./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:52:53,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:53,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:53,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:53,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:53,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:53,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:53,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:52:53,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:52:53,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:52:53,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:52:53,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:52:53,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:52:53,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:52:53,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:52:53,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:52:53,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:52:53,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:52:53,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:52:53,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:52:53,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:52:53,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:52:53,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:52:53,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:52:53,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:52:53,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:52:53,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:52:53,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:52:53,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:52:53,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:52:53,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:52:53,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:52:53,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:52:53,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:52:53,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:52:53,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:52:53,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:52:53,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:52:53,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:52:53,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:52:53,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:52:53,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:52:53,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:52:53,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:52:53,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:52:53,558 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:52:53,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:52:53,558 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:52:53,559 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:52:53,559 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:52:53,565 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:52:53,565 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:52:53,566 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:52:53,567 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:52:53,567 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:52:53,567 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:52:53,568 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:52:53,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:52:53,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:52:53,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:52:53,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:52:53,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:52:53,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:52:53,570 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:52:53,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:52:53,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:52:53,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:52:53,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:52:53,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:52:53,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:53,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:52:53,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:52:53,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:52:53,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:52:53,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:52:53,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:52:53,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:52:53,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:52:53,575 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2021-11-07 00:52:53,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:52:53,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:52:53,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:52:53,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:52:53,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:52:53,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-07 00:52:53,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/f445e80b8/c69ae786da134aa1b13f5dec25fb9c80/FLAG0f0918587 [2021-11-07 00:52:54,967 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:52:54,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-07 00:52:55,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/f445e80b8/c69ae786da134aa1b13f5dec25fb9c80/FLAG0f0918587 [2021-11-07 00:52:55,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/f445e80b8/c69ae786da134aa1b13f5dec25fb9c80 [2021-11-07 00:52:55,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:52:55,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:52:55,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:55,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:52:55,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:52:55,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:55" (1/1) ... [2021-11-07 00:52:55,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c2e4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:55, skipping insertion in model container [2021-11-07 00:52:55,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:55" (1/1) ... [2021-11-07 00:52:55,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:52:55,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:52:57,591 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-11-07 00:52:57,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:57,726 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:52:57,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5036b440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57, skipping insertion in model container [2021-11-07 00:52:57,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:57,727 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:52:57,731 INFO L168 Benchmark]: Toolchain (without parser) took 2355.07 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 50.8 MB in the beginning and 61.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:52:57,732 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:52:57,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2352.22 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 50.6 MB in the beginning and 61.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:52:57,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2352.22 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 50.6 MB in the beginning and 61.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6627]: 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:52:59,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:59,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:59,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:59,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:59,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:59,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:59,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:00,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:00,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:00,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:00,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:00,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:00,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:00,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:00,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:00,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:00,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:00,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:00,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:00,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:00,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:00,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:00,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:00,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:00,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:00,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:00,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:00,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:00,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:00,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:00,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:00,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:00,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:00,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:00,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:00,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:00,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:00,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:00,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:00,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:00,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:00,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:00,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:00,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:00,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:00,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:00,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:00,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:00,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:00,132 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:00,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:00,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:00,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:00,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:00,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:00,136 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:00,136 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:00,137 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:00,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:00,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:00,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:00,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:00,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:00,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:00,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:00,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:00,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:00,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:00,139 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:00,140 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:00,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:00,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:00,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:00,140 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2021-11-07 00:53:00,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:00,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:00,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:00,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:00,532 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:00,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-07 00:53:00,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/fc7604d4a/8eb129669ee54945a432cab70e173ace/FLAGe1e564a2c [2021-11-07 00:53:01,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:01,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-07 00:53:01,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/fc7604d4a/8eb129669ee54945a432cab70e173ace/FLAGe1e564a2c [2021-11-07 00:53:01,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/data/fc7604d4a/8eb129669ee54945a432cab70e173ace [2021-11-07 00:53:01,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:01,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:01,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:01,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:01,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:01,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:01,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2f8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01, skipping insertion in model container [2021-11-07 00:53:01,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:01,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:02,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:04,009 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-11-07 00:53:04,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:04,132 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:04,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:04,590 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-11-07 00:53:04,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:04,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:05,016 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_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-11-07 00:53:05,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:05,129 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:05,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05 WrapperNode [2021-11-07 00:53:05,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:05,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:05,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:05,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:05,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:05,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:05,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:05,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:05,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:05,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:05,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:05,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:05,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:05,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:06,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:06,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:06,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:06,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:06,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:06,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:06,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:06,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (1/1) ... [2021-11-07 00:53:06,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:06,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:06,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:06,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:53:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:53:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:53:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:53:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:53:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:53:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-11-07 00:53:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-11-07 00:53:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:53:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:53:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:53:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:53:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 00:53:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 00:53:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:53:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:53:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 00:53:06,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 00:53:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:53:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:53:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:53:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:53:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:53:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-11-07 00:53:06,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-11-07 00:53:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-11-07 00:53:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-11-07 00:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-11-07 00:53:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-11-07 00:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:07,436 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:20,231 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##623: assume !false; [2021-11-07 00:54:20,231 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##622: assume false; [2021-11-07 00:54:20,232 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:22,695 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-11-07 00:54:22,695 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-11-07 00:54:22,703 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:22,704 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:56:08,620 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##232: assume false; [2021-11-07 00:56:08,621 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##233: assume !false; [2021-11-07 00:56:08,621 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res := 0bv32; [2021-11-07 00:56:08,621 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##194: assume !false; [2021-11-07 00:56:08,622 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##193: assume false; [2021-11-07 00:56:12,495 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:56:19,725 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-07 00:56:19,725 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-07 00:56:19,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:56:19,755 INFO L299 CfgBuilder]: Removed 1122 assume(true) statements. [2021-11-07 00:56:19,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:19 BoogieIcfgContainer [2021-11-07 00:56:19,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:56:19,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:56:19,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:56:19,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:56:19,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:01" (1/3) ... [2021-11-07 00:56:19,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b9c34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:19, skipping insertion in model container [2021-11-07 00:56:19,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:05" (2/3) ... [2021-11-07 00:56:19,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b9c34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:19, skipping insertion in model container [2021-11-07 00:56:19,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:19" (3/3) ... [2021-11-07 00:56:19,769 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-07 00:56:19,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:56:19,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 00:56:19,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:56:19,845 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:56:19,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 00:56:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 1538 states have (on average 1.5097529258777633) internal successors, (2322), 1548 states have internal predecessors, (2322), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 00:56:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 00:56:19,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:19,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:19,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 00:56:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1079846349, now seen corresponding path program 1 times [2021-11-07 00:56:19,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:19,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904168666] [2021-11-07 00:56:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:19,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:19,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:19,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:19,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:56:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:23,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:56:23,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:23,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:23,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:23,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904168666] [2021-11-07 00:56:23,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904168666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:23,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:23,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:56:23,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156785097] [2021-11-07 00:56:23,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:56:23,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:56:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:23,981 INFO L87 Difference]: Start difference. First operand has 1565 states, 1538 states have (on average 1.5097529258777633) internal successors, (2322), 1548 states have internal predecessors, (2322), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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) [2021-11-07 00:56:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:24,476 INFO L93 Difference]: Finished difference Result 4659 states and 7034 transitions. [2021-11-07 00:56:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:56:24,478 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 [2021-11-07 00:56:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:24,511 INFO L225 Difference]: With dead ends: 4659 [2021-11-07 00:56:24,511 INFO L226 Difference]: Without dead ends: 3074 [2021-11-07 00:56:24,527 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 [2021-11-07 00:56:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2021-11-07 00:56:24,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3062. [2021-11-07 00:56:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3018 states have (on average 1.3836978131212723) internal successors, (4176), 3029 states have internal predecessors, (4176), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (36), 24 states have call predecessors, (36), 24 states have call successors, (36) [2021-11-07 00:56:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4236 transitions. [2021-11-07 00:56:24,742 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4236 transitions. Word has length 10 [2021-11-07 00:56:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:24,743 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 4236 transitions. [2021-11-07 00:56:24,743 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) [2021-11-07 00:56:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4236 transitions. [2021-11-07 00:56:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 00:56:24,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:24,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:24,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:24,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:24,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 00:56:24,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash -884497220, now seen corresponding path program 1 times [2021-11-07 00:56:24,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:24,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661390270] [2021-11-07 00:56:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:24,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:24,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:24,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:24,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:56:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:28,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:56:28,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:28,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:28,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:28,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661390270] [2021-11-07 00:56:28,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661390270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:28,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:28,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:56:28,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152619319] [2021-11-07 00:56:28,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:56:28,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:56:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:28,967 INFO L87 Difference]: Start difference. First operand 3062 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:29,351 INFO L93 Difference]: Finished difference Result 9166 states and 12757 transitions. [2021-11-07 00:56:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:56:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 00:56:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:29,397 INFO L225 Difference]: With dead ends: 9166 [2021-11-07 00:56:29,398 INFO L226 Difference]: Without dead ends: 6109 [2021-11-07 00:56:29,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6109 states. [2021-11-07 00:56:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6109 to 6089. [2021-11-07 00:56:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 6009 states have (on average 1.384090530870361) internal successors, (8317), 6024 states have internal predecessors, (8317), 48 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (108), 48 states have call predecessors, (108), 48 states have call successors, (108) [2021-11-07 00:56:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 8473 transitions. [2021-11-07 00:56:29,760 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 8473 transitions. Word has length 11 [2021-11-07 00:56:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:29,761 INFO L470 AbstractCegarLoop]: Abstraction has 6089 states and 8473 transitions. [2021-11-07 00:56:29,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 8473 transitions. [2021-11-07 00:56:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:56:29,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:29,765 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] [2021-11-07 00:56:29,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:29,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:29,980 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 00:56:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash -838366663, now seen corresponding path program 1 times [2021-11-07 00:56:29,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:29,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94626432] [2021-11-07 00:56:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:29,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:29,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:29,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:30,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:56:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:33,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:56:33,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:34,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:34,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:34,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94626432] [2021-11-07 00:56:34,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94626432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:34,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:34,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:56:34,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58833234] [2021-11-07 00:56:34,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:56:34,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:56:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:56:34,768 INFO L87 Difference]: Start difference. First operand 6089 states and 8473 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:35,311 INFO L93 Difference]: Finished difference Result 12172 states and 16939 transitions. [2021-11-07 00:56:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:56:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:35,354 INFO L225 Difference]: With dead ends: 12172 [2021-11-07 00:56:35,354 INFO L226 Difference]: Without dead ends: 6089 [2021-11-07 00:56:35,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:56:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2021-11-07 00:56:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 6089. [2021-11-07 00:56:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 6009 states have (on average 1.3839241138292562) internal successors, (8316), 6024 states have internal predecessors, (8316), 48 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (108), 48 states have call predecessors, (108), 48 states have call successors, (108) [2021-11-07 00:56:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 8472 transitions. [2021-11-07 00:56:35,651 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 8472 transitions. Word has length 44 [2021-11-07 00:56:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:35,652 INFO L470 AbstractCegarLoop]: Abstraction has 6089 states and 8472 transitions. [2021-11-07 00:56:35,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 8472 transitions. [2021-11-07 00:56:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:56:35,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:35,662 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] [2021-11-07 00:56:35,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:35,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:35,886 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 00:56:35,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1611233467, now seen corresponding path program 1 times [2021-11-07 00:56:35,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:35,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926195171] [2021-11-07 00:56:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:35,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:35,893 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:35,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:56:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:39,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:56:39,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:40,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:40,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:40,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926195171] [2021-11-07 00:56:40,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926195171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:40,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:40,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:56:40,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757055422] [2021-11-07 00:56:40,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:56:40,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:40,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:56:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:56:40,707 INFO L87 Difference]: Start difference. First operand 6089 states and 8472 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:41,241 INFO L93 Difference]: Finished difference Result 12242 states and 17054 transitions. [2021-11-07 00:56:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:56:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:41,290 INFO L225 Difference]: With dead ends: 12242 [2021-11-07 00:56:41,290 INFO L226 Difference]: Without dead ends: 6160 [2021-11-07 00:56:41,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:56:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2021-11-07 00:56:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6160. [2021-11-07 00:56:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6080 states have (on average 1.384375) internal successors, (8417), 6095 states have internal predecessors, (8417), 48 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (108), 48 states have call predecessors, (108), 48 states have call successors, (108) [2021-11-07 00:56:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 8573 transitions. [2021-11-07 00:56:41,576 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 8573 transitions. Word has length 44 [2021-11-07 00:56:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:41,576 INFO L470 AbstractCegarLoop]: Abstraction has 6160 states and 8573 transitions. [2021-11-07 00:56:41,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 8573 transitions. [2021-11-07 00:56:41,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 00:56:41,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:41,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:41,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:41,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:41,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 00:56:41,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2004106543, now seen corresponding path program 1 times [2021-11-07 00:56:41,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:41,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570845524] [2021-11-07 00:56:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:41,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:41,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:41,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:56:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:45,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:56:45,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:47,117 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 00:56:47,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 17 [2021-11-07 00:56:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:48,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:52,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:52,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570845524] [2021-11-07 00:56:52,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570845524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:52,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:52,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 00:56:52,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714010214] [2021-11-07 00:56:52,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:56:52,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:56:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:56:52,233 INFO L87 Difference]: Start difference. First operand 6160 states and 8573 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:04:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:30,978 INFO L93 Difference]: Finished difference Result 17400 states and 24883 transitions. [2021-11-07 01:04:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:04:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 01:04:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:31,062 INFO L225 Difference]: With dead ends: 17400 [2021-11-07 01:04:31,062 INFO L226 Difference]: Without dead ends: 11248 [2021-11-07 01:04:31,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:04:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2021-11-07 01:04:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 10953. [2021-11-07 01:04:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10953 states, 10697 states have (on average 1.3712255772646536) internal successors, (14668), 10759 states have internal predecessors, (14668), 123 states have call successors, (123), 52 states have call predecessors, (123), 125 states have return successors, (857), 165 states have call predecessors, (857), 123 states have call successors, (857) [2021-11-07 01:04:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10953 states to 10953 states and 15648 transitions. [2021-11-07 01:04:31,705 INFO L78 Accepts]: Start accepts. Automaton has 10953 states and 15648 transitions. Word has length 62 [2021-11-07 01:04:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:31,706 INFO L470 AbstractCegarLoop]: Abstraction has 10953 states and 15648 transitions. [2021-11-07 01:04:31,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:04:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 10953 states and 15648 transitions. [2021-11-07 01:04:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:04:31,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:31,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:31,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:31,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:31,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:04:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash -362588051, now seen corresponding path program 1 times [2021-11-07 01:04:31,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:31,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622222034] [2021-11-07 01:04:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:31,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:31,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:31,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:04:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:36,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:04:36,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:37,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:38,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:38,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622222034] [2021-11-07 01:04:38,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622222034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:38,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:38,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:04:38,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182721861] [2021-11-07 01:04:38,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:04:38,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:38,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:04:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:04:38,380 INFO L87 Difference]: Start difference. First operand 10953 states and 15648 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:04:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:44,847 INFO L93 Difference]: Finished difference Result 28491 states and 41629 transitions. [2021-11-07 01:04:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:04:44,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 01:04:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:44,952 INFO L225 Difference]: With dead ends: 28491 [2021-11-07 01:04:44,952 INFO L226 Difference]: Without dead ends: 17546 [2021-11-07 01:04:45,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:04:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17546 states. [2021-11-07 01:04:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17546 to 10993. [2021-11-07 01:04:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10993 states, 10737 states have (on average 1.3698426003539164) internal successors, (14708), 10799 states have internal predecessors, (14708), 123 states have call successors, (123), 52 states have call predecessors, (123), 125 states have return successors, (857), 165 states have call predecessors, (857), 123 states have call successors, (857) [2021-11-07 01:04:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10993 states to 10993 states and 15688 transitions. [2021-11-07 01:04:45,934 INFO L78 Accepts]: Start accepts. Automaton has 10993 states and 15688 transitions. Word has length 62 [2021-11-07 01:04:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:45,934 INFO L470 AbstractCegarLoop]: Abstraction has 10993 states and 15688 transitions. [2021-11-07 01:04:45,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:04:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 10993 states and 15688 transitions. [2021-11-07 01:04:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:04:45,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:45,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:45,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:04:46,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:46,160 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:04:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:46,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1259981329, now seen corresponding path program 1 times [2021-11-07 01:04:46,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:46,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857198436] [2021-11-07 01:04:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:46,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:46,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:46,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:04:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:50,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:04:50,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:50,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:51,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:51,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857198436] [2021-11-07 01:04:51,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857198436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:51,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:51,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:04:51,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574197894] [2021-11-07 01:04:51,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:51,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:51,286 INFO L87 Difference]: Start difference. First operand 10993 states and 15688 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:04:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:52,926 INFO L93 Difference]: Finished difference Result 31868 states and 46199 transitions. [2021-11-07 01:04:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 01:04:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:53,164 INFO L225 Difference]: With dead ends: 31868 [2021-11-07 01:04:53,164 INFO L226 Difference]: Without dead ends: 20883 [2021-11-07 01:04:53,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20883 states. [2021-11-07 01:04:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20883 to 10929. [2021-11-07 01:04:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10929 states, 10673 states have (on average 1.3660638995596364) internal successors, (14580), 10735 states have internal predecessors, (14580), 123 states have call successors, (123), 52 states have call predecessors, (123), 125 states have return successors, (857), 165 states have call predecessors, (857), 123 states have call successors, (857) [2021-11-07 01:04:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10929 states to 10929 states and 15560 transitions. [2021-11-07 01:04:54,143 INFO L78 Accepts]: Start accepts. Automaton has 10929 states and 15560 transitions. Word has length 62 [2021-11-07 01:04:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:54,144 INFO L470 AbstractCegarLoop]: Abstraction has 10929 states and 15560 transitions. [2021-11-07 01:04:54,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:04:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10929 states and 15560 transitions. [2021-11-07 01:04:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:04:54,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:54,146 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:54,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:54,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:54,360 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:04:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1159911183, now seen corresponding path program 1 times [2021-11-07 01:04:54,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:54,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486556288] [2021-11-07 01:04:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:54,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:54,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:54,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:54,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:04:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:58,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:04:58,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:59,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:59,753 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:59,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486556288] [2021-11-07 01:04:59,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486556288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:59,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:59,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:04:59,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700794738] [2021-11-07 01:04:59,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:04:59,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:59,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:04:59,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:04:59,755 INFO L87 Difference]: Start difference. First operand 10929 states and 15560 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:05:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:05,822 INFO L93 Difference]: Finished difference Result 43492 states and 62838 transitions. [2021-11-07 01:05:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:05:05,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 01:05:05,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:05,981 INFO L225 Difference]: With dead ends: 43492 [2021-11-07 01:05:05,982 INFO L226 Difference]: Without dead ends: 32571 [2021-11-07 01:05:06,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:05:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32571 states. [2021-11-07 01:05:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32571 to 10961. [2021-11-07 01:05:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10961 states, 10705 states have (on average 1.3649696403549743) internal successors, (14612), 10767 states have internal predecessors, (14612), 123 states have call successors, (123), 52 states have call predecessors, (123), 125 states have return successors, (857), 165 states have call predecessors, (857), 123 states have call successors, (857) [2021-11-07 01:05:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 15592 transitions. [2021-11-07 01:05:07,257 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 15592 transitions. Word has length 62 [2021-11-07 01:05:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:07,260 INFO L470 AbstractCegarLoop]: Abstraction has 10961 states and 15592 transitions. [2021-11-07 01:05:07,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:05:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 15592 transitions. [2021-11-07 01:05:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:05:07,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:07,264 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:07,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:07,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:07,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:05:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash 119952495, now seen corresponding path program 1 times [2021-11-07 01:05:07,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:07,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530656475] [2021-11-07 01:05:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:07,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:07,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:07,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:05:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:11,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:05:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:12,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:12,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:12,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530656475] [2021-11-07 01:05:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530656475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:12,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:12,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:05:12,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446240135] [2021-11-07 01:05:12,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:05:12,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:05:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:05:12,476 INFO L87 Difference]: Start difference. First operand 10961 states and 15592 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:05:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:17,362 INFO L93 Difference]: Finished difference Result 41777 states and 60014 transitions. [2021-11-07 01:05:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:05:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 01:05:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:17,535 INFO L225 Difference]: With dead ends: 41777 [2021-11-07 01:05:17,536 INFO L226 Difference]: Without dead ends: 36241 [2021-11-07 01:05:17,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36241 states. [2021-11-07 01:05:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36241 to 10961. [2021-11-07 01:05:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10961 states, 10705 states have (on average 1.3634750116767866) internal successors, (14596), 10767 states have internal predecessors, (14596), 123 states have call successors, (123), 52 states have call predecessors, (123), 125 states have return successors, (857), 165 states have call predecessors, (857), 123 states have call successors, (857) [2021-11-07 01:05:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 15576 transitions. [2021-11-07 01:05:18,877 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 15576 transitions. Word has length 62 [2021-11-07 01:05:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:18,877 INFO L470 AbstractCegarLoop]: Abstraction has 10961 states and 15576 transitions. [2021-11-07 01:05:18,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:05:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 15576 transitions. [2021-11-07 01:05:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:05:18,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:18,880 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:18,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:19,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:19,104 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:05:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash 709865666, now seen corresponding path program 1 times [2021-11-07 01:05:19,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:19,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310393677] [2021-11-07 01:05:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:19,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:19,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:19,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:19,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:05:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:23,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:05:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:23,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:25,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:25,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310393677] [2021-11-07 01:05:25,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310393677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:25,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:25,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:05:25,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928295112] [2021-11-07 01:05:25,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:05:25,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:05:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:05:25,091 INFO L87 Difference]: Start difference. First operand 10961 states and 15576 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:05:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:30,442 INFO L93 Difference]: Finished difference Result 21868 states and 31035 transitions. [2021-11-07 01:05:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:05:30,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2021-11-07 01:05:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:30,512 INFO L225 Difference]: With dead ends: 21868 [2021-11-07 01:05:30,512 INFO L226 Difference]: Without dead ends: 10911 [2021-11-07 01:05:30,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:05:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10911 states. [2021-11-07 01:05:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10911 to 10883. [2021-11-07 01:05:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10883 states, 10631 states have (on average 1.3617721757125387) internal successors, (14477), 10690 states have internal predecessors, (14477), 119 states have call successors, (119), 52 states have call predecessors, (119), 125 states have return successors, (832), 164 states have call predecessors, (832), 119 states have call successors, (832) [2021-11-07 01:05:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10883 states to 10883 states and 15428 transitions. [2021-11-07 01:05:31,647 INFO L78 Accepts]: Start accepts. Automaton has 10883 states and 15428 transitions. Word has length 65 [2021-11-07 01:05:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:31,648 INFO L470 AbstractCegarLoop]: Abstraction has 10883 states and 15428 transitions. [2021-11-07 01:05:31,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:05:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10883 states and 15428 transitions. [2021-11-07 01:05:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:05:31,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:31,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:31,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:31,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:31,860 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:05:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash 143666066, now seen corresponding path program 1 times [2021-11-07 01:05:31,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:31,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678538395] [2021-11-07 01:05:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:31,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:31,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:31,864 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:31,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:05:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:36,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:05:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:37,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:39,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:39,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678538395] [2021-11-07 01:05:39,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678538395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:39,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:39,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:05:39,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12352796] [2021-11-07 01:05:39,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:05:39,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:05:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:05:39,430 INFO L87 Difference]: Start difference. First operand 10883 states and 15428 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:50,161 INFO L93 Difference]: Finished difference Result 43718 states and 67409 transitions. [2021-11-07 01:05:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:05:50,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:05:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:50,409 INFO L225 Difference]: With dead ends: 43718 [2021-11-07 01:05:50,409 INFO L226 Difference]: Without dead ends: 38215 [2021-11-07 01:05:50,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:05:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38215 states. [2021-11-07 01:05:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38215 to 37987. [2021-11-07 01:05:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37987 states, 37115 states have (on average 1.361201670483632) internal successors, (50521), 37314 states have internal predecessors, (50521), 419 states have call successors, (419), 182 states have call predecessors, (419), 445 states have return successors, (7730), 574 states have call predecessors, (7730), 419 states have call successors, (7730) [2021-11-07 01:05:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37987 states to 37987 states and 58670 transitions. [2021-11-07 01:05:53,780 INFO L78 Accepts]: Start accepts. Automaton has 37987 states and 58670 transitions. Word has length 66 [2021-11-07 01:05:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:53,781 INFO L470 AbstractCegarLoop]: Abstraction has 37987 states and 58670 transitions. [2021-11-07 01:05:53,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand 37987 states and 58670 transitions. [2021-11-07 01:05:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:05:53,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:53,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:53,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:53,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:53,989 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:05:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1441289134, now seen corresponding path program 1 times [2021-11-07 01:05:53,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:53,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291088721] [2021-11-07 01:05:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:53,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:53,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:53,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:53,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:05:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:58,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:58,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:58,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:59,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:59,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291088721] [2021-11-07 01:05:59,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291088721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:59,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:59,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:05:59,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786415836] [2021-11-07 01:05:59,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:59,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:59,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:05:59,297 INFO L87 Difference]: Start difference. First operand 37987 states and 58670 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:04,677 INFO L93 Difference]: Finished difference Result 87531 states and 141454 transitions. [2021-11-07 01:06:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:04,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:06:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:05,251 INFO L225 Difference]: With dead ends: 87531 [2021-11-07 01:06:05,251 INFO L226 Difference]: Without dead ends: 49552 [2021-11-07 01:06:05,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:06:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49552 states. [2021-11-07 01:06:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49552 to 35138. [2021-11-07 01:06:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35138 states, 34328 states have (on average 1.3601141924959217) internal successors, (46690), 34513 states have internal predecessors, (46690), 389 states have call successors, (389), 169 states have call predecessors, (389), 413 states have return successors, (7026), 533 states have call predecessors, (7026), 389 states have call successors, (7026) [2021-11-07 01:06:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35138 states to 35138 states and 54105 transitions. [2021-11-07 01:06:08,949 INFO L78 Accepts]: Start accepts. Automaton has 35138 states and 54105 transitions. Word has length 66 [2021-11-07 01:06:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:08,949 INFO L470 AbstractCegarLoop]: Abstraction has 35138 states and 54105 transitions. [2021-11-07 01:06:08,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 35138 states and 54105 transitions. [2021-11-07 01:06:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:06:08,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:08,951 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:08,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:09,155 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:06:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 183745462, now seen corresponding path program 1 times [2021-11-07 01:06:09,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:09,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811319760] [2021-11-07 01:06:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:09,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:09,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:09,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:09,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:06:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:13,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:13,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:13,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:14,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:14,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811319760] [2021-11-07 01:06:14,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811319760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:14,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:14,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:14,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258661595] [2021-11-07 01:06:14,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:14,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:14,469 INFO L87 Difference]: Start difference. First operand 35138 states and 54105 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:06:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:18,976 INFO L93 Difference]: Finished difference Result 77192 states and 125823 transitions. [2021-11-07 01:06:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-11-07 01:06:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:19,510 INFO L225 Difference]: With dead ends: 77192 [2021-11-07 01:06:19,510 INFO L226 Difference]: Without dead ends: 42062 [2021-11-07 01:06:19,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42062 states. [2021-11-07 01:06:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42062 to 37090. [2021-11-07 01:06:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37090 states, 36260 states have (on average 1.3621070049641477) internal successors, (49390), 36449 states have internal predecessors, (49390), 405 states have call successors, (405), 169 states have call predecessors, (405), 417 states have return successors, (7510), 549 states have call predecessors, (7510), 405 states have call successors, (7510) [2021-11-07 01:06:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37090 states to 37090 states and 57305 transitions. [2021-11-07 01:06:23,520 INFO L78 Accepts]: Start accepts. Automaton has 37090 states and 57305 transitions. Word has length 74 [2021-11-07 01:06:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:23,520 INFO L470 AbstractCegarLoop]: Abstraction has 37090 states and 57305 transitions. [2021-11-07 01:06:23,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:06:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 37090 states and 57305 transitions. [2021-11-07 01:06:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:06:23,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:23,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:23,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:23,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:23,723 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 01:06:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1981110522, now seen corresponding path program 1 times [2021-11-07 01:06:23,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:23,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977226317] [2021-11-07 01:06:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:23,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:23,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3ee6ab-0de1-41df-b4d3-be35cd8a58ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:06:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:06:27,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:28,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:29,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:29,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977226317] [2021-11-07 01:06:29,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977226317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:29,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:29,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:06:29,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720107652] [2021-11-07 01:06:29,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:29,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:06:29,371 INFO L87 Difference]: Start difference. First operand 37090 states and 57305 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)