./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8 --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 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:58:14,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:58:14,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:58:14,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:58:14,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:58:14,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:58:14,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:58:14,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:58:14,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:58:14,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:58:14,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:58:14,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:58:14,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:58:14,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:58:14,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:58:14,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:58:14,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:58:14,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:58:14,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:58:14,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:58:14,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:58:14,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:58:14,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:58:14,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:58:14,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:58:14,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:58:14,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:58:14,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:58:14,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:58:14,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:58:14,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:58:14,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:58:14,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:58:14,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:58:14,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:58:14,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:58:14,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:58:14,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:58:14,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:58:14,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:58:14,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:58:14,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:58:14,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:58:14,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:58:14,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:58:14,411 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:58:14,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:58:14,412 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:58:14,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:58:14,412 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:58:14,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:58:14,413 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:58:14,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:58:14,415 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:58:14,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:58:14,416 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:58:14,416 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:58:14,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:58:14,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:58:14,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:58:14,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:58:14,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:58:14,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:58:14,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:58:14,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:58:14,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:58:14,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:58:14,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:58:14,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:58:14,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:58:14,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:58:14,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:58:14,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:58:14,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:58:14,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:58:14,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:58:14,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:58:14,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:58:14,426 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_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-11-07 00:58:14,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:58:14,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:58:14,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:58:14,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:58:14,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:58:14,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-07 00:58:14,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/409ef0063/791c17d29ba249efa5b364411142c94d/FLAGacb132cf7 [2021-11-07 00:58:15,752 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:58:15,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-07 00:58:15,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/409ef0063/791c17d29ba249efa5b364411142c94d/FLAGacb132cf7 [2021-11-07 00:58:16,241 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/409ef0063/791c17d29ba249efa5b364411142c94d [2021-11-07 00:58:16,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:58:16,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:58:16,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:16,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:58:16,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:58:16,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:16" (1/1) ... [2021-11-07 00:58:16,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4599a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:16, skipping insertion in model container [2021-11-07 00:58:16,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:16" (1/1) ... [2021-11-07 00:58:16,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:58:16,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:58:18,135 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_99060f12-430e-4cd8-b535-f942136e32cf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-07 00:58:18,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:18,295 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) [2021-11-07 00:58:18,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a125ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:18, skipping insertion in model container [2021-11-07 00:58:18,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:18,297 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:58:18,300 INFO L168 Benchmark]: Toolchain (without parser) took 2051.47 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 63.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:58:18,301 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:58:18,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2044.61 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 63.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:58:18,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2044.61 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 63.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5068]: 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_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8 --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 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:58:20,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:58:20,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:58:20,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:58:20,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:58:20,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:58:20,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:58:20,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:58:20,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:58:20,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:58:20,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:58:21,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:58:21,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:58:21,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:58:21,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:58:21,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:58:21,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:58:21,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:58:21,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:58:21,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:58:21,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:58:21,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:58:21,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:58:21,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:58:21,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:58:21,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:58:21,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:58:21,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:58:21,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:58:21,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:58:21,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:58:21,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:58:21,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:58:21,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:58:21,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:58:21,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:58:21,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:58:21,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:58:21,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:58:21,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:58:21,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:58:21,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:58:21,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:58:21,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:58:21,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:58:21,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:58:21,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:58:21,070 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:58:21,071 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:58:21,071 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:58:21,071 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:58:21,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:58:21,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:58:21,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:58:21,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:58:21,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:58:21,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:58:21,073 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:58:21,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:58:21,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:58:21,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:58:21,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:58:21,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:58:21,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:58:21,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:58:21,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:58:21,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:58:21,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:58:21,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:58:21,078 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:58:21,079 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:21,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:58:21,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:58:21,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:58:21,080 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_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-11-07 00:58:21,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:58:21,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:58:21,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:58:21,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:58:21,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:58:21,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-07 00:58:21,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/39a8a45e4/34c9fe8bfe3e4b6091c2a136e6fb2896/FLAG8c40a627a [2021-11-07 00:58:22,744 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:58:22,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-07 00:58:22,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/39a8a45e4/34c9fe8bfe3e4b6091c2a136e6fb2896/FLAG8c40a627a [2021-11-07 00:58:23,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/data/39a8a45e4/34c9fe8bfe3e4b6091c2a136e6fb2896 [2021-11-07 00:58:23,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:58:23,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:58:23,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:23,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:58:23,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:58:23,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:23" (1/1) ... [2021-11-07 00:58:23,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530f88d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:23, skipping insertion in model container [2021-11-07 00:58:23,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:23" (1/1) ... [2021-11-07 00:58:23,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:58:23,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:58:24,901 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_99060f12-430e-4cd8-b535-f942136e32cf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-07 00:58:24,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:25,038 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:58:25,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:58:25,376 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_99060f12-430e-4cd8-b535-f942136e32cf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-07 00:58:25,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:25,471 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:58:25,810 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_99060f12-430e-4cd8-b535-f942136e32cf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-07 00:58:25,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:26,250 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:58:26,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26 WrapperNode [2021-11-07 00:58:26,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:26,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:58:26,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:58:26,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:58:26,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:58:26,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:58:26,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:58:26,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:58:26,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:58:26,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:58:26,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:58:26,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:58:26,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (1/1) ... [2021-11-07 00:58:26,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:58:26,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:58:26,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:58:26,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:58:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:58:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:58:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:58:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:58:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:58:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:58:27,672 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:58:27,744 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:59:28,407 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##522: assume !false; [2021-11-07 00:59:28,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume false; [2021-11-07 00:59:28,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !false; [2021-11-07 00:59:28,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume false; [2021-11-07 00:59:28,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:59:28,427 INFO L299 CfgBuilder]: Removed 647 assume(true) statements. [2021-11-07 00:59:28,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:28 BoogieIcfgContainer [2021-11-07 00:59:28,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:59:28,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:59:28,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:59:28,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:59:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:58:23" (1/3) ... [2021-11-07 00:59:28,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d943c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:28, skipping insertion in model container [2021-11-07 00:59:28,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:26" (2/3) ... [2021-11-07 00:59:28,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d943c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:28, skipping insertion in model container [2021-11-07 00:59:28,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:28" (3/3) ... [2021-11-07 00:59:28,441 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-07 00:59:28,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:59:28,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 00:59:28,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:59:28,518 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 [2021-11-07 00:59:28,520 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 00:59:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 689 states, 674 states have (on average 1.4940652818991098) internal successors, (1007), 688 states have internal predecessors, (1007), 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) [2021-11-07 00:59:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 00:59:28,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:28,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:28,561 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1802578412, now seen corresponding path program 1 times [2021-11-07 00:59:28,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:28,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081462096] [2021-11-07 00:59:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:28,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:28,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:28,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:28,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:59:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:29,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:59:29,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:29,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:29,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081462096] [2021-11-07 00:59:29,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081462096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:29,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:29,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:59:29,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484848663] [2021-11-07 00:59:29,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:59:29,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:59:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:59:29,748 INFO L87 Difference]: Start difference. First operand has 689 states, 674 states have (on average 1.4940652818991098) internal successors, (1007), 688 states have internal predecessors, (1007), 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 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-07 00:59:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:30,064 INFO L93 Difference]: Finished difference Result 2054 states and 3006 transitions. [2021-11-07 00:59:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:59:30,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-11-07 00:59:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:30,093 INFO L225 Difference]: With dead ends: 2054 [2021-11-07 00:59:30,093 INFO L226 Difference]: Without dead ends: 1338 [2021-11-07 00:59:30,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:59:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-07 00:59:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 672. [2021-11-07 00:59:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 658 states have (on average 1.2917933130699089) internal successors, (850), 671 states have internal predecessors, (850), 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) [2021-11-07 00:59:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 850 transitions. [2021-11-07 00:59:30,224 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 850 transitions. Word has length 11 [2021-11-07 00:59:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:30,225 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 850 transitions. [2021-11-07 00:59:30,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-07 00:59:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 850 transitions. [2021-11-07 00:59:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 00:59:30,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:30,227 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:30,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:30,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:30,441 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1859836714, now seen corresponding path program 1 times [2021-11-07 00:59:30,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:30,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595296319] [2021-11-07 00:59:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:30,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:30,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:59:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:31,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:31,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:31,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:31,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:31,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595296319] [2021-11-07 00:59:31,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595296319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:31,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:31,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:59:31,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036778986] [2021-11-07 00:59:31,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:31,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:59:31,500 INFO L87 Difference]: Start difference. First operand 672 states and 850 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-07 00:59:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:31,829 INFO L93 Difference]: Finished difference Result 1975 states and 2507 transitions. [2021-11-07 00:59:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-07 00:59:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:31,877 INFO L225 Difference]: With dead ends: 1975 [2021-11-07 00:59:31,877 INFO L226 Difference]: Without dead ends: 1315 [2021-11-07 00:59:31,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:59:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-11-07 00:59:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1291. [2021-11-07 00:59:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1277 states have (on average 1.2889584964761158) internal successors, (1646), 1290 states have internal predecessors, (1646), 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) [2021-11-07 00:59:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1646 transitions. [2021-11-07 00:59:31,982 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1646 transitions. Word has length 11 [2021-11-07 00:59:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:31,982 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1646 transitions. [2021-11-07 00:59:31,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-07 00:59:31,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1646 transitions. [2021-11-07 00:59:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:59:31,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:31,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:32,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:32,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1820364266, now seen corresponding path program 1 times [2021-11-07 00:59:32,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:32,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518206984] [2021-11-07 00:59:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:32,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:32,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:59:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:32,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:32,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:32,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:33,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:33,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518206984] [2021-11-07 00:59:33,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518206984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:33,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:33,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:59:33,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120692882] [2021-11-07 00:59:33,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:33,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:33,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:59:33,068 INFO L87 Difference]: Start difference. First operand 1291 states and 1646 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 00:59:33,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:33,158 INFO L93 Difference]: Finished difference Result 1291 states and 1646 transitions. [2021-11-07 00:59:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:33,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 00:59:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:33,168 INFO L225 Difference]: With dead ends: 1291 [2021-11-07 00:59:33,168 INFO L226 Difference]: Without dead ends: 1286 [2021-11-07 00:59:33,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:59:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-11-07 00:59:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1283. [2021-11-07 00:59:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1270 states have (on average 1.2858267716535432) internal successors, (1633), 1282 states have internal predecessors, (1633), 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) [2021-11-07 00:59:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1633 transitions. [2021-11-07 00:59:33,267 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1633 transitions. Word has length 12 [2021-11-07 00:59:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:33,268 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1633 transitions. [2021-11-07 00:59:33,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 00:59:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1633 transitions. [2021-11-07 00:59:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 00:59:33,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:33,271 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] [2021-11-07 00:59:33,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:33,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:33,480 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash -965110428, now seen corresponding path program 1 times [2021-11-07 00:59:33,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:33,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809897722] [2021-11-07 00:59:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:33,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:33,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:33,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:33,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:59:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:34,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:34,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:34,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:34,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:34,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809897722] [2021-11-07 00:59:34,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809897722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:34,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:34,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:59:34,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174609789] [2021-11-07 00:59:34,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:59:34,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:34,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:59:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:34,549 INFO L87 Difference]: Start difference. First operand 1283 states and 1633 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:34,855 INFO L93 Difference]: Finished difference Result 3681 states and 4764 transitions. [2021-11-07 00:59:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:59:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 00:59:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:34,870 INFO L225 Difference]: With dead ends: 3681 [2021-11-07 00:59:34,871 INFO L226 Difference]: Without dead ends: 2406 [2021-11-07 00:59:34,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-11-07 00:59:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2398. [2021-11-07 00:59:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2385 states have (on average 1.310691823899371) internal successors, (3126), 2397 states have internal predecessors, (3126), 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) [2021-11-07 00:59:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3126 transitions. [2021-11-07 00:59:35,060 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3126 transitions. Word has length 35 [2021-11-07 00:59:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:35,061 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3126 transitions. [2021-11-07 00:59:35,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3126 transitions. [2021-11-07 00:59:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 00:59:35,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:35,081 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:35,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:35,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:35,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:35,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2056089327, now seen corresponding path program 1 times [2021-11-07 00:59:35,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:35,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36230029] [2021-11-07 00:59:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:35,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:35,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:35,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:35,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:59:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:36,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:59:36,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:36,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:36,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:36,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36230029] [2021-11-07 00:59:36,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36230029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:36,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:36,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:59:36,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424743556] [2021-11-07 00:59:36,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:59:36,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:59:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:59:36,605 INFO L87 Difference]: Start difference. First operand 2398 states and 3126 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:39,137 INFO L93 Difference]: Finished difference Result 4807 states and 6261 transitions. [2021-11-07 00:59:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:59:39,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 00:59:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:39,156 INFO L225 Difference]: With dead ends: 4807 [2021-11-07 00:59:39,156 INFO L226 Difference]: Without dead ends: 2410 [2021-11-07 00:59:39,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:59:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-11-07 00:59:39,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2396. [2021-11-07 00:59:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2383 states have (on average 1.3092740243390684) internal successors, (3120), 2395 states have internal predecessors, (3120), 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) [2021-11-07 00:59:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3120 transitions. [2021-11-07 00:59:39,331 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3120 transitions. Word has length 53 [2021-11-07 00:59:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:39,331 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 3120 transitions. [2021-11-07 00:59:39,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3120 transitions. [2021-11-07 00:59:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 00:59:39,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:39,334 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] [2021-11-07 00:59:39,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:39,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:39,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1050619864, now seen corresponding path program 1 times [2021-11-07 00:59:39,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:39,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11542100] [2021-11-07 00:59:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:39,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:39,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:39,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:59:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:40,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:59:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:40,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:41,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:41,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11542100] [2021-11-07 00:59:41,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11542100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:41,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:41,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:59:41,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172882777] [2021-11-07 00:59:41,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:59:41,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:59:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:59:41,208 INFO L87 Difference]: Start difference. First operand 2396 states and 3120 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2021-11-07 00:59:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:42,866 INFO L93 Difference]: Finished difference Result 7138 states and 9294 transitions. [2021-11-07 00:59:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:59:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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 78 [2021-11-07 00:59:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:42,897 INFO L225 Difference]: With dead ends: 7138 [2021-11-07 00:59:42,897 INFO L226 Difference]: Without dead ends: 4748 [2021-11-07 00:59:42,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:59:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2021-11-07 00:59:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 2399. [2021-11-07 00:59:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2386 states have (on average 1.308466051969824) internal successors, (3122), 2398 states have internal predecessors, (3122), 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) [2021-11-07 00:59:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3122 transitions. [2021-11-07 00:59:43,174 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3122 transitions. Word has length 78 [2021-11-07 00:59:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:43,177 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3122 transitions. [2021-11-07 00:59:43,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2021-11-07 00:59:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3122 transitions. [2021-11-07 00:59:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 00:59:43,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:43,180 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] [2021-11-07 00:59:43,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:43,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:43,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1494520538, now seen corresponding path program 1 times [2021-11-07 00:59:43,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:43,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446058713] [2021-11-07 00:59:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:43,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:43,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:43,401 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:43,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:59:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:44,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:59:44,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:44,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:44,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:44,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446058713] [2021-11-07 00:59:44,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446058713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:44,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:44,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:59:44,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153148756] [2021-11-07 00:59:44,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:59:44,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:59:44,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:59:44,903 INFO L87 Difference]: Start difference. First operand 2399 states and 3122 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2021-11-07 00:59:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:46,048 INFO L93 Difference]: Finished difference Result 6982 states and 9092 transitions. [2021-11-07 00:59:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:59:46,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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 78 [2021-11-07 00:59:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:46,080 INFO L225 Difference]: With dead ends: 6982 [2021-11-07 00:59:46,080 INFO L226 Difference]: Without dead ends: 4592 [2021-11-07 00:59:46,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:59:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2021-11-07 00:59:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 2411. [2021-11-07 00:59:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2398 states have (on average 1.3069224353628024) internal successors, (3134), 2410 states have internal predecessors, (3134), 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) [2021-11-07 00:59:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3134 transitions. [2021-11-07 00:59:46,374 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3134 transitions. Word has length 78 [2021-11-07 00:59:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:46,375 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 3134 transitions. [2021-11-07 00:59:46,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2021-11-07 00:59:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3134 transitions. [2021-11-07 00:59:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 00:59:46,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:46,378 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] [2021-11-07 00:59:46,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:46,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:46,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 00:59:46,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1517152792, now seen corresponding path program 1 times [2021-11-07 00:59:46,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:46,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445817678] [2021-11-07 00:59:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:46,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:46,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:46,605 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:46,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:59:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:47,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 00:59:47,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:47,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 00:59:47,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 00:59:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:47,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:48,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:48,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445817678] [2021-11-07 00:59:48,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445817678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:48,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:48,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:59:48,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044158218] [2021-11-07 00:59:48,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:59:48,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:59:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:59:48,317 INFO L87 Difference]: Start difference. First operand 2411 states and 3134 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:37,392 INFO L93 Difference]: Finished difference Result 4732 states and 6161 transitions. [2021-11-07 01:02:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:02:37,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 01:02:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:37,416 INFO L225 Difference]: With dead ends: 4732 [2021-11-07 01:02:37,416 INFO L226 Difference]: Without dead ends: 4670 [2021-11-07 01:02:37,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-11-07 01:02:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 2411. [2021-11-07 01:02:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2398 states have (on average 1.3060884070058383) internal successors, (3132), 2410 states have internal predecessors, (3132), 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) [2021-11-07 01:02:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3132 transitions. [2021-11-07 01:02:37,669 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3132 transitions. Word has length 78 [2021-11-07 01:02:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:37,670 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 3132 transitions. [2021-11-07 01:02:37,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3132 transitions. [2021-11-07 01:02:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:02:37,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:37,672 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] [2021-11-07 01:02:37,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:37,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:37,885 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:02:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 948357624, now seen corresponding path program 1 times [2021-11-07 01:02:37,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:37,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918139090] [2021-11-07 01:02:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:37,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:37,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:37,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:02:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:38,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:02:38,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:39,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:39,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:39,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918139090] [2021-11-07 01:02:39,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918139090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:39,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:39,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:02:39,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712195776] [2021-11-07 01:02:39,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:02:39,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:39,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:02:39,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:02:39,747 INFO L87 Difference]: Start difference. First operand 2411 states and 3132 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-07 01:02:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:45,359 INFO L93 Difference]: Finished difference Result 9667 states and 12640 transitions. [2021-11-07 01:02:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:02:45,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 79 [2021-11-07 01:02:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:45,404 INFO L225 Difference]: With dead ends: 9667 [2021-11-07 01:02:45,405 INFO L226 Difference]: Without dead ends: 8419 [2021-11-07 01:02:45,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:02:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-11-07 01:02:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 7045. [2021-11-07 01:02:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 7032 states have (on average 1.3111490329920363) internal successors, (9220), 7044 states have internal predecessors, (9220), 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) [2021-11-07 01:02:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9220 transitions. [2021-11-07 01:02:46,367 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9220 transitions. Word has length 79 [2021-11-07 01:02:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:46,369 INFO L470 AbstractCegarLoop]: Abstraction has 7045 states and 9220 transitions. [2021-11-07 01:02:46,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-07 01:02:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9220 transitions. [2021-11-07 01:02:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:02:46,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:46,379 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] [2021-11-07 01:02:46,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:46,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:46,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:02:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1167030794, now seen corresponding path program 1 times [2021-11-07 01:02:46,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:46,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521734071] [2021-11-07 01:02:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:46,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:46,595 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:46,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:02:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:47,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:02:47,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:47,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:48,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:48,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521734071] [2021-11-07 01:02:48,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521734071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:48,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:48,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:02:48,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586568914] [2021-11-07 01:02:48,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:02:48,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:02:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:48,214 INFO L87 Difference]: Start difference. First operand 7045 states and 9220 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-11-07 01:02:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:50,215 INFO L93 Difference]: Finished difference Result 23094 states and 30270 transitions. [2021-11-07 01:02:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:02:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2021-11-07 01:02:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:50,254 INFO L225 Difference]: With dead ends: 23094 [2021-11-07 01:02:50,255 INFO L226 Difference]: Without dead ends: 16058 [2021-11-07 01:02:50,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:02:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16058 states. [2021-11-07 01:02:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16058 to 7045. [2021-11-07 01:02:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 7032 states have (on average 1.30773606370876) internal successors, (9196), 7044 states have internal predecessors, (9196), 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) [2021-11-07 01:02:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9196 transitions. [2021-11-07 01:02:51,112 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9196 transitions. Word has length 79 [2021-11-07 01:02:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:51,113 INFO L470 AbstractCegarLoop]: Abstraction has 7045 states and 9196 transitions. [2021-11-07 01:02:51,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-11-07 01:02:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9196 transitions. [2021-11-07 01:02:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:02:51,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:51,115 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] [2021-11-07 01:02:51,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:51,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:51,332 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:02:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash -648257224, now seen corresponding path program 1 times [2021-11-07 01:02:51,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:51,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670657688] [2021-11-07 01:02:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:51,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:51,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:51,339 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:51,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:02:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:02:52,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:52,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:02:53,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:53,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670657688] [2021-11-07 01:02:53,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670657688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:53,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:53,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 01:02:53,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802730127] [2021-11-07 01:02:53,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:02:53,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:02:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:02:53,560 INFO L87 Difference]: Start difference. First operand 7045 states and 9196 transitions. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 11 states have internal predecessors, (157), 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) [2021-11-07 01:03:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:04,033 INFO L93 Difference]: Finished difference Result 36777 states and 48158 transitions. [2021-11-07 01:03:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:03:04,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 11 states have internal predecessors, (157), 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 79 [2021-11-07 01:03:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:04,118 INFO L225 Difference]: With dead ends: 36777 [2021-11-07 01:03:04,118 INFO L226 Difference]: Without dead ends: 33220 [2021-11-07 01:03:04,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:03:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33220 states. [2021-11-07 01:03:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33220 to 17401. [2021-11-07 01:03:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17401 states, 17388 states have (on average 1.3103289625028756) internal successors, (22784), 17400 states have internal predecessors, (22784), 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) [2021-11-07 01:03:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17401 states to 17401 states and 22784 transitions. [2021-11-07 01:03:05,920 INFO L78 Accepts]: Start accepts. Automaton has 17401 states and 22784 transitions. Word has length 79 [2021-11-07 01:03:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:05,920 INFO L470 AbstractCegarLoop]: Abstraction has 17401 states and 22784 transitions. [2021-11-07 01:03:05,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 11 states have internal predecessors, (157), 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) [2021-11-07 01:03:05,920 INFO L276 IsEmpty]: Start isEmpty. Operand 17401 states and 22784 transitions. [2021-11-07 01:03:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:03:05,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:05,922 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] [2021-11-07 01:03:05,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:06,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:06,135 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:03:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1804226248, now seen corresponding path program 1 times [2021-11-07 01:03:06,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:06,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178508810] [2021-11-07 01:03:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:06,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:06,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:06,138 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:06,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:03:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:10,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:03:10,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:10,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:03:10,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:03:11,190 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:03:11,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:03:11,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:03:11,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:03:11,397 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:03:11,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:03:11,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:03:11,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:03:11,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-11-07 01:03:11,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-07 01:03:11,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2021-11-07 01:03:11,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2021-11-07 01:03:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:11,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:12,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:12,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178508810] [2021-11-07 01:03:12,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178508810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:12,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:12,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:03:12,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090232853] [2021-11-07 01:03:12,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:03:12,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:03:12,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:03:12,424 INFO L87 Difference]: Start difference. First operand 17401 states and 22784 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-11-07 01:05:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:02,254 INFO L93 Difference]: Finished difference Result 43355 states and 56710 transitions. [2021-11-07 01:05:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:05:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2021-11-07 01:05:02,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:02,313 INFO L225 Difference]: With dead ends: 43355 [2021-11-07 01:05:02,314 INFO L226 Difference]: Without dead ends: 25443 [2021-11-07 01:05:02,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:05:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25443 states. [2021-11-07 01:05:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25443 to 11503. [2021-11-07 01:05:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11503 states, 11490 states have (on average 1.306875543951262) internal successors, (15016), 11502 states have internal predecessors, (15016), 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) [2021-11-07 01:05:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11503 states to 11503 states and 15016 transitions. [2021-11-07 01:05:03,923 INFO L78 Accepts]: Start accepts. Automaton has 11503 states and 15016 transitions. Word has length 79 [2021-11-07 01:05:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:03,924 INFO L470 AbstractCegarLoop]: Abstraction has 11503 states and 15016 transitions. [2021-11-07 01:05:03,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-11-07 01:05:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 11503 states and 15016 transitions. [2021-11-07 01:05:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:05:03,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:03,926 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] [2021-11-07 01:05:03,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:04,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:04,126 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:05:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash 559162765, now seen corresponding path program 1 times [2021-11-07 01:05:04,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:04,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746730124] [2021-11-07 01:05:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:04,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:04,132 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:05:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:05,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:05:05,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:05,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 01:05:05,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 01:05:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:05,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:06,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:06,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746730124] [2021-11-07 01:05:06,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746730124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:06,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:06,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:05:06,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130289861] [2021-11-07 01:05:06,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:05:06,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:05:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:05:06,282 INFO L87 Difference]: Start difference. First operand 11503 states and 15016 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2021-11-07 01:08:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:39,382 INFO L93 Difference]: Finished difference Result 22633 states and 29572 transitions. [2021-11-07 01:08:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:08:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 [2021-11-07 01:08:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:39,425 INFO L225 Difference]: With dead ends: 22633 [2021-11-07 01:08:39,425 INFO L226 Difference]: Without dead ends: 22486 [2021-11-07 01:08:39,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:08:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22486 states. [2021-11-07 01:08:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22486 to 11508. [2021-11-07 01:08:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11508 states, 11495 states have (on average 1.3059591126576773) internal successors, (15012), 11507 states have internal predecessors, (15012), 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) [2021-11-07 01:08:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11508 states to 11508 states and 15012 transitions. [2021-11-07 01:08:40,888 INFO L78 Accepts]: Start accepts. Automaton has 11508 states and 15012 transitions. Word has length 85 [2021-11-07 01:08:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:40,888 INFO L470 AbstractCegarLoop]: Abstraction has 11508 states and 15012 transitions. [2021-11-07 01:08:40,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2021-11-07 01:08:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 11508 states and 15012 transitions. [2021-11-07 01:08:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:08:40,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:40,891 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] [2021-11-07 01:08:40,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:41,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:41,116 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:08:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:41,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1810418226, now seen corresponding path program 1 times [2021-11-07 01:08:41,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:41,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130008877] [2021-11-07 01:08:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:41,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:41,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:41,118 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:41,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:08:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:44,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:08:44,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:44,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:08:44,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:08:45,086 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:08:45,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:08:45,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:08:45,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:08:45,305 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:08:45,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:08:45,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:08:45,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:08:45,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 01:08:45,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 01:08:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:45,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:46,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:46,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130008877] [2021-11-07 01:08:46,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130008877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:46,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:46,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:08:46,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305791083] [2021-11-07 01:08:46,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:08:46,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:08:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:08:46,007 INFO L87 Difference]: Start difference. First operand 11508 states and 15012 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2021-11-07 01:10:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:34,872 INFO L93 Difference]: Finished difference Result 31957 states and 41687 transitions. [2021-11-07 01:10:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:10:34,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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 [2021-11-07 01:10:34,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:34,895 INFO L225 Difference]: With dead ends: 31957 [2021-11-07 01:10:34,895 INFO L226 Difference]: Without dead ends: 20223 [2021-11-07 01:10:34,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:10:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20223 states. [2021-11-07 01:10:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20223 to 10694. [2021-11-07 01:10:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10694 states, 10681 states have (on average 1.3048403707518024) internal successors, (13937), 10693 states have internal predecessors, (13937), 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) [2021-11-07 01:10:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 13937 transitions. [2021-11-07 01:10:36,151 INFO L78 Accepts]: Start accepts. Automaton has 10694 states and 13937 transitions. Word has length 86 [2021-11-07 01:10:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:36,151 INFO L470 AbstractCegarLoop]: Abstraction has 10694 states and 13937 transitions. [2021-11-07 01:10:36,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2021-11-07 01:10:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10694 states and 13937 transitions. [2021-11-07 01:10:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 01:10:36,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:36,154 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, 1, 1, 1] [2021-11-07 01:10:36,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:36,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:36,376 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:36,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash -642776665, now seen corresponding path program 1 times [2021-11-07 01:10:36,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:36,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378173542] [2021-11-07 01:10:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:36,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:36,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:36,378 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:36,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99060f12-430e-4cd8-b535-f942136e32cf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:10:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:10:37,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:38,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 01:10:38,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 01:10:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:38,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:38,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:38,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378173542] [2021-11-07 01:10:38,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378173542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:38,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:38,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:10:38,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284747521] [2021-11-07 01:10:38,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:10:38,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:38,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:10:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:10:38,651 INFO L87 Difference]: Start difference. First operand 10694 states and 13937 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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)