./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:09:55,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:09:55,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:09:55,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:09:55,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:09:55,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:09:55,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:09:55,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:09:55,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:09:55,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:09:55,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:09:55,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:09:55,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:09:55,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:09:55,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:09:55,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:09:55,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:09:55,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:09:55,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:09:55,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:09:55,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:09:55,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:09:55,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:09:55,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:09:55,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:09:55,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:09:55,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:09:55,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:09:55,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:09:55,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:09:55,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:09:55,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:09:55,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:09:55,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:09:55,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:09:55,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:09:55,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:09:55,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:09:55,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:09:55,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:09:55,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:09:55,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:09:55,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:09:55,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:09:55,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:09:55,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:09:55,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:09:55,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:09:55,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:09:55,461 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:09:55,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:09:55,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:09:55,469 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:09:55,469 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:09:55,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:09:55,470 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:09:55,470 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:09:55,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:09:55,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:09:55,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:09:55,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:09:55,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:09:55,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:09:55,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:09:55,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:09:55,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:09:55,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:09:55,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:09:55,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:09:55,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:09:55,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:09:55,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:09:55,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:09:55,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:09:55,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:09:55,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:09:55,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:09:55,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:09:55,476 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_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-03 04:09:55,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:09:55,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:09:55,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:09:55,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:09:55,803 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:09:55,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-03 04:09:55,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/792933ae9/044953e9fd824727bcd34b60149f9d5b/FLAG7a3488559 [2021-11-03 04:09:56,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:09:56,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-03 04:09:56,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/792933ae9/044953e9fd824727bcd34b60149f9d5b/FLAG7a3488559 [2021-11-03 04:09:57,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/792933ae9/044953e9fd824727bcd34b60149f9d5b [2021-11-03 04:09:57,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:09:57,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:09:57,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:57,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:09:57,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:09:57,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:57" (1/1) ... [2021-11-03 04:09:57,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40efc441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:57, skipping insertion in model container [2021-11-03 04:09:57,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:57" (1/1) ... [2021-11-03 04:09:57,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:09:57,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:58,690 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_79d9966d-8c02-4816-bca8-b9bd373eba20/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-03 04:09:58,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:58,875 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:09:58,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29ba7772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:58, skipping insertion in model container [2021-11-03 04:09:58,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:58,877 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:09:58,881 INFO L168 Benchmark]: Toolchain (without parser) took 1610.40 ms. Allocated memory was 125.8 MB in the beginning and 176.2 MB in the end (delta: 50.3 MB). Free memory was 78.1 MB in the beginning and 134.6 MB in the end (delta: -56.5 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:09:58,882 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 102.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:09:58,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1607.09 ms. Allocated memory was 125.8 MB in the beginning and 176.2 MB in the end (delta: 50.3 MB). Free memory was 77.8 MB in the beginning and 134.6 MB in the end (delta: -56.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:09:58,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 102.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1607.09 ms. Allocated memory was 125.8 MB in the beginning and 176.2 MB in the end (delta: 50.3 MB). Free memory was 77.8 MB in the beginning and 134.6 MB in the end (delta: -56.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5135]: 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_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:10:01,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:10:01,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:10:01,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:10:01,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:10:01,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:10:01,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:10:01,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:10:01,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:10:01,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:10:01,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:10:01,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:10:01,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:10:01,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:10:01,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:10:01,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:10:01,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:10:01,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:10:01,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:10:01,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:10:01,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:10:01,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:10:01,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:10:01,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:10:01,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:10:01,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:10:01,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:10:01,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:10:01,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:10:01,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:10:01,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:10:01,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:10:01,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:10:01,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:10:01,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:10:01,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:10:01,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:10:01,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:10:01,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:10:01,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:10:01,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:10:01,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:10:01,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:10:01,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:10:01,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:10:01,264 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:10:01,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:10:01,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:10:01,268 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:10:01,268 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:10:01,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:10:01,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:10:01,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:10:01,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:10:01,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:10:01,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:10:01,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:10:01,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:10:01,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:10:01,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:10:01,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:10:01,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:10:01,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:10:01,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:10:01,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:10:01,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:01,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:10:01,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:10:01,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:10:01,276 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:10:01,277 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:10:01,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:10:01,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:10:01,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:10:01,278 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_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-03 04:10:01,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:10:01,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:10:01,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:10:01,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:10:01,710 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:10:01,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-03 04:10:01,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/e7200160d/6858584945e2466e878eb259b988ecad/FLAG48f26e2a8 [2021-11-03 04:10:02,709 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:10:02,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-03 04:10:02,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/e7200160d/6858584945e2466e878eb259b988ecad/FLAG48f26e2a8 [2021-11-03 04:10:03,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/data/e7200160d/6858584945e2466e878eb259b988ecad [2021-11-03 04:10:03,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:10:03,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:10:03,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:03,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:10:03,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:10:03,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:03" (1/1) ... [2021-11-03 04:10:03,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1b9a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:03, skipping insertion in model container [2021-11-03 04:10:03,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:03" (1/1) ... [2021-11-03 04:10:03,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:10:03,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:10:04,771 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_79d9966d-8c02-4816-bca8-b9bd373eba20/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-03 04:10:04,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:04,882 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:10:04,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:10:05,202 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_79d9966d-8c02-4816-bca8-b9bd373eba20/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-03 04:10:05,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:05,251 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:10:05,592 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_79d9966d-8c02-4816-bca8-b9bd373eba20/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-03 04:10:05,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:05,817 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:10:05,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05 WrapperNode [2021-11-03 04:10:05,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:05,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:05,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:10:05,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:10:05,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:05,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:06,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:10:06,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:10:06,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:10:06,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:10:06,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:10:06,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:10:06,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:10:06,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (1/1) ... [2021-11-03 04:10:06,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:06,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:10:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:10:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:10:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:10:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 04:10:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:10:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:10:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:10:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:10:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:10:06,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:10:06,740 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 04:10:39,265 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-03 04:10:39,265 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-03 04:10:39,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:10:39,284 INFO L299 CfgBuilder]: Removed 434 assume(true) statements. [2021-11-03 04:10:39,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:39 BoogieIcfgContainer [2021-11-03 04:10:39,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:10:39,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:10:39,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:10:39,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:10:39,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:10:03" (1/3) ... [2021-11-03 04:10:39,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2b0676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:39, skipping insertion in model container [2021-11-03 04:10:39,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:05" (2/3) ... [2021-11-03 04:10:39,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2b0676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:39, skipping insertion in model container [2021-11-03 04:10:39,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:39" (3/3) ... [2021-11-03 04:10:39,301 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-03 04:10:39,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:10:39,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 04:10:39,371 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:10:39,378 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:10:39,378 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 04:10:39,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 409 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:10:39,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:39,409 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:39,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1465825715, now seen corresponding path program 1 times [2021-11-03 04:10:39,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:39,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403412359] [2021-11-03 04:10:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:39,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:39,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:39,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:39,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:10:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:40,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:10:40,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:40,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:40,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:40,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403412359] [2021-11-03 04:10:40,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403412359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:40,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:40,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:10:40,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656960736] [2021-11-03 04:10:40,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:10:40,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:10:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:10:40,620 INFO L87 Difference]: Start difference. First operand has 410 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 409 states have internal predecessors, (598), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:40,999 INFO L93 Difference]: Finished difference Result 1189 states and 1749 transitions. [2021-11-03 04:10:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:10:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-03 04:10:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:41,026 INFO L225 Difference]: With dead ends: 1189 [2021-11-03 04:10:41,027 INFO L226 Difference]: Without dead ends: 765 [2021-11-03 04:10:41,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:10:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-03 04:10:41,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 747. [2021-11-03 04:10:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 736 states have (on average 1.327445652173913) internal successors, (977), 746 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 977 transitions. [2021-11-03 04:10:41,167 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 977 transitions. Word has length 10 [2021-11-03 04:10:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:41,168 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 977 transitions. [2021-11-03 04:10:41,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 977 transitions. [2021-11-03 04:10:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:10:41,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:41,171 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:41,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:41,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:41,378 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1804042980, now seen corresponding path program 1 times [2021-11-03 04:10:41,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:41,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002769199] [2021-11-03 04:10:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:41,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:41,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:41,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:41,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:10:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:41,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:10:41,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:42,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:42,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:42,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002769199] [2021-11-03 04:10:42,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002769199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:42,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:42,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:10:42,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597903254] [2021-11-03 04:10:42,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:10:42,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:42,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:10:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:10:42,267 INFO L87 Difference]: Start difference. First operand 747 states and 977 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) [2021-11-03 04:10:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:42,437 INFO L93 Difference]: Finished difference Result 2217 states and 2904 transitions. [2021-11-03 04:10:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:10:42,438 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 [2021-11-03 04:10:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:42,448 INFO L225 Difference]: With dead ends: 2217 [2021-11-03 04:10:42,448 INFO L226 Difference]: Without dead ends: 1475 [2021-11-03 04:10:42,454 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 [2021-11-03 04:10:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-11-03 04:10:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1446. [2021-11-03 04:10:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1435 states have (on average 1.3261324041811846) internal successors, (1903), 1445 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1903 transitions. [2021-11-03 04:10:42,547 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1903 transitions. Word has length 11 [2021-11-03 04:10:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:42,548 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1903 transitions. [2021-11-03 04:10:42,548 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) [2021-11-03 04:10:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1903 transitions. [2021-11-03 04:10:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:10:42,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:42,553 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] [2021-11-03 04:10:42,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:42,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:42,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 739890622, now seen corresponding path program 1 times [2021-11-03 04:10:42,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:42,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858995979] [2021-11-03 04:10:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:42,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:42,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:42,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:10:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:43,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:10:43,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:43,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:44,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:44,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858995979] [2021-11-03 04:10:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858995979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:44,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:44,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:10:44,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751417331] [2021-11-03 04:10:44,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:44,036 INFO L87 Difference]: Start difference. First operand 1446 states and 1903 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:44,203 INFO L93 Difference]: Finished difference Result 2886 states and 3799 transitions. [2021-11-03 04:10:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:10:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2021-11-03 04:10:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:44,213 INFO L225 Difference]: With dead ends: 2886 [2021-11-03 04:10:44,213 INFO L226 Difference]: Without dead ends: 1446 [2021-11-03 04:10:44,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:10:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-11-03 04:10:44,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2021-11-03 04:10:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1435 states have (on average 1.3254355400696864) internal successors, (1902), 1445 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1902 transitions. [2021-11-03 04:10:44,300 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1902 transitions. Word has length 38 [2021-11-03 04:10:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:44,300 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1902 transitions. [2021-11-03 04:10:44,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1902 transitions. [2021-11-03 04:10:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:10:44,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:44,308 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] [2021-11-03 04:10:44,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:44,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:44,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 667504064, now seen corresponding path program 1 times [2021-11-03 04:10:44,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:44,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707292979] [2021-11-03 04:10:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:44,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:44,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:44,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:10:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:45,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:10:45,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:45,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:45,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:45,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707292979] [2021-11-03 04:10:45,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707292979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:45,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:45,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:10:45,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493724352] [2021-11-03 04:10:45,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:45,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:45,895 INFO L87 Difference]: Start difference. First operand 1446 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:46,191 INFO L93 Difference]: Finished difference Result 4964 states and 6618 transitions. [2021-11-03 04:10:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:10:46,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-03 04:10:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:46,217 INFO L225 Difference]: With dead ends: 4964 [2021-11-03 04:10:46,217 INFO L226 Difference]: Without dead ends: 3525 [2021-11-03 04:10:46,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-11-03 04:10:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3461. [2021-11-03 04:10:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3461 states, 3450 states have (on average 1.3504347826086958) internal successors, (4659), 3460 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4659 transitions. [2021-11-03 04:10:46,436 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4659 transitions. Word has length 38 [2021-11-03 04:10:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:46,437 INFO L470 AbstractCegarLoop]: Abstraction has 3461 states and 4659 transitions. [2021-11-03 04:10:46,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4659 transitions. [2021-11-03 04:10:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:10:46,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:46,446 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:46,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:46,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:46,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1703756643, now seen corresponding path program 1 times [2021-11-03 04:10:46,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:46,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175471237] [2021-11-03 04:10:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:46,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:46,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:46,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:10:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:47,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:10:47,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:47,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:48,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:48,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175471237] [2021-11-03 04:10:48,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175471237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:48,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:48,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:10:48,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568281454] [2021-11-03 04:10:48,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:10:48,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:10:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:10:48,076 INFO L87 Difference]: Start difference. First operand 3461 states and 4659 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:48,830 INFO L93 Difference]: Finished difference Result 13736 states and 18468 transitions. [2021-11-03 04:10:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:48,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 04:10:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:48,906 INFO L225 Difference]: With dead ends: 13736 [2021-11-03 04:10:48,907 INFO L226 Difference]: Without dead ends: 10283 [2021-11-03 04:10:48,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2021-11-03 04:10:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 3485. [2021-11-03 04:10:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3474 states have (on average 1.348013816925734) internal successors, (4683), 3484 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4683 transitions. [2021-11-03 04:10:49,320 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4683 transitions. Word has length 41 [2021-11-03 04:10:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:49,321 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 4683 transitions. [2021-11-03 04:10:49,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4683 transitions. [2021-11-03 04:10:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:10:49,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:49,323 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:49,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:49,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:49,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1337408933, now seen corresponding path program 1 times [2021-11-03 04:10:49,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:49,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295736178] [2021-11-03 04:10:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:49,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:49,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:49,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:10:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:50,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:10:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:50,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:50,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:50,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295736178] [2021-11-03 04:10:50,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295736178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:50,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:10:50,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700849661] [2021-11-03 04:10:50,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:10:50,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:10:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:10:50,717 INFO L87 Difference]: Start difference. First operand 3485 states and 4683 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:51,594 INFO L93 Difference]: Finished difference Result 11840 states and 15908 transitions. [2021-11-03 04:10:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:51,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 42 [2021-11-03 04:10:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:51,679 INFO L225 Difference]: With dead ends: 11840 [2021-11-03 04:10:51,679 INFO L226 Difference]: Without dead ends: 8363 [2021-11-03 04:10:51,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2021-11-03 04:10:52,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 3509. [2021-11-03 04:10:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3498 states have (on average 1.3456260720411664) internal successors, (4707), 3508 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4707 transitions. [2021-11-03 04:10:52,097 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4707 transitions. Word has length 42 [2021-11-03 04:10:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:52,099 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4707 transitions. [2021-11-03 04:10:52,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4707 transitions. [2021-11-03 04:10:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:10:52,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:52,101 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:52,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:52,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:52,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -283318246, now seen corresponding path program 1 times [2021-11-03 04:10:52,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:52,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232429851] [2021-11-03 04:10:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:52,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:52,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:52,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:10:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:53,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:10:53,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:53,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:53,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:53,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232429851] [2021-11-03 04:10:53,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232429851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:53,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:53,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:10:53,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314834689] [2021-11-03 04:10:53,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:10:53,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:10:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:10:53,785 INFO L87 Difference]: Start difference. First operand 3509 states and 4707 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:56,514 INFO L93 Difference]: Finished difference Result 19088 states and 25593 transitions. [2021-11-03 04:10:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:10:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2021-11-03 04:10:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:56,563 INFO L225 Difference]: With dead ends: 19088 [2021-11-03 04:10:56,563 INFO L226 Difference]: Without dead ends: 17298 [2021-11-03 04:10:56,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:10:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2021-11-03 04:10:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 3593. [2021-11-03 04:10:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3582 states have (on average 1.3375209380234505) internal successors, (4791), 3592 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4791 transitions. [2021-11-03 04:10:57,200 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4791 transitions. Word has length 42 [2021-11-03 04:10:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:57,201 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 4791 transitions. [2021-11-03 04:10:57,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4791 transitions. [2021-11-03 04:10:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:10:57,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:57,204 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:57,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:57,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:57,426 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:10:57,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1871666148, now seen corresponding path program 1 times [2021-11-03 04:10:57,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:57,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334972005] [2021-11-03 04:10:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:57,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:57,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:57,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:10:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:58,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:10:58,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:58,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:58,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:58,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334972005] [2021-11-03 04:10:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334972005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:58,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:58,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 04:10:58,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543107304] [2021-11-03 04:10:58,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:10:58,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:10:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:10:58,728 INFO L87 Difference]: Start difference. First operand 3593 states and 4791 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:16,044 INFO L93 Difference]: Finished difference Result 27795 states and 37313 transitions. [2021-11-03 04:11:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:11:16,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-11-03 04:11:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:16,109 INFO L225 Difference]: With dead ends: 27795 [2021-11-03 04:11:16,109 INFO L226 Difference]: Without dead ends: 24210 [2021-11-03 04:11:16,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:11:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24210 states. [2021-11-03 04:11:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24210 to 3563. [2021-11-03 04:11:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3552 states have (on average 1.3324887387387387) internal successors, (4733), 3562 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4733 transitions. [2021-11-03 04:11:16,759 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4733 transitions. Word has length 42 [2021-11-03 04:11:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:16,759 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4733 transitions. [2021-11-03 04:11:16,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4733 transitions. [2021-11-03 04:11:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:11:16,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:16,761 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] [2021-11-03 04:11:16,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:16,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:16,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:11:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 567062686, now seen corresponding path program 1 times [2021-11-03 04:11:16,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:16,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816910759] [2021-11-03 04:11:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:16,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:16,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:16,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:11:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:11:17,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:17,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:18,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:18,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816910759] [2021-11-03 04:11:18,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816910759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:18,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:18,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:11:18,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175749442] [2021-11-03 04:11:18,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:11:18,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:18,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:11:18,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:18,116 INFO L87 Difference]: Start difference. First operand 3563 states and 4733 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:21,653 INFO L93 Difference]: Finished difference Result 12089 states and 16109 transitions. [2021-11-03 04:11:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:11:21,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 04:11:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:21,678 INFO L225 Difference]: With dead ends: 12089 [2021-11-03 04:11:21,678 INFO L226 Difference]: Without dead ends: 8534 [2021-11-03 04:11:21,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:11:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2021-11-03 04:11:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 3171. [2021-11-03 04:11:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3160 states have (on average 1.32626582278481) internal successors, (4191), 3170 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4191 transitions. [2021-11-03 04:11:22,259 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4191 transitions. Word has length 44 [2021-11-03 04:11:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:22,259 INFO L470 AbstractCegarLoop]: Abstraction has 3171 states and 4191 transitions. [2021-11-03 04:11:22,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4191 transitions. [2021-11-03 04:11:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:11:22,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:22,261 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] [2021-11-03 04:11:22,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:22,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:22,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:11:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2142949410, now seen corresponding path program 1 times [2021-11-03 04:11:22,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:22,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141498714] [2021-11-03 04:11:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:22,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:22,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:22,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:11:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:23,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:11:23,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:23,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:24,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:24,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141498714] [2021-11-03 04:11:24,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141498714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:24,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:24,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:11:24,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932877595] [2021-11-03 04:11:24,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:11:24,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:11:24,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:11:24,316 INFO L87 Difference]: Start difference. First operand 3171 states and 4191 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:28,827 INFO L93 Difference]: Finished difference Result 13252 states and 17567 transitions. [2021-11-03 04:11:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:11:28,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 04:11:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:28,855 INFO L225 Difference]: With dead ends: 13252 [2021-11-03 04:11:28,855 INFO L226 Difference]: Without dead ends: 11405 [2021-11-03 04:11:28,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:11:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11405 states. [2021-11-03 04:11:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11405 to 9847. [2021-11-03 04:11:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9847 states, 9836 states have (on average 1.324623830825539) internal successors, (13029), 9846 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9847 states to 9847 states and 13029 transitions. [2021-11-03 04:11:30,413 INFO L78 Accepts]: Start accepts. Automaton has 9847 states and 13029 transitions. Word has length 44 [2021-11-03 04:11:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:30,413 INFO L470 AbstractCegarLoop]: Abstraction has 9847 states and 13029 transitions. [2021-11-03 04:11:30,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9847 states and 13029 transitions. [2021-11-03 04:11:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:11:30,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:30,414 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] [2021-11-03 04:11:30,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:30,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:30,618 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:11:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1537453454, now seen corresponding path program 1 times [2021-11-03 04:11:30,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:30,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557790222] [2021-11-03 04:11:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:30,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:30,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:30,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:30,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:11:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:31,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:11:31,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:31,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:31,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:31,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557790222] [2021-11-03 04:11:31,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557790222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:31,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:31,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:11:31,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403962031] [2021-11-03 04:11:31,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:11:31,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:11:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:31,891 INFO L87 Difference]: Start difference. First operand 9847 states and 13029 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:33,869 INFO L93 Difference]: Finished difference Result 20142 states and 26962 transitions. [2021-11-03 04:11:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:11:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 04:11:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:33,890 INFO L225 Difference]: With dead ends: 20142 [2021-11-03 04:11:33,890 INFO L226 Difference]: Without dead ends: 10303 [2021-11-03 04:11:33,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2021-11-03 04:11:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 10303. [2021-11-03 04:11:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10303 states, 10292 states have (on average 1.3102409638554218) internal successors, (13485), 10302 states have internal predecessors, (13485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 13485 transitions. [2021-11-03 04:11:35,599 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 13485 transitions. Word has length 47 [2021-11-03 04:11:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:35,599 INFO L470 AbstractCegarLoop]: Abstraction has 10303 states and 13485 transitions. [2021-11-03 04:11:35,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 13485 transitions. [2021-11-03 04:11:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:11:35,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:35,601 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:35,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:35,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:35,801 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:11:35,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1909705166, now seen corresponding path program 1 times [2021-11-03 04:11:35,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:35,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598606140] [2021-11-03 04:11:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:35,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:35,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:35,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:11:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:36,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:11:36,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:37,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:37,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:37,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598606140] [2021-11-03 04:11:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598606140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:11:37,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [193870154] [2021-11-03 04:11:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:37,648 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:11:37,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:11:37,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:11:37,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-03 04:11:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:38,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:11:38,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:11:39,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:11:39,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [193870154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:39,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:11:39,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 13 [2021-11-03 04:11:39,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730394038] [2021-11-03 04:11:39,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:11:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:11:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:11:39,264 INFO L87 Difference]: Start difference. First operand 10303 states and 13485 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:04,930 INFO L93 Difference]: Finished difference Result 94555 states and 124777 transitions. [2021-11-03 04:12:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:12:04,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 04:12:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:05,119 INFO L225 Difference]: With dead ends: 94555 [2021-11-03 04:12:05,119 INFO L226 Difference]: Without dead ends: 84260 [2021-11-03 04:12:05,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:12:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84260 states. [2021-11-03 04:12:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84260 to 10351. [2021-11-03 04:12:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10351 states, 10340 states have (on average 1.3088007736943907) internal successors, (13533), 10350 states have internal predecessors, (13533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10351 states to 10351 states and 13533 transitions. [2021-11-03 04:12:07,580 INFO L78 Accepts]: Start accepts. Automaton has 10351 states and 13533 transitions. Word has length 49 [2021-11-03 04:12:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:07,580 INFO L470 AbstractCegarLoop]: Abstraction has 10351 states and 13533 transitions. [2021-11-03 04:12:07,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10351 states and 13533 transitions. [2021-11-03 04:12:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:12:07,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:07,582 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] [2021-11-03 04:12:07,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:07,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:07,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:07,989 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:12:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -61741317, now seen corresponding path program 1 times [2021-11-03 04:12:07,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:07,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634364262] [2021-11-03 04:12:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:07,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:07,992 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:07,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:12:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:08,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:12:08,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:09,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:09,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:09,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634364262] [2021-11-03 04:12:09,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634364262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:09,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:09,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:12:09,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44954668] [2021-11-03 04:12:09,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:12:09,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:12:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:12:09,289 INFO L87 Difference]: Start difference. First operand 10351 states and 13533 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:16,862 INFO L93 Difference]: Finished difference Result 39879 states and 52124 transitions. [2021-11-03 04:12:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:12:16,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-11-03 04:12:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:16,912 INFO L225 Difference]: With dead ends: 39879 [2021-11-03 04:12:16,913 INFO L226 Difference]: Without dead ends: 29536 [2021-11-03 04:12:16,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:12:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29536 states. [2021-11-03 04:12:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29536 to 9728. [2021-11-03 04:12:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9728 states, 9717 states have (on average 1.304826592569723) internal successors, (12679), 9727 states have internal predecessors, (12679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9728 states to 9728 states and 12679 transitions. [2021-11-03 04:12:19,267 INFO L78 Accepts]: Start accepts. Automaton has 9728 states and 12679 transitions. Word has length 52 [2021-11-03 04:12:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:19,268 INFO L470 AbstractCegarLoop]: Abstraction has 9728 states and 12679 transitions. [2021-11-03 04:12:19,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9728 states and 12679 transitions. [2021-11-03 04:12:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:12:19,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:19,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:12:19,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:19,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:19,494 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:12:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1082809671, now seen corresponding path program 1 times [2021-11-03 04:12:19,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:19,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078837438] [2021-11-03 04:12:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:19,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:19,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:19,497 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:19,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:12:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:20,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:12:20,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:20,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:20,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:20,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078837438] [2021-11-03 04:12:20,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078837438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:20,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:20,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:12:20,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053279760] [2021-11-03 04:12:20,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:12:20,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:12:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:12:20,929 INFO L87 Difference]: Start difference. First operand 9728 states and 12679 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:34,274 INFO L93 Difference]: Finished difference Result 64044 states and 84119 transitions. [2021-11-03 04:12:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:12:34,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2021-11-03 04:12:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:34,371 INFO L225 Difference]: With dead ends: 64044 [2021-11-03 04:12:34,371 INFO L226 Difference]: Without dead ends: 58790 [2021-11-03 04:12:34,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:12:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58790 states. [2021-11-03 04:12:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58790 to 9908. [2021-11-03 04:12:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9908 states, 9897 states have (on average 1.2992826108921895) internal successors, (12859), 9907 states have internal predecessors, (12859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9908 states to 9908 states and 12859 transitions. [2021-11-03 04:12:36,747 INFO L78 Accepts]: Start accepts. Automaton has 9908 states and 12859 transitions. Word has length 52 [2021-11-03 04:12:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:36,748 INFO L470 AbstractCegarLoop]: Abstraction has 9908 states and 12859 transitions. [2021-11-03 04:12:36,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9908 states and 12859 transitions. [2021-11-03 04:12:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:12:36,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:36,750 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] [2021-11-03 04:12:36,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 04:12:36,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:36,966 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:12:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1523213883, now seen corresponding path program 1 times [2021-11-03 04:12:36,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:36,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084938695] [2021-11-03 04:12:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:36,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:36,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:36,968 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:36,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:12:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:37,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:12:37,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:38,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:38,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:38,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084938695] [2021-11-03 04:12:38,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084938695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:38,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:38,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:12:38,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469740045] [2021-11-03 04:12:38,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:12:38,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:12:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:12:38,184 INFO L87 Difference]: Start difference. First operand 9908 states and 12859 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:42,110 INFO L93 Difference]: Finished difference Result 24466 states and 31889 transitions. [2021-11-03 04:12:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:12:42,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 04:12:42,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:42,135 INFO L225 Difference]: With dead ends: 24466 [2021-11-03 04:12:42,135 INFO L226 Difference]: Without dead ends: 19122 [2021-11-03 04:12:42,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:12:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19122 states. [2021-11-03 04:12:44,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19122 to 9980. [2021-11-03 04:12:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 9969 states have (on average 1.2983248069013944) internal successors, (12943), 9979 states have internal predecessors, (12943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 12943 transitions. [2021-11-03 04:12:44,268 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 12943 transitions. Word has length 52 [2021-11-03 04:12:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:44,269 INFO L470 AbstractCegarLoop]: Abstraction has 9980 states and 12943 transitions. [2021-11-03 04:12:44,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 12943 transitions. [2021-11-03 04:12:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:12:44,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:44,271 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:12:44,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:44,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:44,480 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:12:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1636815281, now seen corresponding path program 1 times [2021-11-03 04:12:44,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:44,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584921912] [2021-11-03 04:12:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:44,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:44,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:44,482 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:44,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:12:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:45,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:12:45,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:45,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:46,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:46,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584921912] [2021-11-03 04:12:46,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584921912] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:12:46,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1087125115] [2021-11-03 04:12:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:46,428 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:12:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:12:46,429 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:12:46,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 04:12:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:47,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:12:47,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:12:48,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:12:48,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1087125115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:48,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:12:48,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-03 04:12:48,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31443467] [2021-11-03 04:12:48,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:12:48,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:12:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:12:48,664 INFO L87 Difference]: Start difference. First operand 9980 states and 12943 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:12,101 INFO L93 Difference]: Finished difference Result 60254 states and 78823 transitions. [2021-11-03 04:13:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:13:12,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 [2021-11-03 04:13:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:12,182 INFO L225 Difference]: With dead ends: 60254 [2021-11-03 04:13:12,182 INFO L226 Difference]: Without dead ends: 50282 [2021-11-03 04:13:12,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:13:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50282 states. [2021-11-03 04:13:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50282 to 9606. [2021-11-03 04:13:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9595 states have (on average 1.2955706096925481) internal successors, (12431), 9605 states have internal predecessors, (12431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 12431 transitions. [2021-11-03 04:13:14,762 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 12431 transitions. Word has length 53 [2021-11-03 04:13:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:14,763 INFO L470 AbstractCegarLoop]: Abstraction has 9606 states and 12431 transitions. [2021-11-03 04:13:14,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 12431 transitions. [2021-11-03 04:13:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:13:14,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:14,765 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:14,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:14,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:15,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:13:15,177 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 04:13:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1066011435, now seen corresponding path program 1 times [2021-11-03 04:13:15,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:15,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82522898] [2021-11-03 04:13:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:15,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:15,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:15,179 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:15,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d9966d-8c02-4816-bca8-b9bd373eba20/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:13:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:16,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:13:16,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:16,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:16,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:16,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82522898] [2021-11-03 04:13:16,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82522898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:16,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:16,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-03 04:13:16,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263678059] [2021-11-03 04:13:16,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:13:16,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:13:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:13:16,796 INFO L87 Difference]: Start difference. First operand 9606 states and 12431 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:10,290 INFO L93 Difference]: Finished difference Result 166075 states and 219565 transitions. [2021-11-03 04:14:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:14:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 [2021-11-03 04:14:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:10,844 INFO L225 Difference]: With dead ends: 166075 [2021-11-03 04:14:10,844 INFO L226 Difference]: Without dead ends: 156477 [2021-11-03 04:14:10,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:14:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156477 states.