./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-43_2a-drivers--net--ethernet--3com--3c589_cs.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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:38,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:38,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:38,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:38,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:38,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:38,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:38,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:38,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:38,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:38,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:38,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:38,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:38,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:38,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:38,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:38,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:38,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:38,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:38,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:38,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:38,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:38,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:38,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:38,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:38,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:38,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:38,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:38,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:38,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:38,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:38,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:38,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:38,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:38,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:38,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:38,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:38,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:38,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:38,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:38,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:38,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:25:38,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:38,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:38,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:38,895 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:38,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:38,896 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:38,896 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:25:38,896 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:38,896 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:38,897 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:25:38,904 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:25:38,904 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:38,904 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:25:38,905 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:25:38,905 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:25:38,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:38,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:25:38,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:38,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:25:38,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:38,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:25:38,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:38,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:25:38,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:38,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:25:38,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:38,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:38,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:38,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:38,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:38,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:25:38,911 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:25:38,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:25:38,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:25:38,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:38,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:38,912 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 [2021-11-03 04:25:39,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:39,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:39,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:39,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:39,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:39,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-03 04:25:39,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/187337a80/b214ccea866e45bea90bd25535276d15/FLAG1ce244109 [2021-11-03 04:25:40,211 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:40,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-03 04:25:40,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/187337a80/b214ccea866e45bea90bd25535276d15/FLAG1ce244109 [2021-11-03 04:25:40,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/187337a80/b214ccea866e45bea90bd25535276d15 [2021-11-03 04:25:40,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:40,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:40,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:40,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:40,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:40,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:40" (1/1) ... [2021-11-03 04:25:40,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f49c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:40, skipping insertion in model container [2021-11-03 04:25:40,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:40" (1/1) ... [2021-11-03 04:25:40,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:40,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:42,492 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-03 04:25:42,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:42,597 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 04:25:42,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c540b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:42, skipping insertion in model container [2021-11-03 04:25:42,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:42,598 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:25:42,601 INFO L168 Benchmark]: Toolchain (without parser) took 1915.83 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 67.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:42,603 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:42,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1910.98 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 67.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:42,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1910.98 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 67.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6223]: 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:44,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:44,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:45,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:45,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:45,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:45,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:45,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:45,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:45,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:45,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:45,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:45,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:45,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:45,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:45,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:45,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:45,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:45,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:45,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:45,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:45,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:45,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:45,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:45,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:45,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:45,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:45,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:45,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:45,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:45,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:45,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:45,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:45,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:45,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:45,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:45,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:45,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:45,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:45,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:45,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:45,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:25:45,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:45,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:45,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:45,151 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:45,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:45,152 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:45,152 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:45,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:45,153 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:45,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:45,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:45,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:25:45,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:45,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:25:45,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:45,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:25:45,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:25:45,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:25:45,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:45,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:25:45,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:45,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:25:45,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:45,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:45,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:45,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:45,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:25:45,161 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:25:45,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:25:45,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:25:45,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:45,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:45,162 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 [2021-11-03 04:25:45,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:45,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:45,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:45,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:45,597 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:45,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-03 04:25:45,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/ff167628d/ef108aaa94d54c5998cf23b44b988ccd/FLAGad1c4839a [2021-11-03 04:25:46,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:46,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-03 04:25:46,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/ff167628d/ef108aaa94d54c5998cf23b44b988ccd/FLAGad1c4839a [2021-11-03 04:25:47,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/data/ff167628d/ef108aaa94d54c5998cf23b44b988ccd [2021-11-03 04:25:47,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:47,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:47,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:47,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:47,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:47,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:47" (1/1) ... [2021-11-03 04:25:47,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec44154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:47, skipping insertion in model container [2021-11-03 04:25:47,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:47" (1/1) ... [2021-11-03 04:25:47,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:47,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:49,119 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-03 04:25:49,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:49,242 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:25:49,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:49,671 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-03 04:25:49,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:49,738 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:25:50,107 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_7a26c0f5-ecee-4a27-b200-482a3a7a9817/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-03 04:25:50,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:50,318 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:25:50,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50 WrapperNode [2021-11-03 04:25:50,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:50,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:50,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:25:50,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:25:50,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:50,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:50,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:50,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:25:50,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:25:50,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:25:50,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:50,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:50,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:50,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:51,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:51,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:51,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:51,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:25:51,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:25:51,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:25:51,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:25:51,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (1/1) ... [2021-11-03 04:25:51,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:51,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:25:51,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:25:51,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:25:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:25:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:25:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:25:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:25:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:25:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:25:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:25:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:25:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 04:25:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:25:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:25:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:25:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:25:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:26:50,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:26:50,412 INFO L299 CfgBuilder]: Removed 2182 assume(true) statements. [2021-11-03 04:26:50,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:26:50 BoogieIcfgContainer [2021-11-03 04:26:50,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:26:50,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:26:50,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:26:50,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:26:50,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:25:47" (1/3) ... [2021-11-03 04:26:50,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5719de7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:26:50, skipping insertion in model container [2021-11-03 04:26:50,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:50" (2/3) ... [2021-11-03 04:26:50,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5719de7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:26:50, skipping insertion in model container [2021-11-03 04:26:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:26:50" (3/3) ... [2021-11-03 04:26:50,426 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-03 04:26:50,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:26:50,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-03 04:26:50,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:26:50,495 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 04:26:50,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 04:26:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 1923 states, 1914 states have (on average 1.3834900731452455) internal successors, (2648), 1922 states have internal predecessors, (2648), 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 04:26:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:26:50,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:50,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:50,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:26:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1801920152, now seen corresponding path program 1 times [2021-11-03 04:26:50,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:50,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372150282] [2021-11-03 04:26:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:50,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:50,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:50,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:50,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:26:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:53,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:26:53,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:53,565 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 04:26:53,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:53,866 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 04:26:53,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:53,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372150282] [2021-11-03 04:26:53,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372150282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:53,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:53,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:26:53,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404901463] [2021-11-03 04:26:53,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:26:53,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:26:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:26:53,895 INFO L87 Difference]: Start difference. First operand has 1923 states, 1914 states have (on average 1.3834900731452455) internal successors, (2648), 1922 states have internal predecessors, (2648), 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 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 04:26:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:54,007 INFO L93 Difference]: Finished difference Result 3842 states and 5291 transitions. [2021-11-03 04:26:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:26:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 75 [2021-11-03 04:26:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:54,033 INFO L225 Difference]: With dead ends: 3842 [2021-11-03 04:26:54,034 INFO L226 Difference]: Without dead ends: 1896 [2021-11-03 04:26:54,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 04:26:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2021-11-03 04:26:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1896. [2021-11-03 04:26:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1888 states have (on average 1.3606991525423728) internal successors, (2569), 1895 states have internal predecessors, (2569), 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 04:26:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2569 transitions. [2021-11-03 04:26:54,165 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2569 transitions. Word has length 75 [2021-11-03 04:26:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:54,165 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2569 transitions. [2021-11-03 04:26:54,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 04:26:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2569 transitions. [2021-11-03 04:26:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:26:54,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:54,172 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:54,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:54,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:54,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:26:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -582973410, now seen corresponding path program 1 times [2021-11-03 04:26:54,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:54,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135645569] [2021-11-03 04:26:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:54,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:54,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:54,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:54,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:26:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:57,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:26:57,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:57,344 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 04:26:57,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:57,632 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 04:26:57,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:57,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135645569] [2021-11-03 04:26:57,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135645569] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:57,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:57,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:57,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128299466] [2021-11-03 04:26:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:57,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:57,636 INFO L87 Difference]: Start difference. First operand 1896 states and 2569 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 04:26:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:57,751 INFO L93 Difference]: Finished difference Result 3770 states and 5117 transitions. [2021-11-03 04:26:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 75 [2021-11-03 04:26:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:57,763 INFO L225 Difference]: With dead ends: 3770 [2021-11-03 04:26:57,763 INFO L226 Difference]: Without dead ends: 1898 [2021-11-03 04:26:57,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 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 04:26:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-03 04:26:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1898. [2021-11-03 04:26:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1890 states have (on average 1.3603174603174604) internal successors, (2571), 1897 states have internal predecessors, (2571), 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 04:26:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2571 transitions. [2021-11-03 04:26:57,826 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2571 transitions. Word has length 75 [2021-11-03 04:26:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:57,826 INFO L470 AbstractCegarLoop]: Abstraction has 1898 states and 2571 transitions. [2021-11-03 04:26:57,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 04:26:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2571 transitions. [2021-11-03 04:26:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:26:57,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:57,831 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] [2021-11-03 04:26:57,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:58,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:58,055 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:26:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2110854846, now seen corresponding path program 1 times [2021-11-03 04:26:58,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:58,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295397753] [2021-11-03 04:26:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:58,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:58,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:58,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:58,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:27:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:00,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:27:00,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:01,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:01,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:01,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295397753] [2021-11-03 04:27:01,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295397753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:27:01,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1200360854] [2021-11-03 04:27:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:01,705 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:27:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:27:01,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:27:01,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 04:27:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:03,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:27:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:03,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:03,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1200360854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:03,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:27:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:27:03,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383505513] [2021-11-03 04:27:03,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:03,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:03,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:03,794 INFO L87 Difference]: Start difference. First operand 1898 states and 2571 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 04:27:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:04,717 INFO L93 Difference]: Finished difference Result 6903 states and 9366 transitions. [2021-11-03 04:27:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:27:04,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 77 [2021-11-03 04:27:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:04,760 INFO L225 Difference]: With dead ends: 6903 [2021-11-03 04:27:04,761 INFO L226 Difference]: Without dead ends: 5034 [2021-11-03 04:27:04,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2021-11-03 04:27:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5010. [2021-11-03 04:27:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5002 states have (on average 1.3610555777688924) internal successors, (6808), 5009 states have internal predecessors, (6808), 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 04:27:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 6808 transitions. [2021-11-03 04:27:04,997 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 6808 transitions. Word has length 77 [2021-11-03 04:27:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:05,001 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 6808 transitions. [2021-11-03 04:27:05,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 04:27:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 6808 transitions. [2021-11-03 04:27:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 04:27:05,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:05,009 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] [2021-11-03 04:27:05,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:05,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:05,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:05,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:27:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2055383208, now seen corresponding path program 1 times [2021-11-03 04:27:05,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:05,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893610529] [2021-11-03 04:27:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:05,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:05,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:05,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:05,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:27:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:08,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:27:08,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:08,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:08,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:08,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893610529] [2021-11-03 04:27:08,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893610529] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:27:08,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797646735] [2021-11-03 04:27:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:08,964 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:27:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:27:08,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:27:08,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 04:27:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:10,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:27:10,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:10,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:11,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797646735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:11,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:27:11,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:27:11,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015729246] [2021-11-03 04:27:11,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:11,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:11,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:11,201 INFO L87 Difference]: Start difference. First operand 5010 states and 6808 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:12,412 INFO L93 Difference]: Finished difference Result 18173 states and 24686 transitions. [2021-11-03 04:27:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:27:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-03 04:27:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:12,517 INFO L225 Difference]: With dead ends: 18173 [2021-11-03 04:27:12,517 INFO L226 Difference]: Without dead ends: 13192 [2021-11-03 04:27:12,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13192 states. [2021-11-03 04:27:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13192 to 13168. [2021-11-03 04:27:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13168 states, 13160 states have (on average 1.3588905775075988) internal successors, (17883), 13167 states have internal predecessors, (17883), 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 04:27:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13168 states to 13168 states and 17883 transitions. [2021-11-03 04:27:13,200 INFO L78 Accepts]: Start accepts. Automaton has 13168 states and 17883 transitions. Word has length 78 [2021-11-03 04:27:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:13,200 INFO L470 AbstractCegarLoop]: Abstraction has 13168 states and 17883 transitions. [2021-11-03 04:27:13,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 13168 states and 17883 transitions. [2021-11-03 04:27:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:27:13,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:13,206 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] [2021-11-03 04:27:13,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:13,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:13,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:13,626 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:27:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1540277718, now seen corresponding path program 1 times [2021-11-03 04:27:13,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:13,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57675944] [2021-11-03 04:27:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:13,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:13,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:13,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:27:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:16,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:27:16,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:16,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:17,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:17,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57675944] [2021-11-03 04:27:17,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57675944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:27:17,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1171702594] [2021-11-03 04:27:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:17,088 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:27:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:27:17,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:27:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 04:27:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:18,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:27:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:18,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1171702594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:19,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:27:19,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:27:19,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453216927] [2021-11-03 04:27:19,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:19,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:19,130 INFO L87 Difference]: Start difference. First operand 13168 states and 17883 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 04:27:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:20,439 INFO L93 Difference]: Finished difference Result 47277 states and 64114 transitions. [2021-11-03 04:27:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:27:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 04:27:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:20,564 INFO L225 Difference]: With dead ends: 47277 [2021-11-03 04:27:20,564 INFO L226 Difference]: Without dead ends: 34138 [2021-11-03 04:27:20,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34138 states. [2021-11-03 04:27:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34138 to 34114. [2021-11-03 04:27:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34114 states, 34106 states have (on average 1.3550108485310504) internal successors, (46214), 34113 states have internal predecessors, (46214), 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 04:27:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34114 states to 34114 states and 46214 transitions. [2021-11-03 04:27:22,525 INFO L78 Accepts]: Start accepts. Automaton has 34114 states and 46214 transitions. Word has length 79 [2021-11-03 04:27:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:22,532 INFO L470 AbstractCegarLoop]: Abstraction has 34114 states and 46214 transitions. [2021-11-03 04:27:22,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 04:27:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 34114 states and 46214 transitions. [2021-11-03 04:27:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 04:27:22,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:22,536 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] [2021-11-03 04:27:22,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:22,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:22,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:22,948 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:27:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1731564400, now seen corresponding path program 1 times [2021-11-03 04:27:22,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:22,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185406087] [2021-11-03 04:27:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:22,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:22,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:22,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:27:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:25,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:27:25,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:26,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:27:26,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:26,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185406087] [2021-11-03 04:27:26,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185406087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:27:26,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [856884893] [2021-11-03 04:27:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:26,701 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:27:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:27:26,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:27:26,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 04:27:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:28,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:27:28,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:28,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:29,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [856884893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:29,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:27:29,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:27:29,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828963123] [2021-11-03 04:27:29,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:29,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:29,044 INFO L87 Difference]: Start difference. First operand 34114 states and 46214 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 04:27:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:31,874 INFO L93 Difference]: Finished difference Result 120485 states and 162838 transitions. [2021-11-03 04:27:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:27:31,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 80 [2021-11-03 04:27:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:32,162 INFO L225 Difference]: With dead ends: 120485 [2021-11-03 04:27:32,162 INFO L226 Difference]: Without dead ends: 86400 [2021-11-03 04:27:32,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86400 states. [2021-11-03 04:27:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86400 to 86376. [2021-11-03 04:27:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86376 states, 86368 states have (on average 1.349400240829937) internal successors, (116545), 86375 states have internal predecessors, (116545), 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 04:27:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86376 states to 86376 states and 116545 transitions. [2021-11-03 04:27:36,252 INFO L78 Accepts]: Start accepts. Automaton has 86376 states and 116545 transitions. Word has length 80 [2021-11-03 04:27:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:36,252 INFO L470 AbstractCegarLoop]: Abstraction has 86376 states and 116545 transitions. [2021-11-03 04:27:36,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 04:27:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 86376 states and 116545 transitions. [2021-11-03 04:27:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-03 04:27:36,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:36,326 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:36,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-03 04:27:36,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:36,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:36,741 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:27:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:36,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2093171676, now seen corresponding path program 1 times [2021-11-03 04:27:36,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:36,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240035525] [2021-11-03 04:27:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:36,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:36,747 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:36,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:27:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:40,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1995 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:27:40,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:27:40,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:27:41,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:41,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240035525] [2021-11-03 04:27:41,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240035525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:27:41,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141235587] [2021-11-03 04:27:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:41,605 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:27:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:27:41,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:27:41,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 04:27:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:43,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1995 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:27:43,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:44,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:27:44,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141235587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:44,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:27:44,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:27:44,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565941025] [2021-11-03 04:27:44,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:27:44,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:27:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:27:44,559 INFO L87 Difference]: Start difference. First operand 86376 states and 116545 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 04:27:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:49,223 INFO L93 Difference]: Finished difference Result 218747 states and 296788 transitions. [2021-11-03 04:27:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:27:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 04:27:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:49,602 INFO L225 Difference]: With dead ends: 218747 [2021-11-03 04:27:49,602 INFO L226 Difference]: Without dead ends: 132400 [2021-11-03 04:27:49,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:27:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132400 states. [2021-11-03 04:27:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132400 to 130926. [2021-11-03 04:27:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130926 states, 130918 states have (on average 1.362700316228479) internal successors, (178402), 130925 states have internal predecessors, (178402), 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 04:27:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130926 states to 130926 states and 178402 transitions. [2021-11-03 04:27:55,450 INFO L78 Accepts]: Start accepts. Automaton has 130926 states and 178402 transitions. Word has length 143 [2021-11-03 04:27:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:55,450 INFO L470 AbstractCegarLoop]: Abstraction has 130926 states and 178402 transitions. [2021-11-03 04:27:55,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 04:27:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 130926 states and 178402 transitions. [2021-11-03 04:27:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-03 04:27:55,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:55,497 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:55,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 04:27:55,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-03 04:27:55,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:27:55,907 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 04:27:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1749122262, now seen corresponding path program 1 times [2021-11-03 04:27:55,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:55,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302101604] [2021-11-03 04:27:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:55,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:55,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:55,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:27:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:59,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:27:59,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-03 04:28:00,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-03 04:28:01,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:01,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302101604] [2021-11-03 04:28:01,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302101604] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:28:01,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [969859847] [2021-11-03 04:28:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:01,150 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:28:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:28:01,151 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:28:01,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a26c0f5-ecee-4a27-b200-482a3a7a9817/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 04:28:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:03,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:28:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:28:03,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:28:04,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [969859847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:04,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:28:04,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:28:04,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144108056] [2021-11-03 04:28:04,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:28:04,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:28:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:28:04,570 INFO L87 Difference]: Start difference. First operand 130926 states and 178402 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 04:28:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:14,141 INFO L93 Difference]: Finished difference Result 370445 states and 505176 transitions. [2021-11-03 04:28:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:28:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 196 [2021-11-03 04:28:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:14,867 INFO L225 Difference]: With dead ends: 370445 [2021-11-03 04:28:14,867 INFO L226 Difference]: Without dead ends: 239548 [2021-11-03 04:28:15,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:28:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239548 states.