./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--hippi--rrunner.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:18:19,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:18:19,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:18:20,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:18:20,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:18:20,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:18:20,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:18:20,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:18:20,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:18:20,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:18:20,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:18:20,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:18:20,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:18:20,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:18:20,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:18:20,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:18:20,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:18:20,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:18:20,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:18:20,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:18:20,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:18:20,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:18:20,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:18:20,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:18:20,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:18:20,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:18:20,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:18:20,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:18:20,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:18:20,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:18:20,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:18:20,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:18:20,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:18:20,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:18:20,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:18:20,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:18:20,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:18:20,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:18:20,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:18:20,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:18:20,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:18:20,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:18:20,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:18:20,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:18:20,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:18:20,158 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:18:20,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:18:20,158 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:18:20,158 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:18:20,159 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:18:20,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:18:20,159 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:18:20,159 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:18:20,159 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:18:20,160 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:18:20,160 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:18:20,160 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:18:20,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:18:20,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:18:20,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:18:20,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:18:20,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:18:20,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:18:20,162 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:18:20,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:18:20,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:18:20,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:18:20,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:18:20,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:18:20,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:18:20,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:18:20,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:18:20,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:18:20,165 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:18:20,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:18:20,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:18:20,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:18:20,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:18:20,166 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_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2021-11-07 02:18:20,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:18:20,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:18:20,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:18:20,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:18:20,524 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:18:20,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-07 02:18:20,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/0dca9c7e2/29f4452715fd4b238dc2c09f1f73f3f1/FLAG18f650906 [2021-11-07 02:18:21,703 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:18:21,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-07 02:18:21,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/0dca9c7e2/29f4452715fd4b238dc2c09f1f73f3f1/FLAG18f650906 [2021-11-07 02:18:21,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/0dca9c7e2/29f4452715fd4b238dc2c09f1f73f3f1 [2021-11-07 02:18:21,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:18:21,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:18:21,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:18:21,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:18:22,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:18:22,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:21" (1/1) ... [2021-11-07 02:18:22,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5a1a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:22, skipping insertion in model container [2021-11-07 02:18:22,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:21" (1/1) ... [2021-11-07 02:18:22,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:18:22,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:18:24,205 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_817ef940-f3e7-4e65-8756-352a4ce280e4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2021-11-07 02:18:24,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:18:24,325 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:18:24,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a741d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:24, skipping insertion in model container [2021-11-07 02:18:24,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:18:24,326 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:18:24,329 INFO L168 Benchmark]: Toolchain (without parser) took 2333.90 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 70.9 MB in the beginning and 75.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:18:24,330 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:18:24,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2329.86 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 70.7 MB in the beginning and 75.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:18:24,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2329.86 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 70.7 MB in the beginning and 75.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7053]: 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_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:18:27,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:18:27,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:18:27,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:18:27,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:18:27,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:18:27,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:18:27,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:18:27,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:18:27,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:18:27,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:18:27,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:18:27,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:18:27,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:18:27,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:18:27,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:18:27,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:18:27,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:18:27,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:18:27,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:18:27,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:18:27,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:18:27,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:18:27,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:18:27,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:18:27,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:18:27,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:18:27,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:18:27,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:18:27,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:18:27,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:18:27,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:18:27,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:18:27,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:18:27,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:18:27,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:18:27,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:18:27,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:18:27,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:18:27,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:18:27,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:18:27,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:18:27,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:18:27,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:18:27,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:18:27,347 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:18:27,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:18:27,348 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:18:27,348 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:18:27,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:18:27,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:18:27,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:18:27,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:18:27,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:18:27,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:18:27,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:18:27,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:18:27,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:18:27,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:18:27,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:18:27,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:18:27,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:18:27,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:18:27,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:18:27,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:18:27,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:18:27,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:18:27,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:18:27,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:18:27,356 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:18:27,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:27,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:18:27,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:18:27,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:18:27,358 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_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed28fe99994604a1173e3d4f71ab5b1542eccb5293571b04f5dd99c12a84c046 [2021-11-07 02:18:27,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:18:27,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:18:27,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:18:27,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:18:27,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:18:27,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-07 02:18:27,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/075061439/646f5be4b3d243318d7143b977591121/FLAG2eb1c8479 [2021-11-07 02:18:29,040 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:18:29,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-07 02:18:29,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/075061439/646f5be4b3d243318d7143b977591121/FLAG2eb1c8479 [2021-11-07 02:18:29,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/data/075061439/646f5be4b3d243318d7143b977591121 [2021-11-07 02:18:29,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:18:29,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:18:29,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:18:29,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:18:29,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:18:29,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:29" (1/1) ... [2021-11-07 02:18:29,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b9946c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:29, skipping insertion in model container [2021-11-07 02:18:29,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:29" (1/1) ... [2021-11-07 02:18:29,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:18:29,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:18:31,886 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_817ef940-f3e7-4e65-8756-352a4ce280e4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2021-11-07 02:18:31,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:18:32,035 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:18:32,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:18:32,600 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_817ef940-f3e7-4e65-8756-352a4ce280e4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2021-11-07 02:18:32,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:18:32,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:18:33,048 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_817ef940-f3e7-4e65-8756-352a4ce280e4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i[275280,275293] [2021-11-07 02:18:33,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:18:33,250 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:18:33,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33 WrapperNode [2021-11-07 02:18:33,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:18:33,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:18:33,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:18:33,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:18:33,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:33,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:18:34,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:18:34,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:18:34,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:18:34,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:18:34,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:18:34,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:18:34,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:18:34,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (1/1) ... [2021-11-07 02:18:34,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:18:34,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:18:35,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:18:35,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:18:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:18:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:18:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:18:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:18:35,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:18:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:18:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:18:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:18:35,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:19:57,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:19:57,073 INFO L299 CfgBuilder]: Removed 3230 assume(true) statements. [2021-11-07 02:19:57,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:57 BoogieIcfgContainer [2021-11-07 02:19:57,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:19:57,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:19:57,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:19:57,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:19:57,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:18:29" (1/3) ... [2021-11-07 02:19:57,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d63707f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:57, skipping insertion in model container [2021-11-07 02:19:57,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:33" (2/3) ... [2021-11-07 02:19:57,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d63707f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:57, skipping insertion in model container [2021-11-07 02:19:57,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:57" (3/3) ... [2021-11-07 02:19:57,091 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--hippi--rrunner.ko-entry_point.cil.out.i [2021-11-07 02:19:57,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:19:57,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-07 02:19:57,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:19:57,176 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:19:57,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-07 02:19:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 2512 states, 2491 states have (on average 1.3147330389401846) internal successors, (3275), 2511 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:19:57,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:57,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:57,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:19:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash -241596489, now seen corresponding path program 1 times [2021-11-07 02:19:57,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:57,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930430005] [2021-11-07 02:19:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:57,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:57,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:57,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:19:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:58,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:19:58,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:19:59,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:19:59,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:59,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930430005] [2021-11-07 02:19:59,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930430005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:59,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:59,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:19:59,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887181303] [2021-11-07 02:19:59,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:19:59,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:19:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:19:59,546 INFO L87 Difference]: Start difference. First operand has 2512 states, 2491 states have (on average 1.3147330389401846) internal successors, (3275), 2511 states have internal predecessors, (3275), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:59,767 INFO L93 Difference]: Finished difference Result 5020 states and 6545 transitions. [2021-11-07 02:19:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:19:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 02:19:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:59,934 INFO L225 Difference]: With dead ends: 5020 [2021-11-07 02:19:59,936 INFO L226 Difference]: Without dead ends: 2468 [2021-11-07 02:19:59,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:19:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2021-11-07 02:20:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2468. [2021-11-07 02:20:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2448 states have (on average 1.2810457516339868) internal successors, (3136), 2467 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3136 transitions. [2021-11-07 02:20:00,146 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3136 transitions. Word has length 38 [2021-11-07 02:20:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:00,147 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3136 transitions. [2021-11-07 02:20:00,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3136 transitions. [2021-11-07 02:20:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:20:00,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:00,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:00,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:00,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:00,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash -266212417, now seen corresponding path program 1 times [2021-11-07 02:20:00,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:00,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616311667] [2021-11-07 02:20:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:00,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:00,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:00,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:20:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:02,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:20:02,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:02,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:02,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:02,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616311667] [2021-11-07 02:20:02,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616311667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:02,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:02,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:20:02,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147704079] [2021-11-07 02:20:02,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:02,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:02,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:02,657 INFO L87 Difference]: Start difference. First operand 2468 states and 3136 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:03,988 INFO L93 Difference]: Finished difference Result 4924 states and 6267 transitions. [2021-11-07 02:20:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 02:20:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:04,008 INFO L225 Difference]: With dead ends: 4924 [2021-11-07 02:20:04,008 INFO L226 Difference]: Without dead ends: 2476 [2021-11-07 02:20:04,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-07 02:20:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2021-11-07 02:20:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2456 states have (on average 1.280130293159609) internal successors, (3144), 2475 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3144 transitions. [2021-11-07 02:20:04,105 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3144 transitions. Word has length 38 [2021-11-07 02:20:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:04,105 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 3144 transitions. [2021-11-07 02:20:04,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3144 transitions. [2021-11-07 02:20:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:20:04,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:04,113 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:04,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:04,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:04,337 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash -786415745, now seen corresponding path program 1 times [2021-11-07 02:20:04,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:04,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404405105] [2021-11-07 02:20:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:04,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:04,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:04,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:04,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:20:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:06,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:06,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:06,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404405105] [2021-11-07 02:20:06,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404405105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:06,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1209406804] [2021-11-07 02:20:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:06,869 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:06,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:06,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:20:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:08,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:08,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:08,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:08,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1209406804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:08,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:08,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:20:08,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087992251] [2021-11-07 02:20:08,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:08,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:08,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:20:08,765 INFO L87 Difference]: Start difference. First operand 2476 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:09,378 INFO L93 Difference]: Finished difference Result 6324 states and 8080 transitions. [2021-11-07 02:20:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 02:20:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:09,406 INFO L225 Difference]: With dead ends: 6324 [2021-11-07 02:20:09,406 INFO L226 Difference]: Without dead ends: 3877 [2021-11-07 02:20:09,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:20:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2021-11-07 02:20:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 3713. [2021-11-07 02:20:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3693 states have (on average 1.2940698619008937) internal successors, (4779), 3712 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4779 transitions. [2021-11-07 02:20:09,554 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4779 transitions. Word has length 42 [2021-11-07 02:20:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:09,555 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 4779 transitions. [2021-11-07 02:20:09,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4779 transitions. [2021-11-07 02:20:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 02:20:09,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:09,558 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:09,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:09,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:09,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:09,970 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -253879730, now seen corresponding path program 1 times [2021-11-07 02:20:09,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:09,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720590373] [2021-11-07 02:20:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:09,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:09,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:10,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:20:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:11,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:11,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:12,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:12,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:12,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720590373] [2021-11-07 02:20:12,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720590373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:12,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306398974] [2021-11-07 02:20:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:12,788 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:12,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:12,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:12,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:20:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:14,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:20:14,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:14,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:15,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306398974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:15,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:15,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:20:15,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68204498] [2021-11-07 02:20:15,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:15,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:15,007 INFO L87 Difference]: Start difference. First operand 3713 states and 4779 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:15,955 INFO L93 Difference]: Finished difference Result 15003 states and 18971 transitions. [2021-11-07 02:20:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:20:15,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 02:20:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:16,032 INFO L225 Difference]: With dead ends: 15003 [2021-11-07 02:20:16,032 INFO L226 Difference]: Without dead ends: 11319 [2021-11-07 02:20:16,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:20:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11319 states. [2021-11-07 02:20:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11319 to 5828. [2021-11-07 02:20:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5808 states have (on average 1.2680785123966942) internal successors, (7365), 5827 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 7365 transitions. [2021-11-07 02:20:16,392 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 7365 transitions. Word has length 53 [2021-11-07 02:20:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:16,394 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 7365 transitions. [2021-11-07 02:20:16,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 7365 transitions. [2021-11-07 02:20:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 02:20:16,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:16,397 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] [2021-11-07 02:20:16,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:16,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:16,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:16,817 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:16,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1485755221, now seen corresponding path program 1 times [2021-11-07 02:20:16,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:16,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136454490] [2021-11-07 02:20:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:16,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:16,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:16,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:16,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:20:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:18,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:18,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:19,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:19,753 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:19,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136454490] [2021-11-07 02:20:19,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136454490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:19,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1327575088] [2021-11-07 02:20:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:19,753 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:19,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:19,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:19,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:20:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:20:20,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:21,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:21,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1327575088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:21,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:21,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:20:21,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909193421] [2021-11-07 02:20:21,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:21,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:21,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:21,775 INFO L87 Difference]: Start difference. First operand 5828 states and 7365 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:23,018 INFO L93 Difference]: Finished difference Result 25576 states and 31901 transitions. [2021-11-07 02:20:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:20:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 02:20:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:23,141 INFO L225 Difference]: With dead ends: 25576 [2021-11-07 02:20:23,142 INFO L226 Difference]: Without dead ends: 19777 [2021-11-07 02:20:23,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:20:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19777 states. [2021-11-07 02:20:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19777 to 11209. [2021-11-07 02:20:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11209 states, 11189 states have (on average 1.2640986683349718) internal successors, (14144), 11208 states have internal predecessors, (14144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 14144 transitions. [2021-11-07 02:20:23,925 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 14144 transitions. Word has length 54 [2021-11-07 02:20:23,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:23,926 INFO L470 AbstractCegarLoop]: Abstraction has 11209 states and 14144 transitions. [2021-11-07 02:20:23,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:23,927 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 14144 transitions. [2021-11-07 02:20:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:20:23,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:23,931 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] [2021-11-07 02:20:23,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:24,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:24,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:24,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1019189086, now seen corresponding path program 1 times [2021-11-07 02:20:24,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:24,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022691973] [2021-11-07 02:20:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:24,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:24,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:24,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:20:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:26,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:26,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:26,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:27,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:27,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022691973] [2021-11-07 02:20:27,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022691973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:27,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [103445833] [2021-11-07 02:20:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:27,116 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:27,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:27,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:27,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:20:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:28,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:20:28,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:28,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:29,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [103445833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:29,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:29,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:20:29,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330706550] [2021-11-07 02:20:29,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:29,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:29,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:29,220 INFO L87 Difference]: Start difference. First operand 11209 states and 14144 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:30,627 INFO L93 Difference]: Finished difference Result 49819 states and 62074 transitions. [2021-11-07 02:20:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:20:30,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 02:20:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:30,755 INFO L225 Difference]: With dead ends: 49819 [2021-11-07 02:20:30,755 INFO L226 Difference]: Without dead ends: 38639 [2021-11-07 02:20:30,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:20:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38639 states. [2021-11-07 02:20:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38639 to 21596. [2021-11-07 02:20:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21596 states, 21576 states have (on average 1.2594549499443826) internal successors, (27174), 21595 states have internal predecessors, (27174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21596 states to 21596 states and 27174 transitions. [2021-11-07 02:20:32,303 INFO L78 Accepts]: Start accepts. Automaton has 21596 states and 27174 transitions. Word has length 55 [2021-11-07 02:20:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:32,306 INFO L470 AbstractCegarLoop]: Abstraction has 21596 states and 27174 transitions. [2021-11-07 02:20:32,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21596 states and 27174 transitions. [2021-11-07 02:20:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 02:20:32,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:32,308 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] [2021-11-07 02:20:32,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:32,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:32,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:32,737 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:32,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash 559459903, now seen corresponding path program 1 times [2021-11-07 02:20:32,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:32,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780796180] [2021-11-07 02:20:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:32,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:32,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:32,742 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:32,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:20:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:34,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:34,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:35,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:35,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:35,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780796180] [2021-11-07 02:20:35,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780796180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:35,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1907037144] [2021-11-07 02:20:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:35,527 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:35,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:35,529 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:35,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:20:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:36,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:20:36,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:37,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:20:37,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1907037144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:37,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:37,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:20:37,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967773762] [2021-11-07 02:20:37,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:37,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:37,684 INFO L87 Difference]: Start difference. First operand 21596 states and 27174 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:40,829 INFO L93 Difference]: Finished difference Result 97172 states and 120824 transitions. [2021-11-07 02:20:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:20:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 56 [2021-11-07 02:20:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:41,131 INFO L225 Difference]: With dead ends: 97172 [2021-11-07 02:20:41,131 INFO L226 Difference]: Without dead ends: 75605 [2021-11-07 02:20:41,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:20:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75605 states. [2021-11-07 02:20:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75605 to 41619. [2021-11-07 02:20:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41619 states, 41599 states have (on average 1.2542609197336474) internal successors, (52176), 41618 states have internal predecessors, (52176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41619 states to 41619 states and 52176 transitions. [2021-11-07 02:20:44,281 INFO L78 Accepts]: Start accepts. Automaton has 41619 states and 52176 transitions. Word has length 56 [2021-11-07 02:20:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:44,281 INFO L470 AbstractCegarLoop]: Abstraction has 41619 states and 52176 transitions. [2021-11-07 02:20:44,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 41619 states and 52176 transitions. [2021-11-07 02:20:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 02:20:44,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:44,284 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:44,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 02:20:44,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:44,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:44,699 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:44,700 INFO L85 PathProgramCache]: Analyzing trace with hash 938009893, now seen corresponding path program 1 times [2021-11-07 02:20:44,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:44,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924661905] [2021-11-07 02:20:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:44,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:44,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:44,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:44,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:20:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:46,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:46,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:20:47,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:20:47,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:47,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924661905] [2021-11-07 02:20:47,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924661905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:47,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971089056] [2021-11-07 02:20:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:47,683 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:47,684 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:47,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:20:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:49,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:20:49,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 02:20:49,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 02:20:50,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1971089056] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:50,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:50,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 02:20:50,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41778013] [2021-11-07 02:20:50,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:20:50,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:20:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:20:50,170 INFO L87 Difference]: Start difference. First operand 41619 states and 52176 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:55,734 INFO L93 Difference]: Finished difference Result 138851 states and 173068 transitions. [2021-11-07 02:20:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:20:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 61 [2021-11-07 02:20:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:55,972 INFO L225 Difference]: With dead ends: 138851 [2021-11-07 02:20:55,973 INFO L226 Difference]: Without dead ends: 97261 [2021-11-07 02:20:56,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:20:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97261 states. [2021-11-07 02:20:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97261 to 41699. [2021-11-07 02:20:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41699 states, 41679 states have (on average 1.2537728832265649) internal successors, (52256), 41698 states have internal predecessors, (52256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41699 states to 41699 states and 52256 transitions. [2021-11-07 02:20:59,504 INFO L78 Accepts]: Start accepts. Automaton has 41699 states and 52256 transitions. Word has length 61 [2021-11-07 02:20:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:59,505 INFO L470 AbstractCegarLoop]: Abstraction has 41699 states and 52256 transitions. [2021-11-07 02:20:59,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41699 states and 52256 transitions. [2021-11-07 02:20:59,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 02:20:59,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:59,514 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] [2021-11-07 02:20:59,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:59,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 02:20:59,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:59,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:20:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1567404676, now seen corresponding path program 1 times [2021-11-07 02:20:59,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:59,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368626085] [2021-11-07 02:20:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:59,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:59,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:59,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:21:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:02,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:02,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:21:02,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:21:03,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:03,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368626085] [2021-11-07 02:21:03,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368626085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:03,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268074375] [2021-11-07 02:21:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:03,735 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:03,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:03,736 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:03,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:21:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:05,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:05,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:21:05,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:21:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1268074375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:05,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:21:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615086095] [2021-11-07 02:21:05,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:21:05,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:21:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:05,926 INFO L87 Difference]: Start difference. First operand 41699 states and 52256 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:09,094 INFO L93 Difference]: Finished difference Result 41699 states and 52256 transitions. [2021-11-07 02:21:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:09,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 127 [2021-11-07 02:21:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:09,193 INFO L225 Difference]: With dead ends: 41699 [2021-11-07 02:21:09,193 INFO L226 Difference]: Without dead ends: 41675 [2021-11-07 02:21:09,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:09,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41675 states. [2021-11-07 02:21:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41675 to 41675. [2021-11-07 02:21:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41675 states, 41667 states have (on average 1.2488540091679265) internal successors, (52036), 41674 states have internal predecessors, (52036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41675 states to 41675 states and 52036 transitions. [2021-11-07 02:21:12,106 INFO L78 Accepts]: Start accepts. Automaton has 41675 states and 52036 transitions. Word has length 127 [2021-11-07 02:21:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:12,107 INFO L470 AbstractCegarLoop]: Abstraction has 41675 states and 52036 transitions. [2021-11-07 02:21:12,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand 41675 states and 52036 transitions. [2021-11-07 02:21:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-07 02:21:12,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:12,118 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:12,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:12,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:12,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:12,519 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:21:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1453012791, now seen corresponding path program 1 times [2021-11-07 02:21:12,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:12,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369723596] [2021-11-07 02:21:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:12,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:12,525 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:12,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:21:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:15,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:15,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 02:21:16,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 02:21:18,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:18,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369723596] [2021-11-07 02:21:18,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369723596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:18,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [67325667] [2021-11-07 02:21:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:18,020 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:18,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:18,021 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:18,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 02:21:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:20,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:20,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:21:21,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:21:22,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [67325667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:22,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:22,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:21:22,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438513643] [2021-11-07 02:21:22,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:21:22,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:22,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:21:22,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:22,299 INFO L87 Difference]: Start difference. First operand 41675 states and 52036 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:27,619 INFO L93 Difference]: Finished difference Result 121367 states and 151550 transitions. [2021-11-07 02:21:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:27,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 221 [2021-11-07 02:21:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:27,788 INFO L225 Difference]: With dead ends: 121367 [2021-11-07 02:21:27,788 INFO L226 Difference]: Without dead ends: 79721 [2021-11-07 02:21:27,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79721 states. [2021-11-07 02:21:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79721 to 79673. [2021-11-07 02:21:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79673 states, 79665 states have (on average 1.2486411849620285) internal successors, (99473), 79672 states have internal predecessors, (99473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79673 states to 79673 states and 99473 transitions. [2021-11-07 02:21:33,615 INFO L78 Accepts]: Start accepts. Automaton has 79673 states and 99473 transitions. Word has length 221 [2021-11-07 02:21:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:33,616 INFO L470 AbstractCegarLoop]: Abstraction has 79673 states and 99473 transitions. [2021-11-07 02:21:33,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 79673 states and 99473 transitions. [2021-11-07 02:21:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-07 02:21:33,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:33,630 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:33,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:33,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 02:21:34,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,045 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:21:34,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash -296927394, now seen corresponding path program 1 times [2021-11-07 02:21:34,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:34,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395786246] [2021-11-07 02:21:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:34,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:34,050 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:34,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:21:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:37,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:37,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:21:38,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:21:40,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:40,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395786246] [2021-11-07 02:21:40,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395786246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:40,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [30171110] [2021-11-07 02:21:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:40,151 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:40,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:40,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:21:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:42,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 02:21:43,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 02:21:44,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [30171110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:44,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:44,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:21:44,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104237629] [2021-11-07 02:21:44,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:44,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:44,349 INFO L87 Difference]: Start difference. First operand 79673 states and 99473 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:54,733 INFO L93 Difference]: Finished difference Result 210485 states and 264179 transitions. [2021-11-07 02:21:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:54,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 239 [2021-11-07 02:21:54,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:54,998 INFO L225 Difference]: With dead ends: 210485 [2021-11-07 02:21:54,998 INFO L226 Difference]: Without dead ends: 130841 [2021-11-07 02:21:55,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130841 states. [2021-11-07 02:22:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130841 to 126137. [2021-11-07 02:22:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126137 states, 126129 states have (on average 1.2559918813278468) internal successors, (158417), 126136 states have internal predecessors, (158417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126137 states to 126137 states and 158417 transitions. [2021-11-07 02:22:03,339 INFO L78 Accepts]: Start accepts. Automaton has 126137 states and 158417 transitions. Word has length 239 [2021-11-07 02:22:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:03,340 INFO L470 AbstractCegarLoop]: Abstraction has 126137 states and 158417 transitions. [2021-11-07 02:22:03,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 126137 states and 158417 transitions. [2021-11-07 02:22:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-07 02:22:03,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:03,360 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:03,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 02:22:03,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:03,777 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:22:03,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash -683746355, now seen corresponding path program 1 times [2021-11-07 02:22:03,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:03,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166713198] [2021-11-07 02:22:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:03,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:03,784 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:03,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:22:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:07,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:22:07,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:22:08,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:22:09,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:09,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166713198] [2021-11-07 02:22:09,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166713198] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:09,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2059922165] [2021-11-07 02:22:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:09,686 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:09,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:09,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_817ef940-f3e7-4e65-8756-352a4ce280e4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 02:22:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:12,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:12,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:22:13,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:22:13,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2059922165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:13,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:22:13,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 02:22:13,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195190394] [2021-11-07 02:22:13,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:13,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:22:13,957 INFO L87 Difference]: Start difference. First operand 126137 states and 158417 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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)