./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:14,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:14,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:14,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:14,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:14,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:14,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:14,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:14,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:14,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:14,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:14,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:14,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:14,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:14,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:14,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:14,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:14,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:14,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:14,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:14,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:14,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:14,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:14,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:14,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:14,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:14,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:14,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:14,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:14,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:14,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:14,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:14,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:14,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:14,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:14,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:14,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:14,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:14,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:14,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:14,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:14,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:13:14,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:14,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:14,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:14,364 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:14,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:14,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:14,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:13:14,366 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:14,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:14,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:13:14,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:13:14,371 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:14,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:13:14,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:13:14,372 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:13:14,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:14,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:13:14,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:13:14,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:13:14,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:14,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:14,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:14,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:14,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:13:14,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:13:14,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:14,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:14,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:14,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:14,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:14,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:14,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:14,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:14,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:14,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:13:14,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:13:14,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:14,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:14,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:14,381 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_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 [2021-11-03 04:13:14,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:14,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:14,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:14,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:14,767 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:14,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2021-11-03 04:13:14,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/b11df5c02/caa78efafaf546729a0f0c7d9555bd11/FLAG60866a7d2 [2021-11-03 04:13:15,517 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:15,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2021-11-03 04:13:15,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/b11df5c02/caa78efafaf546729a0f0c7d9555bd11/FLAG60866a7d2 [2021-11-03 04:13:15,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/b11df5c02/caa78efafaf546729a0f0c7d9555bd11 [2021-11-03 04:13:15,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:15,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:15,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:15,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:15,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:15,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:15" (1/1) ... [2021-11-03 04:13:15,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb9ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:15, skipping insertion in model container [2021-11-03 04:13:15,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:15" (1/1) ... [2021-11-03 04:13:15,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:15,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:16,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2021-11-03 04:13:16,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:16,501 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:13:16,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f4e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:16, skipping insertion in model container [2021-11-03 04:13:16,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:16,503 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:13:16,505 INFO L168 Benchmark]: Toolchain (without parser) took 797.94 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 61.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:16,507 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 61.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:16,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.58 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 61.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:16,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 61.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 794.58 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 61.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 86]: 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_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:18,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:18,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:18,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:18,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:18,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:18,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:18,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:18,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:18,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:18,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:18,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:18,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:18,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:18,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:18,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:18,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:18,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:18,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:18,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:18,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:18,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:18,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:18,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:18,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:18,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:18,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:18,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:18,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:18,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:18,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:18,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:18,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:18,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:19,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:19,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:19,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:19,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:19,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:19,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:19,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:19,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:13:19,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:19,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:19,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:19,038 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:19,038 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:19,038 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:19,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:19,039 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:19,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:19,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:19,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:13:19,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:13:19,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:19,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:19,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:19,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:19,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:13:19,042 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:13:19,042 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:13:19,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:13:19,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:19,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:19,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:19,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:19,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:13:19,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:19,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:19,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:19,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:19,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:19,045 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:13:19,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:13:19,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:19,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:19,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:19,046 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_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 [2021-11-03 04:13:19,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:19,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:19,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:19,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:19,565 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:19,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2021-11-03 04:13:19,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/7b5e6921f/4cd1ade834c84d3c9a5b3e33b27dc580/FLAG94651f5d0 [2021-11-03 04:13:20,398 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:20,399 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2021-11-03 04:13:20,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/7b5e6921f/4cd1ade834c84d3c9a5b3e33b27dc580/FLAG94651f5d0 [2021-11-03 04:13:20,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/data/7b5e6921f/4cd1ade834c84d3c9a5b3e33b27dc580 [2021-11-03 04:13:20,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:20,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:20,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:20,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:20,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:20,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:20" (1/1) ... [2021-11-03 04:13:20,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d3fb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:20, skipping insertion in model container [2021-11-03 04:13:20,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:20" (1/1) ... [2021-11-03 04:13:20,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:20,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:20,952 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2021-11-03 04:13:21,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:21,441 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:13:21,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:21,477 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2021-11-03 04:13:21,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:21,611 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:21,622 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2021-11-03 04:13:21,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:21,760 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:21,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21 WrapperNode [2021-11-03 04:13:21,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:21,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:21,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:21,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:21,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:21,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:22,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:22,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:22,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:22,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:22,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:22,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:22,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:22,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:23,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:23,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:23,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:23,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:23,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:23,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:23,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:23,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (1/1) ... [2021-11-03 04:13:23,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:23,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:23,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:13:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:13:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:47,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:13:47,090 INFO L299 CfgBuilder]: Removed 2191 assume(true) statements. [2021-11-03 04:13:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:47 BoogieIcfgContainer [2021-11-03 04:13:47,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:13:47,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:13:47,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:13:47,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:13:47,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:20" (1/3) ... [2021-11-03 04:13:47,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f812a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:47, skipping insertion in model container [2021-11-03 04:13:47,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:21" (2/3) ... [2021-11-03 04:13:47,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f812a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:47, skipping insertion in model container [2021-11-03 04:13:47,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:47" (3/3) ... [2021-11-03 04:13:47,111 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2021-11-03 04:13:47,117 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:13:47,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:13:47,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:13:47,211 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:13:47,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:13:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 9596 states, 9585 states have (on average 1.8877412623891496) internal successors, (18094), 9595 states have internal predecessors, (18094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:13:47,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:47,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:47,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:13:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash 81408100, now seen corresponding path program 1 times [2021-11-03 04:13:47,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:47,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397248115] [2021-11-03 04:13:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:47,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:47,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:47,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:13:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:47,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:47,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:48,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:48,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:48,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397248115] [2021-11-03 04:13:48,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397248115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:48,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:48,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:48,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185479208] [2021-11-03 04:13:48,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:48,389 INFO L87 Difference]: Start difference. First operand has 9596 states, 9585 states have (on average 1.8877412623891496) internal successors, (18094), 9595 states have internal predecessors, (18094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:49,899 INFO L93 Difference]: Finished difference Result 32561 states and 61396 transitions. [2021-11-03 04:13:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 04:13:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:50,135 INFO L225 Difference]: With dead ends: 32561 [2021-11-03 04:13:50,135 INFO L226 Difference]: Without dead ends: 22961 [2021-11-03 04:13:50,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22961 states. [2021-11-03 04:13:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22961 to 9588. [2021-11-03 04:13:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9588 states, 9578 states have (on average 1.8734600125287115) internal successors, (17944), 9587 states have internal predecessors, (17944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9588 states to 9588 states and 17944 transitions. [2021-11-03 04:13:50,856 INFO L78 Accepts]: Start accepts. Automaton has 9588 states and 17944 transitions. Word has length 58 [2021-11-03 04:13:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:50,857 INFO L470 AbstractCegarLoop]: Abstraction has 9588 states and 17944 transitions. [2021-11-03 04:13:50,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 9588 states and 17944 transitions. [2021-11-03 04:13:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:13:50,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:50,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:50,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:51,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:51,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:13:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2001973618, now seen corresponding path program 1 times [2021-11-03 04:13:51,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:51,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620497576] [2021-11-03 04:13:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:51,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:51,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:51,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:51,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:13:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:51,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:13:51,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:51,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:52,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:52,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620497576] [2021-11-03 04:13:52,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620497576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:52,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:52,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:13:52,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28155752] [2021-11-03 04:13:52,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:13:52,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:13:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:13:52,019 INFO L87 Difference]: Start difference. First operand 9588 states and 17944 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:56,274 INFO L93 Difference]: Finished difference Result 66497 states and 124439 transitions. [2021-11-03 04:13:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:13:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:13:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:56,457 INFO L225 Difference]: With dead ends: 66497 [2021-11-03 04:13:56,458 INFO L226 Difference]: Without dead ends: 56928 [2021-11-03 04:13:56,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:13:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56928 states. [2021-11-03 04:13:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56928 to 9577. [2021-11-03 04:13:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9577 states, 9567 states have (on average 1.8714330511132016) internal successors, (17904), 9576 states have internal predecessors, (17904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 17904 transitions. [2021-11-03 04:13:57,580 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 17904 transitions. Word has length 60 [2021-11-03 04:13:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:57,581 INFO L470 AbstractCegarLoop]: Abstraction has 9577 states and 17904 transitions. [2021-11-03 04:13:57,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 17904 transitions. [2021-11-03 04:13:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:13:57,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:57,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:57,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:57,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:57,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:13:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash -391551789, now seen corresponding path program 1 times [2021-11-03 04:13:57,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:57,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271363064] [2021-11-03 04:13:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:57,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:57,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:57,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:57,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:13:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:58,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:58,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:58,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:58,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:58,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271363064] [2021-11-03 04:13:58,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271363064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:58,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:58,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:58,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499477228] [2021-11-03 04:13:58,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:58,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:58,691 INFO L87 Difference]: Start difference. First operand 9577 states and 17904 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:00,209 INFO L93 Difference]: Finished difference Result 32409 states and 60614 transitions. [2021-11-03 04:14:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:00,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 04:14:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:00,285 INFO L225 Difference]: With dead ends: 32409 [2021-11-03 04:14:00,285 INFO L226 Difference]: Without dead ends: 22847 [2021-11-03 04:14:00,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22847 states. [2021-11-03 04:14:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22847 to 9573. [2021-11-03 04:14:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9573 states, 9563 states have (on average 1.8706472864163965) internal successors, (17889), 9572 states have internal predecessors, (17889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 17889 transitions. [2021-11-03 04:14:01,054 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 17889 transitions. Word has length 65 [2021-11-03 04:14:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,055 INFO L470 AbstractCegarLoop]: Abstraction has 9573 states and 17889 transitions. [2021-11-03 04:14:01,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 17889 transitions. [2021-11-03 04:14:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:14:01,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,064 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:01,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:01,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1964702059, now seen corresponding path program 1 times [2021-11-03 04:14:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:01,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150432726] [2021-11-03 04:14:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:01,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:01,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:14:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:14:01,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:01,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:02,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150432726] [2021-11-03 04:14:02,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150432726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:02,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:02,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:14:02,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401060865] [2021-11-03 04:14:02,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:14:02,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:14:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:14:02,236 INFO L87 Difference]: Start difference. First operand 9573 states and 17889 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:08,435 INFO L93 Difference]: Finished difference Result 104421 states and 195348 transitions. [2021-11-03 04:14:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:14:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 04:14:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:08,749 INFO L225 Difference]: With dead ends: 104421 [2021-11-03 04:14:08,749 INFO L226 Difference]: Without dead ends: 94868 [2021-11-03 04:14:08,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:14:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94868 states. [2021-11-03 04:14:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94868 to 9586. [2021-11-03 04:14:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9586 states, 9576 states have (on average 1.8689431913116124) internal successors, (17897), 9585 states have internal predecessors, (17897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9586 states to 9586 states and 17897 transitions. [2021-11-03 04:14:09,993 INFO L78 Accepts]: Start accepts. Automaton has 9586 states and 17897 transitions. Word has length 67 [2021-11-03 04:14:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:09,994 INFO L470 AbstractCegarLoop]: Abstraction has 9586 states and 17897 transitions. [2021-11-03 04:14:09,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 9586 states and 17897 transitions. [2021-11-03 04:14:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:14:10,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:10,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:10,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:10,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:10,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1260254660, now seen corresponding path program 1 times [2021-11-03 04:14:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:10,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472585483] [2021-11-03 04:14:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:10,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:10,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:10,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:10,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:14:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:10,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:14:10,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:10,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:11,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:11,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472585483] [2021-11-03 04:14:11,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472585483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:11,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:11,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:14:11,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356277530] [2021-11-03 04:14:11,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:14:11,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:14:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:14:11,207 INFO L87 Difference]: Start difference. First operand 9586 states and 17897 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:13,931 INFO L93 Difference]: Finished difference Result 66483 states and 124319 transitions. [2021-11-03 04:14:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:14:13,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:14:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:14,210 INFO L225 Difference]: With dead ends: 66483 [2021-11-03 04:14:14,211 INFO L226 Difference]: Without dead ends: 56949 [2021-11-03 04:14:14,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:14:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56949 states. [2021-11-03 04:14:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56949 to 9598. [2021-11-03 04:14:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9598 states, 9588 states have (on average 1.8678556528994577) internal successors, (17909), 9597 states have internal predecessors, (17909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9598 states to 9598 states and 17909 transitions. [2021-11-03 04:14:15,309 INFO L78 Accepts]: Start accepts. Automaton has 9598 states and 17909 transitions. Word has length 71 [2021-11-03 04:14:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:15,310 INFO L470 AbstractCegarLoop]: Abstraction has 9598 states and 17909 transitions. [2021-11-03 04:14:15,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 9598 states and 17909 transitions. [2021-11-03 04:14:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:14:15,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:15,318 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:15,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:15,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:15,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:15,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1940774615, now seen corresponding path program 1 times [2021-11-03 04:14:15,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:15,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283125736] [2021-11-03 04:14:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:15,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:15,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:15,543 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:15,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:14:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:16,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:14:16,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:16,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:16,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:16,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283125736] [2021-11-03 04:14:16,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283125736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:16,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:16,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:14:16,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695450414] [2021-11-03 04:14:16,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:14:16,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:14:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:16,393 INFO L87 Difference]: Start difference. First operand 9598 states and 17909 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:16,954 INFO L93 Difference]: Finished difference Result 22938 states and 42850 transitions. [2021-11-03 04:14:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:14:16,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:14:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:16,986 INFO L225 Difference]: With dead ends: 22938 [2021-11-03 04:14:16,986 INFO L226 Difference]: Without dead ends: 13368 [2021-11-03 04:14:17,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:14:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13368 states. [2021-11-03 04:14:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13368 to 9550. [2021-11-03 04:14:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9550 states, 9540 states have (on average 1.868972746331237) internal successors, (17830), 9549 states have internal predecessors, (17830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9550 states to 9550 states and 17830 transitions. [2021-11-03 04:14:17,591 INFO L78 Accepts]: Start accepts. Automaton has 9550 states and 17830 transitions. Word has length 71 [2021-11-03 04:14:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:17,592 INFO L470 AbstractCegarLoop]: Abstraction has 9550 states and 17830 transitions. [2021-11-03 04:14:17,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 9550 states and 17830 transitions. [2021-11-03 04:14:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 04:14:17,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:17,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:17,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:17,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:17,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1504356180, now seen corresponding path program 1 times [2021-11-03 04:14:17,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:17,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029475821] [2021-11-03 04:14:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:17,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:17,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:17,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:17,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:14:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:18,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:14:18,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:18,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:18,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:18,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029475821] [2021-11-03 04:14:18,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029475821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:18,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:18,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:14:18,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758276282] [2021-11-03 04:14:18,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:18,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:18,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:18,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:18,650 INFO L87 Difference]: Start difference. First operand 9550 states and 17830 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:19,265 INFO L93 Difference]: Finished difference Result 22885 states and 42756 transitions. [2021-11-03 04:14:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:14:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 04:14:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:19,285 INFO L225 Difference]: With dead ends: 22885 [2021-11-03 04:14:19,285 INFO L226 Difference]: Without dead ends: 13366 [2021-11-03 04:14:19,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:14:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13366 states. [2021-11-03 04:14:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13366 to 9547. [2021-11-03 04:14:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9547 states, 9537 states have (on average 1.8681975463982385) internal successors, (17817), 9546 states have internal predecessors, (17817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9547 states to 9547 states and 17817 transitions. [2021-11-03 04:14:19,847 INFO L78 Accepts]: Start accepts. Automaton has 9547 states and 17817 transitions. Word has length 72 [2021-11-03 04:14:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:19,847 INFO L470 AbstractCegarLoop]: Abstraction has 9547 states and 17817 transitions. [2021-11-03 04:14:19,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9547 states and 17817 transitions. [2021-11-03 04:14:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:14:19,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:19,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:19,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:20,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:20,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1517928426, now seen corresponding path program 1 times [2021-11-03 04:14:20,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:20,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239347682] [2021-11-03 04:14:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:20,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:20,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:20,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:20,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:14:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:20,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:14:20,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:20,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:20,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:20,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239347682] [2021-11-03 04:14:20,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239347682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:20,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:20,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:14:20,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831477764] [2021-11-03 04:14:20,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:14:20,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:14:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:14:20,976 INFO L87 Difference]: Start difference. First operand 9547 states and 17817 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:23,087 INFO L93 Difference]: Finished difference Result 53367 states and 99739 transitions. [2021-11-03 04:14:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:14:23,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:14:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:23,144 INFO L225 Difference]: With dead ends: 53367 [2021-11-03 04:14:23,145 INFO L226 Difference]: Without dead ends: 43855 [2021-11-03 04:14:23,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:14:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43855 states. [2021-11-03 04:14:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43855 to 9552. [2021-11-03 04:14:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9552 states, 9542 states have (on average 1.8673234122825404) internal successors, (17818), 9551 states have internal predecessors, (17818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 17818 transitions. [2021-11-03 04:14:23,790 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 17818 transitions. Word has length 73 [2021-11-03 04:14:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:23,791 INFO L470 AbstractCegarLoop]: Abstraction has 9552 states and 17818 transitions. [2021-11-03 04:14:23,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 17818 transitions. [2021-11-03 04:14:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:14:23,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:23,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:23,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:24,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:24,025 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:24,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:24,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1284757713, now seen corresponding path program 1 times [2021-11-03 04:14:24,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:24,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460321722] [2021-11-03 04:14:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:24,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:24,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:24,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:14:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:24,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:14:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:24,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:24,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:24,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460321722] [2021-11-03 04:14:24,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460321722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:24,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:24,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:14:24,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288737593] [2021-11-03 04:14:24,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:14:24,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:14:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:14:24,976 INFO L87 Difference]: Start difference. First operand 9552 states and 17818 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:32,767 INFO L93 Difference]: Finished difference Result 33244 states and 61973 transitions. [2021-11-03 04:14:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:14:32,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 04:14:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:32,796 INFO L225 Difference]: With dead ends: 33244 [2021-11-03 04:14:32,796 INFO L226 Difference]: Without dead ends: 23735 [2021-11-03 04:14:32,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:14:32,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2021-11-03 04:14:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 9552. [2021-11-03 04:14:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9552 states, 9542 states have (on average 1.8083211066862293) internal successors, (17255), 9551 states have internal predecessors, (17255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 17255 transitions. [2021-11-03 04:14:33,395 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 17255 transitions. Word has length 74 [2021-11-03 04:14:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:33,396 INFO L470 AbstractCegarLoop]: Abstraction has 9552 states and 17255 transitions. [2021-11-03 04:14:33,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 17255 transitions. [2021-11-03 04:14:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:14:33,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:33,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:33,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:33,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:33,617 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:33,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2005199717, now seen corresponding path program 1 times [2021-11-03 04:14:33,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:33,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687103617] [2021-11-03 04:14:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:33,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:33,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:33,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:33,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:14:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:34,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:14:34,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:34,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:34,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:34,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687103617] [2021-11-03 04:14:34,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687103617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:34,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:34,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:14:34,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35826063] [2021-11-03 04:14:34,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:14:34,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:14:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:14:34,787 INFO L87 Difference]: Start difference. First operand 9552 states and 17255 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:42,042 INFO L93 Difference]: Finished difference Result 45371 states and 82962 transitions. [2021-11-03 04:14:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:14:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 04:14:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:42,090 INFO L225 Difference]: With dead ends: 45371 [2021-11-03 04:14:42,090 INFO L226 Difference]: Without dead ends: 35889 [2021-11-03 04:14:42,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:14:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35889 states. [2021-11-03 04:14:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35889 to 13220. [2021-11-03 04:14:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13220 states, 13210 states have (on average 1.8098410295230887) internal successors, (23908), 13219 states have internal predecessors, (23908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13220 states to 13220 states and 23908 transitions. [2021-11-03 04:14:42,931 INFO L78 Accepts]: Start accepts. Automaton has 13220 states and 23908 transitions. Word has length 82 [2021-11-03 04:14:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:42,932 INFO L470 AbstractCegarLoop]: Abstraction has 13220 states and 23908 transitions. [2021-11-03 04:14:42,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13220 states and 23908 transitions. [2021-11-03 04:14:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:14:42,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:42,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:42,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:43,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:43,150 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1919695678, now seen corresponding path program 1 times [2021-11-03 04:14:43,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:43,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611749750] [2021-11-03 04:14:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:43,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:43,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:43,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:14:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:43,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:43,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:44,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:45,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:45,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611749750] [2021-11-03 04:14:45,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611749750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:45,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:45,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:14:45,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032392350] [2021-11-03 04:14:45,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:14:45,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:14:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:14:45,881 INFO L87 Difference]: Start difference. First operand 13220 states and 23908 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:52,445 INFO L93 Difference]: Finished difference Result 49065 states and 88908 transitions. [2021-11-03 04:14:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:14:52,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 04:14:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:52,499 INFO L225 Difference]: With dead ends: 49065 [2021-11-03 04:14:52,499 INFO L226 Difference]: Without dead ends: 35907 [2021-11-03 04:14:52,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:14:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35907 states. [2021-11-03 04:14:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35907 to 21601. [2021-11-03 04:14:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21601 states, 21591 states have (on average 1.799221898013061) internal successors, (38847), 21600 states have internal predecessors, (38847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21601 states to 21601 states and 38847 transitions. [2021-11-03 04:14:53,867 INFO L78 Accepts]: Start accepts. Automaton has 21601 states and 38847 transitions. Word has length 85 [2021-11-03 04:14:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:53,867 INFO L470 AbstractCegarLoop]: Abstraction has 21601 states and 38847 transitions. [2021-11-03 04:14:53,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 21601 states and 38847 transitions. [2021-11-03 04:14:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:14:53,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:53,871 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:53,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 04:14:54,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:54,071 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:14:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1741621095, now seen corresponding path program 1 times [2021-11-03 04:14:54,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:54,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884890962] [2021-11-03 04:14:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:54,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:54,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:54,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:14:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:54,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:55,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:55,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:55,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884890962] [2021-11-03 04:14:55,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884890962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:55,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:55,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:14:55,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014268161] [2021-11-03 04:14:55,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:14:55,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:55,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:14:55,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:14:55,258 INFO L87 Difference]: Start difference. First operand 21601 states and 38847 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:08,199 INFO L93 Difference]: Finished difference Result 107426 states and 194220 transitions. [2021-11-03 04:15:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:15:08,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 04:15:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:08,322 INFO L225 Difference]: With dead ends: 107426 [2021-11-03 04:15:08,322 INFO L226 Difference]: Without dead ends: 85886 [2021-11-03 04:15:08,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:15:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85886 states. [2021-11-03 04:15:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85886 to 28017. [2021-11-03 04:15:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28017 states, 28007 states have (on average 1.798014782018781) internal successors, (50357), 28016 states have internal predecessors, (50357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28017 states to 28017 states and 50357 transitions. [2021-11-03 04:15:10,678 INFO L78 Accepts]: Start accepts. Automaton has 28017 states and 50357 transitions. Word has length 86 [2021-11-03 04:15:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:10,678 INFO L470 AbstractCegarLoop]: Abstraction has 28017 states and 50357 transitions. [2021-11-03 04:15:10,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 28017 states and 50357 transitions. [2021-11-03 04:15:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 04:15:10,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:10,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:15:10,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:10,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:10,886 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:15:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1757420832, now seen corresponding path program 1 times [2021-11-03 04:15:10,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:10,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661780437] [2021-11-03 04:15:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:10,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:10,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:10,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:15:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:11,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:15:11,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:11,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:12,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:12,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661780437] [2021-11-03 04:15:12,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661780437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:12,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:12,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:15:12,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968462369] [2021-11-03 04:15:12,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:15:12,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:15:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:15:12,067 INFO L87 Difference]: Start difference. First operand 28017 states and 50357 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:24,718 INFO L93 Difference]: Finished difference Result 99136 states and 179913 transitions. [2021-11-03 04:15:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:15:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 04:15:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:24,809 INFO L225 Difference]: With dead ends: 99136 [2021-11-03 04:15:24,809 INFO L226 Difference]: Without dead ends: 71167 [2021-11-03 04:15:24,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:15:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71167 states. [2021-11-03 04:15:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71167 to 44817. [2021-11-03 04:15:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44817 states, 44807 states have (on average 1.7639877697681166) internal successors, (79039), 44816 states have internal predecessors, (79039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44817 states to 44817 states and 79039 transitions. [2021-11-03 04:15:28,001 INFO L78 Accepts]: Start accepts. Automaton has 44817 states and 79039 transitions. Word has length 87 [2021-11-03 04:15:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:28,002 INFO L470 AbstractCegarLoop]: Abstraction has 44817 states and 79039 transitions. [2021-11-03 04:15:28,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 44817 states and 79039 transitions. [2021-11-03 04:15:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 04:15:28,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:28,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:15:28,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:28,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:28,206 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:15:28,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1513650728, now seen corresponding path program 1 times [2021-11-03 04:15:28,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:28,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86791769] [2021-11-03 04:15:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:28,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:28,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:28,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:28,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ee708e-9234-4f5f-b8f0-eb34e97ef858/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:15:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:28,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:15:28,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:29,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:15:29,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:29,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86791769] [2021-11-03 04:15:29,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86791769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:29,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:29,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:15:29,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473207493] [2021-11-03 04:15:29,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:15:29,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:29,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:15:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:15:29,425 INFO L87 Difference]: Start difference. First operand 44817 states and 79039 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)