04:04,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9, 8] total 16 [2021-11-19 15:04:04,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870505270] [2021-11-19 15:04:04,309 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:04,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:04:04,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:04:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:04:04,311 INFO L87 Difference]: Start difference. First operand 63071 states and 111406 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 15:04:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:12,796 INFO L93 Difference]: Finished difference Result 188197 states and 338540 transitions. [2021-11-19 15:04:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:12,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 169 [2021-11-19 15:04:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:13,782 INFO L225 Difference]: With dead ends: 188197 [2021-11-19 15:04:13,782 INFO L226 Difference]: Without dead ends: 125171 [2021-11-19 15:04:14,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:04:14,355 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 728 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:14,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1657 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:04:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125171 states.