./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:16,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:16,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:16,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:16,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:16,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:16,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:16,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:16,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:16,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:16,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:16,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:16,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:16,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:16,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:16,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:16,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:16,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:16,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:16,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:16,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:16,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:16,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:16,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:16,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:16,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:16,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:16,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:16,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:16,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:16,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:16,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:16,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:16,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:16,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:16,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:16,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:16,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:16,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:16,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:16,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:16,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:29:16,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:16,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:16,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:16,524 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:16,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:16,524 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:16,525 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:29:16,525 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:16,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:16,525 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:29:16,527 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:29:16,527 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:16,527 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:29:16,528 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:29:16,528 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:29:16,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:16,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:29:16,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:16,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:16,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:16,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:16,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:16,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:16,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:16,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:16,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:16,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:16,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:16,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:16,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:16,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:16,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:29:16,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:29:16,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:16,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:16,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:16,536 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d [2021-11-07 01:29:16,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:16,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:16,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:16,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:16,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:16,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:29:17,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/ae0bdafe9/809b7e7b2eb24bd59a52d9ec359dbd5e/FLAG1862a942c [2021-11-07 01:29:18,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:18,244 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:29:18,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/ae0bdafe9/809b7e7b2eb24bd59a52d9ec359dbd5e/FLAG1862a942c [2021-11-07 01:29:18,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/ae0bdafe9/809b7e7b2eb24bd59a52d9ec359dbd5e [2021-11-07 01:29:18,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:18,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:18,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:18,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:18,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:18,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:18,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4c9657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18, skipping insertion in model container [2021-11-07 01:29:18,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:18,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:18,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:20,317 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-07 01:29:20,956 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:22,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:22,283 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 01:29:22,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e4de2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:22, skipping insertion in model container [2021-11-07 01:29:22,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:22,285 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:29:22,288 INFO L168 Benchmark]: Toolchain (without parser) took 3898.50 ms. Allocated memory was 138.4 MB in the beginning and 230.7 MB in the end (delta: 92.3 MB). Free memory was 105.9 MB in the beginning and 162.7 MB in the end (delta: -56.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:22,289 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:22,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3895.07 ms. Allocated memory was 138.4 MB in the beginning and 230.7 MB in the end (delta: 92.3 MB). Free memory was 105.9 MB in the beginning and 162.7 MB in the end (delta: -56.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:22,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3895.07 ms. Allocated memory was 138.4 MB in the beginning and 230.7 MB in the end (delta: 92.3 MB). Free memory was 105.9 MB in the beginning and 162.7 MB in the end (delta: -56.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6455]: 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:25,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:25,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:25,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:25,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:25,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:25,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:25,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:25,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:25,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:25,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:25,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:25,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:25,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:25,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:25,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:25,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:25,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:25,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:25,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:25,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:25,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:25,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:25,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:25,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:25,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:25,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:25,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:25,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:25,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:25,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:25,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:25,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:25,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:25,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:25,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:25,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:25,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:25,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:25,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:25,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:25,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:29:25,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:25,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:25,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:25,327 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:25,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:25,327 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:25,327 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:25,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:25,328 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:25,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:25,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:25,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:25,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:25,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:25,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:25,331 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:29:25,331 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:29:25,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:25,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:25,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:25,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:25,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:29:25,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:25,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:25,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:25,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:25,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:25,334 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:29:25,334 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:25,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:25,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:25,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:25,335 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d [2021-11-07 01:29:25,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:25,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:25,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:25,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:25,833 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:25,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:29:25,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/d29e47b3d/ff9c19fdc17a43c4966ee05fb61e62fa/FLAG8bfa01ffb [2021-11-07 01:29:27,174 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:27,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:29:27,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/d29e47b3d/ff9c19fdc17a43c4966ee05fb61e62fa/FLAG8bfa01ffb [2021-11-07 01:29:27,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/data/d29e47b3d/ff9c19fdc17a43c4966ee05fb61e62fa [2021-11-07 01:29:27,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:27,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:27,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:27,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:27,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:27,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:27" (1/1) ... [2021-11-07 01:29:27,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2573de6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:27, skipping insertion in model container [2021-11-07 01:29:27,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:27" (1/1) ... [2021-11-07 01:29:27,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:27,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:29,444 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-07 01:29:31,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:31,343 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:31,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:31,616 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-07 01:29:32,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:32,161 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:32,373 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_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-07 01:29:32,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:33,173 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:33,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33 WrapperNode [2021-11-07 01:29:33,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:33,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:33,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:33,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:33,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:33,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:33,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:33,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:33,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:33,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:33,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:33,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:34,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:34,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:34,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:34,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:34,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:35,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:35,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:35,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:35,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:35,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (1/1) ... [2021-11-07 01:29:35,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:35,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:35,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:29:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:29:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:29:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:29:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 01:29:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 01:29:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2021-11-07 01:29:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2021-11-07 01:29:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-11-07 01:29:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-11-07 01:29:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2021-11-07 01:29:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2021-11-07 01:29:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:29:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:29:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-07 01:29:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-07 01:29:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-07 01:29:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-07 01:29:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_18 [2021-11-07 01:29:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_18 [2021-11-07 01:29:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:29:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:29:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2021-11-07 01:29:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2021-11-07 01:29:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:29:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:29:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:29:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure read_int_callback [2021-11-07 01:29:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure read_int_callback [2021-11-07 01:29:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:29:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:29:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:29:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:29:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure read_ctrl_callback [2021-11-07 01:29:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ctrl_callback [2021-11-07 01:29:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-07 01:29:35,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-07 01:29:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-07 01:29:35,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-07 01:29:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2021-11-07 01:29:35,544 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2021-11-07 01:29:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2021-11-07 01:29:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2021-11-07 01:29:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:29:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2021-11-07 01:29:35,556 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2021-11-07 01:29:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure write_command_callback [2021-11-07 01:29:35,556 INFO L138 BoogieDeclarations]: Found implementation of procedure write_command_callback [2021-11-07 01:29:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:29:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:29:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:29:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:29:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure write_ctrl_callback [2021-11-07 01:29:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ctrl_callback [2021-11-07 01:29:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure read_iso_callback [2021-11-07 01:29:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure read_iso_callback [2021-11-07 01:29:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2021-11-07 01:29:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2021-11-07 01:29:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:31:24,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:31:24,449 INFO L299 CfgBuilder]: Removed 2883 assume(true) statements. [2021-11-07 01:31:24,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:24 BoogieIcfgContainer [2021-11-07 01:31:24,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:31:24,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:31:24,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:31:24,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:31:24,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:27" (1/3) ... [2021-11-07 01:31:24,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4f7bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:24, skipping insertion in model container [2021-11-07 01:31:24,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:33" (2/3) ... [2021-11-07 01:31:24,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4f7bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:24, skipping insertion in model container [2021-11-07 01:31:24,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:24" (3/3) ... [2021-11-07 01:31:24,465 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:31:24,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:31:24,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:31:24,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:31:24,544 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 01:31:24,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:31:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 3647 states, 3536 states have (on average 1.529128959276018) internal successors, (5407), 3574 states have internal predecessors, (5407), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-07 01:31:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:31:24,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:24,659 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] [2021-11-07 01:31:24,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:31:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash 431961628, now seen corresponding path program 1 times [2021-11-07 01:31:24,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:24,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926505668] [2021-11-07 01:31:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:24,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:24,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:24,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:24,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:31:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:35,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 4499 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:31:35,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:36,325 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 01:31:36,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:36,682 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 01:31:36,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:36,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926505668] [2021-11-07 01:31:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926505668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:36,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:36,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:36,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215617866] [2021-11-07 01:31:36,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:36,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:36,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:36,718 INFO L87 Difference]: Start difference. First operand has 3647 states, 3536 states have (on average 1.529128959276018) internal successors, (5407), 3574 states have internal predecessors, (5407), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:37,188 INFO L93 Difference]: Finished difference Result 7293 states and 11240 transitions. [2021-11-07 01:31:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:31:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:37,240 INFO L225 Difference]: With dead ends: 7293 [2021-11-07 01:31:37,240 INFO L226 Difference]: Without dead ends: 3637 [2021-11-07 01:31:37,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 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 01:31:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2021-11-07 01:31:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3637. [2021-11-07 01:31:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3637 states, 3527 states have (on average 1.5129004819960306) internal successors, (5336), 3564 states have internal predecessors, (5336), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-07 01:31:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5506 transitions. [2021-11-07 01:31:37,479 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5506 transitions. Word has length 36 [2021-11-07 01:31:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:37,486 INFO L470 AbstractCegarLoop]: Abstraction has 3637 states and 5506 transitions. [2021-11-07 01:31:37,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:37,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5506 transitions. [2021-11-07 01:31:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:31:37,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:37,492 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:37,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:37,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:37,708 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:31:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1831876324, now seen corresponding path program 1 times [2021-11-07 01:31:37,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:37,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531196123] [2021-11-07 01:31:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:37,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:37,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:37,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:31:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:48,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:31:48,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:49,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:50,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:50,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531196123] [2021-11-07 01:31:50,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531196123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:50,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [705033140] [2021-11-07 01:31:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:50,127 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:31:50,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:31:50,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:31:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:54,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 4509 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:54,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:31:55,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:31:55,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [705033140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:55,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:31:55,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:31:55,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870855820] [2021-11-07 01:31:55,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:55,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:31:55,429 INFO L87 Difference]: Start difference. First operand 3637 states and 5506 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:01,749 INFO L93 Difference]: Finished difference Result 14287 states and 21714 transitions. [2021-11-07 01:32:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:32:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:32:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:01,843 INFO L225 Difference]: With dead ends: 14287 [2021-11-07 01:32:01,843 INFO L226 Difference]: Without dead ends: 10686 [2021-11-07 01:32:01,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:32:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2021-11-07 01:32:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 10686. [2021-11-07 01:32:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10686 states, 10366 states have (on average 1.5180397453212424) internal successors, (15736), 10469 states have internal predecessors, (15736), 255 states have call successors, (255), 60 states have call predecessors, (255), 60 states have return successors, (255), 192 states have call predecessors, (255), 255 states have call successors, (255) [2021-11-07 01:32:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10686 states to 10686 states and 16246 transitions. [2021-11-07 01:32:02,521 INFO L78 Accepts]: Start accepts. Automaton has 10686 states and 16246 transitions. Word has length 38 [2021-11-07 01:32:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:02,522 INFO L470 AbstractCegarLoop]: Abstraction has 10686 states and 16246 transitions. [2021-11-07 01:32:02,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10686 states and 16246 transitions. [2021-11-07 01:32:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:32:02,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:02,527 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:02,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-07 01:32:02,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:02,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:02,948 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:32:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash 651069676, now seen corresponding path program 1 times [2021-11-07 01:32:02,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:02,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399297696] [2021-11-07 01:32:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:02,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:02,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:02,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:03,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:32:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:14,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 4529 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:32:14,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:14,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:15,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:15,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399297696] [2021-11-07 01:32:15,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399297696] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:15,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [458918173] [2021-11-07 01:32:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:15,549 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:15,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:32:15,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:32:15,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:32:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:19,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 4529 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:32:19,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:19,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:19,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [458918173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:19,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:32:19,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:32:19,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167154435] [2021-11-07 01:32:19,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:32:19,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:32:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:32:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:32:19,851 INFO L87 Difference]: Start difference. First operand 10686 states and 16246 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:21,448 INFO L93 Difference]: Finished difference Result 31975 states and 48640 transitions. [2021-11-07 01:32:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:32:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:32:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:21,614 INFO L225 Difference]: With dead ends: 31975 [2021-11-07 01:32:21,618 INFO L226 Difference]: Without dead ends: 21325 [2021-11-07 01:32:21,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:32:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21325 states. [2021-11-07 01:32:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21325 to 10687. [2021-11-07 01:32:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10687 states, 10367 states have (on average 1.5179897752483842) internal successors, (15737), 10470 states have internal predecessors, (15737), 255 states have call successors, (255), 60 states have call predecessors, (255), 60 states have return successors, (255), 192 states have call predecessors, (255), 255 states have call successors, (255) [2021-11-07 01:32:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10687 states to 10687 states and 16247 transitions. [2021-11-07 01:32:22,299 INFO L78 Accepts]: Start accepts. Automaton has 10687 states and 16247 transitions. Word has length 41 [2021-11-07 01:32:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:22,301 INFO L470 AbstractCegarLoop]: Abstraction has 10687 states and 16247 transitions. [2021-11-07 01:32:22,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10687 states and 16247 transitions. [2021-11-07 01:32:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:32:22,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:22,308 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:22,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:22,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:22,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:22,732 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:32:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash -981386577, now seen corresponding path program 1 times [2021-11-07 01:32:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:22,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046915396] [2021-11-07 01:32:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:22,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:22,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:22,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:32:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:34,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 4525 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:32:34,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:34,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:35,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:35,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046915396] [2021-11-07 01:32:35,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046915396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:35,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [415933533] [2021-11-07 01:32:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:35,266 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:35,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:32:35,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:32:35,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:32:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:39,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 4525 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:32:39,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:40,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:41,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [415933533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:41,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:32:41,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:32:41,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897241899] [2021-11-07 01:32:41,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:32:41,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:32:41,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:32:41,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:32:41,290 INFO L87 Difference]: Start difference. First operand 10687 states and 16247 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:44,023 INFO L93 Difference]: Finished difference Result 31987 states and 49421 transitions. [2021-11-07 01:32:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:32:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:32:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:44,134 INFO L225 Difference]: With dead ends: 31987 [2021-11-07 01:32:44,134 INFO L226 Difference]: Without dead ends: 21336 [2021-11-07 01:32:44,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:32:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21336 states. [2021-11-07 01:32:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21336 to 21324. [2021-11-07 01:32:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21324 states, 20689 states have (on average 1.5142829522934893) internal successors, (31329), 20891 states have internal predecessors, (31329), 510 states have call successors, (510), 120 states have call predecessors, (510), 120 states have return successors, (765), 384 states have call predecessors, (765), 510 states have call successors, (765) [2021-11-07 01:32:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21324 states to 21324 states and 32604 transitions. [2021-11-07 01:32:45,111 INFO L78 Accepts]: Start accepts. Automaton has 21324 states and 32604 transitions. Word has length 41 [2021-11-07 01:32:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:45,112 INFO L470 AbstractCegarLoop]: Abstraction has 21324 states and 32604 transitions. [2021-11-07 01:32:45,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 21324 states and 32604 transitions. [2021-11-07 01:32:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:32:45,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:45,117 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:45,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:45,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:45,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:45,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:32:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash -358202696, now seen corresponding path program 1 times [2021-11-07 01:32:45,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:45,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376189433] [2021-11-07 01:32:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:45,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:45,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:45,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:32:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:57,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 4526 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:32:57,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:57,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:58,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:58,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376189433] [2021-11-07 01:32:58,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376189433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:58,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2086788284] [2021-11-07 01:32:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:58,598 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:32:58,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:32:58,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:33:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 4526 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:33:02,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:33:04,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:33:04,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2086788284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:04,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:33:04,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:33:04,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784315465] [2021-11-07 01:33:04,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:33:04,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:33:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:33:04,738 INFO L87 Difference]: Start difference. First operand 21324 states and 32604 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:12,509 INFO L93 Difference]: Finished difference Result 85115 states and 133226 transitions. [2021-11-07 01:33:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:33:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 01:33:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:12,828 INFO L225 Difference]: With dead ends: 85115 [2021-11-07 01:33:12,828 INFO L226 Difference]: Without dead ends: 63827 [2021-11-07 01:33:12,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:33:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63827 states. [2021-11-07 01:33:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63827 to 63747. [2021-11-07 01:33:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63747 states, 61852 states have (on average 1.5138556554355558) internal successors, (93635), 62450 states have internal predecessors, (93635), 1530 states have call successors, (1530), 360 states have call predecessors, (1530), 360 states have return successors, (3060), 1152 states have call predecessors, (3060), 1530 states have call successors, (3060) [2021-11-07 01:33:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63747 states to 63747 states and 98225 transitions. [2021-11-07 01:33:16,960 INFO L78 Accepts]: Start accepts. Automaton has 63747 states and 98225 transitions. Word has length 42 [2021-11-07 01:33:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:16,961 INFO L470 AbstractCegarLoop]: Abstraction has 63747 states and 98225 transitions. [2021-11-07 01:33:16,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63747 states and 98225 transitions. [2021-11-07 01:33:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:33:16,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:16,966 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:17,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:17,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:17,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:17,380 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:33:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1780628441, now seen corresponding path program 1 times [2021-11-07 01:33:17,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:17,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269732288] [2021-11-07 01:33:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:17,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:17,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:17,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:17,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:33:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:29,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 4527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:33:29,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:29,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:30,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:30,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269732288] [2021-11-07 01:33:30,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269732288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:30,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346886259] [2021-11-07 01:33:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:30,634 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:30,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:33:30,635 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:33:30,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:33:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:34,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 4527 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:33:34,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:33:35,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:33:35,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346886259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:35,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:33:35,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:33:35,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061698395] [2021-11-07 01:33:35,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:33:35,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:33:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:33:35,970 INFO L87 Difference]: Start difference. First operand 63747 states and 98225 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:37,573 INFO L93 Difference]: Finished difference Result 63819 states and 98313 transitions. [2021-11-07 01:33:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:33:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:33:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:37,858 INFO L225 Difference]: With dead ends: 63819 [2021-11-07 01:33:37,859 INFO L226 Difference]: Without dead ends: 63817 [2021-11-07 01:33:37,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:33:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63817 states. [2021-11-07 01:33:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63817 to 63815. [2021-11-07 01:33:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63815 states, 61920 states have (on average 1.5135658914728682) internal successors, (93720), 62518 states have internal predecessors, (93720), 1530 states have call successors, (1530), 360 states have call predecessors, (1530), 360 states have return successors, (3060), 1152 states have call predecessors, (3060), 1530 states have call successors, (3060) [2021-11-07 01:33:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63815 states to 63815 states and 98310 transitions. [2021-11-07 01:33:40,971 INFO L78 Accepts]: Start accepts. Automaton has 63815 states and 98310 transitions. Word has length 43 [2021-11-07 01:33:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:40,972 INFO L470 AbstractCegarLoop]: Abstraction has 63815 states and 98310 transitions. [2021-11-07 01:33:40,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 63815 states and 98310 transitions. [2021-11-07 01:33:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:33:40,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:40,978 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:41,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:41,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:41,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:41,404 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:33:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash -635083038, now seen corresponding path program 1 times [2021-11-07 01:33:41,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:41,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503605014] [2021-11-07 01:33:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:41,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:41,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:41,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:41,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:33:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 4528 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:33:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:54,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:54,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:54,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503605014] [2021-11-07 01:33:54,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503605014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:54,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1514509221] [2021-11-07 01:33:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:54,806 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:54,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:33:54,808 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:33:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:33:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:59,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 4528 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:33:59,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:00,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:00,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1514509221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:00,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:00,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:00,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959008064] [2021-11-07 01:34:00,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:00,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:00,793 INFO L87 Difference]: Start difference. First operand 63815 states and 98310 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:02,443 INFO L93 Difference]: Finished difference Result 63815 states and 98310 transitions. [2021-11-07 01:34:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:34:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:02,663 INFO L225 Difference]: With dead ends: 63815 [2021-11-07 01:34:02,663 INFO L226 Difference]: Without dead ends: 63813 [2021-11-07 01:34:02,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63813 states. [2021-11-07 01:34:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63813 to 63813. [2021-11-07 01:34:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63813 states, 61919 states have (on average 1.5135580354979894) internal successors, (93718), 62516 states have internal predecessors, (93718), 1530 states have call successors, (1530), 360 states have call predecessors, (1530), 360 states have return successors, (3060), 1152 states have call predecessors, (3060), 1530 states have call successors, (3060) [2021-11-07 01:34:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63813 states to 63813 states and 98308 transitions. [2021-11-07 01:34:05,668 INFO L78 Accepts]: Start accepts. Automaton has 63813 states and 98308 transitions. Word has length 44 [2021-11-07 01:34:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:05,668 INFO L470 AbstractCegarLoop]: Abstraction has 63813 states and 98308 transitions. [2021-11-07 01:34:05,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 63813 states and 98308 transitions. [2021-11-07 01:34:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:34:05,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:05,674 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:05,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:05,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-07 01:34:06,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:06,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:34:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1787272451, now seen corresponding path program 1 times [2021-11-07 01:34:06,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:06,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389901693] [2021-11-07 01:34:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:06,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:06,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:06,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:06,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:34:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:19,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 4529 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:20,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:20,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:20,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389901693] [2021-11-07 01:34:20,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389901693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:20,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079039422] [2021-11-07 01:34:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:20,712 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:20,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:20,715 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:20,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:34:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:25,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 4529 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:25,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:26,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:26,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1079039422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:26,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:26,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:26,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375218141] [2021-11-07 01:34:26,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:26,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:26,876 INFO L87 Difference]: Start difference. First operand 63813 states and 98308 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:28,616 INFO L93 Difference]: Finished difference Result 63813 states and 98308 transitions. [2021-11-07 01:34:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:34:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:28,886 INFO L225 Difference]: With dead ends: 63813 [2021-11-07 01:34:28,886 INFO L226 Difference]: Without dead ends: 63774 [2021-11-07 01:34:28,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63774 states. [2021-11-07 01:34:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63774 to 63774. [2021-11-07 01:34:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63774 states, 61881 states have (on average 1.5136633215364974) internal successors, (93667), 62477 states have internal predecessors, (93667), 1530 states have call successors, (1530), 360 states have call predecessors, (1530), 360 states have return successors, (3060), 1152 states have call predecessors, (3060), 1530 states have call successors, (3060) [2021-11-07 01:34:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63774 states to 63774 states and 98257 transitions. [2021-11-07 01:34:31,990 INFO L78 Accepts]: Start accepts. Automaton has 63774 states and 98257 transitions. Word has length 45 [2021-11-07 01:34:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:31,990 INFO L470 AbstractCegarLoop]: Abstraction has 63774 states and 98257 transitions. [2021-11-07 01:34:31,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 63774 states and 98257 transitions. [2021-11-07 01:34:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 01:34:32,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:32,053 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:34:32,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:32,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:32,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:32,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:34:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 304832313, now seen corresponding path program 1 times [2021-11-07 01:34:32,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:32,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448769036] [2021-11-07 01:34:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:32,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:32,492 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:32,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:34:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:46,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 4783 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:46,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:34:47,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:34:48,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:48,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448769036] [2021-11-07 01:34:48,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448769036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:48,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [846775158] [2021-11-07 01:34:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:48,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:48,737 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:48,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:34:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:53,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 4783 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:53,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:54,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:55,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [846775158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:55,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:55,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:55,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386729497] [2021-11-07 01:34:55,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:55,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:55,418 INFO L87 Difference]: Start difference. First operand 63774 states and 98257 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:00,550 INFO L93 Difference]: Finished difference Result 181815 states and 281154 transitions. [2021-11-07 01:35:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:00,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 100 [2021-11-07 01:35:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:00,975 INFO L225 Difference]: With dead ends: 181815 [2021-11-07 01:35:00,975 INFO L226 Difference]: Without dead ends: 118077 [2021-11-07 01:35:01,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118077 states. [2021-11-07 01:35:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118077 to 117912. [2021-11-07 01:35:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117912 states, 114219 states have (on average 1.5216907869969094) internal successors, (173806), 115409 states have internal predecessors, (173806), 2970 states have call successors, (2970), 720 states have call predecessors, (2970), 720 states have return successors, (5940), 2214 states have call predecessors, (5940), 2970 states have call successors, (5940) [2021-11-07 01:35:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117912 states to 117912 states and 182716 transitions. [2021-11-07 01:35:07,810 INFO L78 Accepts]: Start accepts. Automaton has 117912 states and 182716 transitions. Word has length 100 [2021-11-07 01:35:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:07,810 INFO L470 AbstractCegarLoop]: Abstraction has 117912 states and 182716 transitions. [2021-11-07 01:35:07,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 117912 states and 182716 transitions. [2021-11-07 01:35:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 01:35:07,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:07,946 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:08,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:08,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:08,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:08,372 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2022302746, now seen corresponding path program 1 times [2021-11-07 01:35:08,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:08,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263326739] [2021-11-07 01:35:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:08,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:08,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:08,393 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:08,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:35:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:22,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 4873 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:22,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:35:23,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:35:24,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:24,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263326739] [2021-11-07 01:35:24,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263326739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:24,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1838248739] [2021-11-07 01:35:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:24,626 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:24,627 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:24,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:35:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:29,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 4873 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:29,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:35:30,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:35:31,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1838248739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:31,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:31,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:31,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485720902] [2021-11-07 01:35:31,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:31,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:31,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:31,078 INFO L87 Difference]: Start difference. First operand 117912 states and 182716 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:37,198 INFO L93 Difference]: Finished difference Result 199676 states and 309338 transitions. [2021-11-07 01:35:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:37,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 122 [2021-11-07 01:35:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:37,707 INFO L225 Difference]: With dead ends: 199676 [2021-11-07 01:35:37,707 INFO L226 Difference]: Without dead ends: 81798 [2021-11-07 01:35:37,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81798 states. [2021-11-07 01:35:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81798 to 81779. [2021-11-07 01:35:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81779 states, 79216 states have (on average 1.5215486770349425) internal successors, (120531), 80043 states have internal predecessors, (120531), 2060 states have call successors, (2060), 500 states have call predecessors, (2060), 500 states have return successors, (4040), 1535 states have call predecessors, (4040), 2060 states have call successors, (4040) [2021-11-07 01:35:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81779 states to 81779 states and 126631 transitions. [2021-11-07 01:35:41,572 INFO L78 Accepts]: Start accepts. Automaton has 81779 states and 126631 transitions. Word has length 122 [2021-11-07 01:35:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:41,572 INFO L470 AbstractCegarLoop]: Abstraction has 81779 states and 126631 transitions. [2021-11-07 01:35:41,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 81779 states and 126631 transitions. [2021-11-07 01:35:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 01:35:41,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:41,637 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:41,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:41,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:42,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:42,052 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -140007110, now seen corresponding path program 1 times [2021-11-07 01:35:42,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:42,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125442975] [2021-11-07 01:35:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:42,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:42,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:42,064 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:42,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:35:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:57,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 4877 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:57,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:35:58,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:35:59,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:59,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125442975] [2021-11-07 01:35:59,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125442975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:59,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789328704] [2021-11-07 01:35:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:59,353 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:59,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:59,367 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:59,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb58bf39-49c0-4fe9-b6b3-d3f176a733a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 01:36:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:05,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 4877 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:36:05,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:36:06,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:36:08,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789328704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:08,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:08,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 17 [2021-11-07 01:36:08,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962093805] [2021-11-07 01:36:08,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:36:08,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:36:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:36:08,343 INFO L87 Difference]: Start difference. First operand 81779 states and 126631 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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)