./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03d5d1a576959110e79c00ca2825754bce7439905d85699b470a90adbbee10ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:50:17,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:50:17,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:50:17,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:50:17,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:50:17,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:50:17,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:50:17,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:50:17,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:50:17,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:50:17,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:50:17,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:50:17,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:50:17,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:50:17,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:50:17,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:50:17,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:50:17,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:50:17,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:50:17,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:50:17,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:50:17,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:50:17,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:50:17,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:50:17,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:50:17,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:50:17,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:50:17,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:50:17,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:50:17,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:50:17,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:50:17,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:50:17,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:50:17,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:50:17,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:50:17,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:50:17,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:50:17,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:50:17,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:50:17,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:50:17,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:50:17,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:50:17,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:50:17,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:50:17,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:50:17,914 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:50:17,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:50:17,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:50:17,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:50:17,915 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:50:17,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:50:17,915 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:50:17,917 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:50:17,917 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:50:17,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:50:17,918 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:50:17,918 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:50:17,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:50:17,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:50:17,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:50:17,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:50:17,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:50:17,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:50:17,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:50:17,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:50:17,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:50:17,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:50:17,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:50:17,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:50:17,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:17,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:50:17,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:50:17,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:50:17,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:50:17,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:50:17,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:50:17,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:50:17,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:50:17,926 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d5d1a576959110e79c00ca2825754bce7439905d85699b470a90adbbee10ad [2021-11-03 04:50:18,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:50:18,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:50:18,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:50:18,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:50:18,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:50:18,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-11-03 04:50:18,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/d7d9a16ca/89dbdad38e4c45beae3d903b3be396c1/FLAG0bf75796a [2021-11-03 04:50:19,234 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:50:19,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-11-03 04:50:19,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/d7d9a16ca/89dbdad38e4c45beae3d903b3be396c1/FLAG0bf75796a [2021-11-03 04:50:19,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/d7d9a16ca/89dbdad38e4c45beae3d903b3be396c1 [2021-11-03 04:50:19,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:50:19,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:50:19,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:19,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:50:19,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:50:19,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:19" (1/1) ... [2021-11-03 04:50:19,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7caba2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:19, skipping insertion in model container [2021-11-03 04:50:19,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:19" (1/1) ... [2021-11-03 04:50:19,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:50:19,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:50:20,702 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,703 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,752 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,805 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,806 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,809 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,946 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:50:20,995 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i[164960,164973] [2021-11-03 04:50:21,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:21,056 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:50:21,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74bc234e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:21, skipping insertion in model container [2021-11-03 04:50:21,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:21,057 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:50:21,060 INFO L168 Benchmark]: Toolchain (without parser) took 1276.59 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 63.6 MB in the end (delta: 16.9 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:50:21,061 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:50:21,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1274.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 63.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:50:21,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1274.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 63.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4415]: 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03d5d1a576959110e79c00ca2825754bce7439905d85699b470a90adbbee10ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:50:23,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:50:23,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:50:23,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:50:23,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:50:23,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:50:23,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:50:23,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:50:23,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:50:23,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:50:23,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:50:23,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:50:23,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:50:23,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:50:23,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:50:23,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:50:23,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:50:23,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:50:23,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:50:23,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:50:23,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:50:23,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:50:23,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:50:23,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:50:23,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:50:23,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:50:23,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:50:23,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:50:23,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:50:23,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:50:23,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:50:23,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:50:23,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:50:23,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:50:23,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:50:23,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:50:23,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:50:23,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:50:23,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:50:23,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:50:23,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:50:23,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:50:23,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:50:23,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:50:23,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:50:23,594 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:50:23,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:50:23,594 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:50:23,594 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:50:23,595 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:50:23,595 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:50:23,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:50:23,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:50:23,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:50:23,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:50:23,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:50:23,599 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:50:23,599 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:50:23,599 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:50:23,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:50:23,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:50:23,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:50:23,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:50:23,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:50:23,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:50:23,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:23,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:50:23,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:50:23,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:50:23,602 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:50:23,602 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:50:23,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:50:23,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:50:23,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:50:23,603 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d5d1a576959110e79c00ca2825754bce7439905d85699b470a90adbbee10ad [2021-11-03 04:50:24,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:50:24,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:50:24,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:50:24,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:50:24,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:50:24,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-11-03 04:50:24,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/355a31a2c/2b02aeb89a354d44aa8fbc13e942ee7c/FLAG0e1c92dc1 [2021-11-03 04:50:25,100 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:50:25,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-11-03 04:50:25,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/355a31a2c/2b02aeb89a354d44aa8fbc13e942ee7c/FLAG0e1c92dc1 [2021-11-03 04:50:25,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/data/355a31a2c/2b02aeb89a354d44aa8fbc13e942ee7c [2021-11-03 04:50:25,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:50:25,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:50:25,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:25,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:50:25,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:50:25,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:25" (1/1) ... [2021-11-03 04:50:25,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3450b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:25, skipping insertion in model container [2021-11-03 04:50:25,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:50:25" (1/1) ... [2021-11-03 04:50:25,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:50:25,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:50:27,110 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i[164960,164973] [2021-11-03 04:50:27,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:27,186 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:50:27,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:50:27,560 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i[164960,164973] [2021-11-03 04:50:27,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:27,596 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:50:28,209 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_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i[164960,164973] [2021-11-03 04:50:28,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:50:28,336 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:50:28,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28 WrapperNode [2021-11-03 04:50:28,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:50:28,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:50:28,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:50:28,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:50:28,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:28,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:28,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:50:28,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:50:28,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:50:28,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:50:28,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:28,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:28,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:28,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:28,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:29,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:29,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:29,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:50:29,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:50:29,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:50:29,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:50:29,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (1/1) ... [2021-11-03 04:50:29,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:29,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:50:29,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:50:29,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:50:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:50:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:50:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:50:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:50:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:50:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:50:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:51:33,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:51:33,320 INFO L299 CfgBuilder]: Removed 1540 assume(true) statements. [2021-11-03 04:51:33,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:51:33 BoogieIcfgContainer [2021-11-03 04:51:33,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:51:33,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:51:33,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:51:33,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:51:33,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:50:25" (1/3) ... [2021-11-03 04:51:33,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3799f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:51:33, skipping insertion in model container [2021-11-03 04:51:33,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:50:28" (2/3) ... [2021-11-03 04:51:33,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3799f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:51:33, skipping insertion in model container [2021-11-03 04:51:33,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:51:33" (3/3) ... [2021-11-03 04:51:33,335 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--md-cluster.ko-entry_point.cil.out.i [2021-11-03 04:51:33,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:51:33,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 04:51:33,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:51:33,410 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:51:33,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 04:51:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 1158 states, 1155 states have (on average 1.302164502164502) internal successors, (1504), 1157 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:51:33,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:33,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:33,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:51:33,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash -522771162, now seen corresponding path program 1 times [2021-11-03 04:51:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:33,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559877565] [2021-11-03 04:51:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:33,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:33,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:33,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:51:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:34,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:51:34,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:35,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:35,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:35,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559877565] [2021-11-03 04:51:35,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559877565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:35,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:35,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:51:35,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374213445] [2021-11-03 04:51:35,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:51:35,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:51:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:51:35,386 INFO L87 Difference]: Start difference. First operand has 1158 states, 1155 states have (on average 1.302164502164502) internal successors, (1504), 1157 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:35,487 INFO L93 Difference]: Finished difference Result 2312 states and 3003 transitions. [2021-11-03 04:51:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:51:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 04:51:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:35,517 INFO L225 Difference]: With dead ends: 2312 [2021-11-03 04:51:35,518 INFO L226 Difference]: Without dead ends: 1150 [2021-11-03 04:51:35,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:51:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-11-03 04:51:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2021-11-03 04:51:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1148 states have (on average 1.2709059233449478) internal successors, (1459), 1149 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1459 transitions. [2021-11-03 04:51:35,637 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1459 transitions. Word has length 58 [2021-11-03 04:51:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:35,638 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1459 transitions. [2021-11-03 04:51:35,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1459 transitions. [2021-11-03 04:51:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:51:35,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:35,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:35,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:35,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:35,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:51:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1517660244, now seen corresponding path program 1 times [2021-11-03 04:51:35,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:35,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157863899] [2021-11-03 04:51:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:35,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:35,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:35,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:35,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:51:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:37,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:51:37,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:37,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:37,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:37,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157863899] [2021-11-03 04:51:37,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157863899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:37,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:37,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:51:37,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040992237] [2021-11-03 04:51:37,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:51:37,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:51:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:37,585 INFO L87 Difference]: Start difference. First operand 1150 states and 1459 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:38,383 INFO L93 Difference]: Finished difference Result 2300 states and 2933 transitions. [2021-11-03 04:51:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:51:38,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 04:51:38,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:38,397 INFO L225 Difference]: With dead ends: 2300 [2021-11-03 04:51:38,398 INFO L226 Difference]: Without dead ends: 1166 [2021-11-03 04:51:38,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-11-03 04:51:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2021-11-03 04:51:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.2671821305841924) internal successors, (1475), 1165 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1475 transitions. [2021-11-03 04:51:38,471 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1475 transitions. Word has length 58 [2021-11-03 04:51:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:38,472 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1475 transitions. [2021-11-03 04:51:38,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1475 transitions. [2021-11-03 04:51:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:51:38,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:38,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:38,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:38,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:38,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:51:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:38,680 INFO L85 PathProgramCache]: Analyzing trace with hash -552840397, now seen corresponding path program 1 times [2021-11-03 04:51:38,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:38,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874000514] [2021-11-03 04:51:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:38,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:38,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:38,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:51:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:51:39,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:51:40,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:51:40,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:40,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874000514] [2021-11-03 04:51:40,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874000514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:51:40,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1398292452] [2021-11-03 04:51:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:40,684 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:51:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:51:40,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:51:40,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 04:51:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:51:41,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 04:51:42,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 04:51:42,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1398292452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:42,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:51:42,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4, 4] total 7 [2021-11-03 04:51:42,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259394347] [2021-11-03 04:51:42,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:51:42,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:51:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:51:42,696 INFO L87 Difference]: Start difference. First operand 1166 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:42,819 INFO L93 Difference]: Finished difference Result 3377 states and 4283 transitions. [2021-11-03 04:51:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:51:42,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 69 [2021-11-03 04:51:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:42,836 INFO L225 Difference]: With dead ends: 3377 [2021-11-03 04:51:42,836 INFO L226 Difference]: Without dead ends: 2267 [2021-11-03 04:51:42,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:51:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2021-11-03 04:51:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2265. [2021-11-03 04:51:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 2263 states have (on average 1.268669907202828) internal successors, (2871), 2264 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 2871 transitions. [2021-11-03 04:51:42,940 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 2871 transitions. Word has length 69 [2021-11-03 04:51:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:42,941 INFO L470 AbstractCegarLoop]: Abstraction has 2265 states and 2871 transitions. [2021-11-03 04:51:42,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 2871 transitions. [2021-11-03 04:51:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 04:51:42,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:42,948 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:42,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:43,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:43,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:51:43,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:51:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1438408498, now seen corresponding path program 1 times [2021-11-03 04:51:43,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:43,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883754473] [2021-11-03 04:51:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:43,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:43,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:43,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:51:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:44,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:51:44,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 04:51:44,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 04:51:45,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:45,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883754473] [2021-11-03 04:51:45,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883754473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:51:45,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [965118119] [2021-11-03 04:51:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:45,423 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:51:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:51:45,440 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:51:45,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 04:51:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:46,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:51:46,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 04:51:46,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 04:51:47,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [965118119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:47,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:51:47,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-11-03 04:51:47,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743053247] [2021-11-03 04:51:47,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:51:47,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:51:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:51:47,033 INFO L87 Difference]: Start difference. First operand 2265 states and 2871 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:58,133 INFO L93 Difference]: Finished difference Result 4566 states and 5806 transitions. [2021-11-03 04:51:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:51:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2021-11-03 04:51:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:58,151 INFO L225 Difference]: With dead ends: 4566 [2021-11-03 04:51:58,151 INFO L226 Difference]: Without dead ends: 2360 [2021-11-03 04:51:58,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:51:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-11-03 04:51:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2345. [2021-11-03 04:51:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2343 states have (on average 1.2757148954332054) internal successors, (2989), 2344 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2989 transitions. [2021-11-03 04:51:58,271 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2989 transitions. Word has length 91 [2021-11-03 04:51:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:58,272 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 2989 transitions. [2021-11-03 04:51:58,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2989 transitions. [2021-11-03 04:51:58,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 04:51:58,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:58,277 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-03 04:51:58,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:58,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:58,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:51:58,700 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:51:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1749852443, now seen corresponding path program 1 times [2021-11-03 04:51:58,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:58,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415008559] [2021-11-03 04:51:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:58,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:58,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:58,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:58,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:51:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:00,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:52:00,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-03 04:52:00,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-03 04:52:01,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:01,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415008559] [2021-11-03 04:52:01,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415008559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:52:01,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1090431599] [2021-11-03 04:52:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:01,119 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:52:01,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:52:01,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:52:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 04:52:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:03,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:52:03,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-03 04:52:03,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-03 04:52:03,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1090431599] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:52:03,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384476090] [2021-11-03 04:52:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:03,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:52:03,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:52:03,886 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:52:03,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 04:52:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:04,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:52:04,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-03 04:52:05,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-03 04:52:05,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384476090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:52:05,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:52:05,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-03 04:52:05,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158269700] [2021-11-03 04:52:05,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:52:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:52:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:52:05,715 INFO L87 Difference]: Start difference. First operand 2345 states and 2989 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:52:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:07,268 INFO L93 Difference]: Finished difference Result 4701 states and 6019 transitions. [2021-11-03 04:52:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:52:07,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-03 04:52:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:07,286 INFO L225 Difference]: With dead ends: 4701 [2021-11-03 04:52:07,286 INFO L226 Difference]: Without dead ends: 2377 [2021-11-03 04:52:07,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:52:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2021-11-03 04:52:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2377. [2021-11-03 04:52:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2375 states have (on average 1.272) internal successors, (3021), 2376 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:52:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3021 transitions. [2021-11-03 04:52:07,385 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3021 transitions. Word has length 115 [2021-11-03 04:52:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:07,387 INFO L470 AbstractCegarLoop]: Abstraction has 2377 states and 3021 transitions. [2021-11-03 04:52:07,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:52:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3021 transitions. [2021-11-03 04:52:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 04:52:07,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:07,396 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2021-11-03 04:52:07,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:52:07,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:07,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-03 04:52:07,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:52:08,000 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:52:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1532900017, now seen corresponding path program 2 times [2021-11-03 04:52:08,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:08,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454574437] [2021-11-03 04:52:08,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:52:08,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:08,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:08,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:54:26,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:54:26,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:54:26,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:54:26,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:54:27,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:54:28,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:28,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454574437] [2021-11-03 04:54:28,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454574437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:54:28,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [140977246] [2021-11-03 04:54:28,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:54:28,108 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:54:28,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:54:28,110 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:54:28,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 04:59:50,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:59:50,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:59:51,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:59:51,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:59:52,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:59:52,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [140977246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:59:52,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617387320] [2021-11-03 04:59:52,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:59:52,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:59:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:59:52,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:59:52,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 05:02:32,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:02:32,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:02:32,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:02:32,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-03 05:02:33,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-03 05:02:33,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617387320] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 05:02:33,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-11-03 05:02:33,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 7, 7, 6] total 19 [2021-11-03 05:02:33,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576305280] [2021-11-03 05:02:33,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:02:33,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:02:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:02:33,519 INFO L87 Difference]: Start difference. First operand 2377 states and 3021 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:34,060 INFO L93 Difference]: Finished difference Result 6962 states and 8867 transitions. [2021-11-03 05:02:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:02:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 137 [2021-11-03 05:02:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:34,095 INFO L225 Difference]: With dead ends: 6962 [2021-11-03 05:02:34,095 INFO L226 Difference]: Without dead ends: 5810 [2021-11-03 05:02:34,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:02:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-11-03 05:02:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 2380. [2021-11-03 05:02:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.2716568544995794) internal successors, (3024), 2379 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3024 transitions. [2021-11-03 05:02:34,214 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3024 transitions. Word has length 137 [2021-11-03 05:02:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:34,215 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3024 transitions. [2021-11-03 05:02:34,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3024 transitions. [2021-11-03 05:02:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 05:02:34,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:34,219 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2021-11-03 05:02:34,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:34,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:34,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-03 05:02:34,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:34,836 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:34,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:34,836 INFO L85 PathProgramCache]: Analyzing trace with hash -946094003, now seen corresponding path program 1 times [2021-11-03 05:02:34,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:34,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719525868] [2021-11-03 05:02:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:34,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:34,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:34,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:34,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:02:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:36,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:02:36,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:02:36,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:02:37,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:37,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719525868] [2021-11-03 05:02:37,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719525868] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:37,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1828313488] [2021-11-03 05:02:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:37,651 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:37,653 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:37,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:02:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:39,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:02:39,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-03 05:02:39,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-03 05:02:39,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1828313488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:39,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:02:39,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:02:39,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240505837] [2021-11-03 05:02:39,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:02:39,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:39,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:02:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:02:39,595 INFO L87 Difference]: Start difference. First operand 2380 states and 3024 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:39,785 INFO L93 Difference]: Finished difference Result 6010 states and 7676 transitions. [2021-11-03 05:02:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:02:39,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 137 [2021-11-03 05:02:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:39,808 INFO L225 Difference]: With dead ends: 6010 [2021-11-03 05:02:39,808 INFO L226 Difference]: Without dead ends: 3711 [2021-11-03 05:02:39,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:02:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-11-03 05:02:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 2382. [2021-11-03 05:02:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.2714285714285714) internal successors, (3026), 2381 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3026 transitions. [2021-11-03 05:02:39,929 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3026 transitions. Word has length 137 [2021-11-03 05:02:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:39,930 INFO L470 AbstractCegarLoop]: Abstraction has 2382 states and 3026 transitions. [2021-11-03 05:02:39,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3026 transitions. [2021-11-03 05:02:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-03 05:02:39,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:39,933 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:39,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:40,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:40,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:40,350 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1570095109, now seen corresponding path program 1 times [2021-11-03 05:02:40,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:40,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880353428] [2021-11-03 05:02:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:40,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:40,359 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:40,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:02:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:41,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:02:41,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:02:42,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:02:43,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:43,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880353428] [2021-11-03 05:02:43,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880353428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:43,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [286596510] [2021-11-03 05:02:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:43,381 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:43,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:43,399 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:43,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:02:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:45,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:02:45,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:02:46,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:02:46,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [286596510] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:46,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73523840] [2021-11-03 05:02:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:46,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:46,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:02:46,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:02:46,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 05:02:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:02:48,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-03 05:02:48,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-03 05:02:48,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73523840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:48,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:02:48,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 5, 5] total 15 [2021-11-03 05:02:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164381583] [2021-11-03 05:02:48,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 05:02:48,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 05:02:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:02:48,883 INFO L87 Difference]: Start difference. First operand 2382 states and 3026 transitions. Second operand has 15 states, 15 states have (on average 10.2) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:57,573 INFO L93 Difference]: Finished difference Result 4802 states and 6150 transitions. [2021-11-03 05:02:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:02:57,574 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.2) internal successors, (153), 15 states have internal predecessors, (153), 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 143 [2021-11-03 05:02:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:57,584 INFO L225 Difference]: With dead ends: 4802 [2021-11-03 05:02:57,584 INFO L226 Difference]: Without dead ends: 2444 [2021-11-03 05:02:57,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:02:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2021-11-03 05:02:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2444. [2021-11-03 05:02:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2442 states have (on average 1.2645372645372646) internal successors, (3088), 2443 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3088 transitions. [2021-11-03 05:02:57,691 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3088 transitions. Word has length 143 [2021-11-03 05:02:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:57,691 INFO L470 AbstractCegarLoop]: Abstraction has 2444 states and 3088 transitions. [2021-11-03 05:02:57,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.2) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3088 transitions. [2021-11-03 05:02:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 05:02:57,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:57,695 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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] [2021-11-03 05:02:57,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:57,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:58,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 05:02:58,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:58,312 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash -592084933, now seen corresponding path program 2 times [2021-11-03 05:02:58,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:58,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079440326] [2021-11-03 05:02:58,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:02:58,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:58,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:58,327 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:58,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2c1378-b0d4-40fb-b6bb-3f8eff0c0e36/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process