./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.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_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/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_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/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_1efa7df5-e32e-478d-b2af-c51de7d78c75/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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:41,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:41,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:41,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:41,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:41,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:41,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:41,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:41,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:41,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:41,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:41,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:41,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:41,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:41,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:41,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:41,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:41,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:41,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:41,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:41,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:41,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:41,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:41,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:41,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:41,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:41,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:41,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:41,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:41,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:41,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:41,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:41,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:41,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:41,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:41,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:41,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:41,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:41,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:41,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:41,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:41,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:41,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:41,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:41,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:41,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:41,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:41,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:41,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:41,303 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:41,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:41,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:41,310 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:41,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:41,311 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:41,311 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:41,311 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:41,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:41,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:41,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:41,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:41,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:41,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:41,314 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:41,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:41,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:41,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:41,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:41,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:41,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:41,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:41,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:41,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:41,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:41,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:41,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:41,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:41,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:41,318 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-07 00:53:41,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:41,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:41,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:41,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:41,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:41,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-07 00:53:41,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/aaec9d09f/4c25f4a939b849268c4996f99c8bdd75/FLAGac827b4a7 [2021-11-07 00:53:42,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:42,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-07 00:53:42,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/aaec9d09f/4c25f4a939b849268c4996f99c8bdd75/FLAGac827b4a7 [2021-11-07 00:53:43,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/aaec9d09f/4c25f4a939b849268c4996f99c8bdd75 [2021-11-07 00:53:43,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:43,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:43,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:43,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:43,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:43,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fbec4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43, skipping insertion in model container [2021-11-07 00:53:43,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:43,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:44,631 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-07 00:53:44,946 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:44,954 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:45,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:45,750 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:53:45,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16ca98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:45, skipping insertion in model container [2021-11-07 00:53:45,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:45,751 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:45,754 INFO L168 Benchmark]: Toolchain (without parser) took 2680.73 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 59.2 MB in the beginning and 56.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:45,754 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:45,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2678.26 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 59.1 MB in the beginning and 56.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:45,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2678.26 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 59.1 MB in the beginning and 56.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7791]: 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/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_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/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_1efa7df5-e32e-478d-b2af-c51de7d78c75/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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:48,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:48,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:48,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:48,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:48,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:48,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:48,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:48,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:48,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:48,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:48,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:48,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:48,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:48,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:48,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:48,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:48,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:48,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:48,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:48,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:48,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:48,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:48,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:48,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:48,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:48,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:48,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:48,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:48,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:48,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:48,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:48,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:48,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:48,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:48,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:48,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:48,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:48,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:48,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:48,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:48,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:48,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:48,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:48,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:48,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:48,246 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:48,246 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:48,246 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:48,247 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:48,247 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:48,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:48,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:48,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:48,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:48,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:48,250 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:48,251 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:48,251 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:48,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:48,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:48,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:48,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:48,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:48,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:48,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:48,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:48,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:48,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:48,254 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:48,254 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:48,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:48,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:48,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:48,255 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-07 00:53:48,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:48,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:48,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:48,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:48,718 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:48,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-07 00:53:48,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/19b3f677c/7cd8707ad00e4778818939348b5f06b9/FLAG6b2e0bb11 [2021-11-07 00:53:49,794 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:49,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-07 00:53:49,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/19b3f677c/7cd8707ad00e4778818939348b5f06b9/FLAG6b2e0bb11 [2021-11-07 00:53:50,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/data/19b3f677c/7cd8707ad00e4778818939348b5f06b9 [2021-11-07 00:53:50,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:50,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:50,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:50,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:50,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:50,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f34f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50, skipping insertion in model container [2021-11-07 00:53:50,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:50,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:51,864 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-07 00:53:53,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:53,150 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:53,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:53,385 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-07 00:53:53,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:53,616 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:53,828 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_1efa7df5-e32e-478d-b2af-c51de7d78c75/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-07 00:53:54,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:54,289 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:54,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54 WrapperNode [2021-11-07 00:53:54,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:54,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:54,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:54,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:54,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:54,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:55,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:55,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:55,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:55,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:55,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:55,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:55,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:55,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:55,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (1/1) ... [2021-11-07 00:53:56,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:56,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:56,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:53:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:53:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:53:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:53:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:53:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:53:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 00:53:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:53:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:53:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:53:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:53:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:53:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:53:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:53:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:53:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:53:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:53:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:53:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:53:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:53:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:53:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:53:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-07 00:53:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:00:04,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:00:04,639 INFO L299 CfgBuilder]: Removed 2776 assume(true) statements. [2021-11-07 01:00:04,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:00:04 BoogieIcfgContainer [2021-11-07 01:00:04,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:00:04,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:00:04,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:00:04,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:00:04,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:50" (1/3) ... [2021-11-07 01:00:04,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d65dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:00:04, skipping insertion in model container [2021-11-07 01:00:04,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:54" (2/3) ... [2021-11-07 01:00:04,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d65dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:00:04, skipping insertion in model container [2021-11-07 01:00:04,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:00:04" (3/3) ... [2021-11-07 01:00:04,657 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-07 01:00:04,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:00:04,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:00:04,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:00:04,757 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:00:04,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:00:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 3351 states, 3349 states have (on average 1.4467005076142132) internal successors, (4845), 3350 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:00:04,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:04,889 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] [2021-11-07 01:00:04,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:00:04,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1079258943, now seen corresponding path program 1 times [2021-11-07 01:00:04,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:04,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976630506] [2021-11-07 01:00:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:04,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:04,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:04,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:05,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:00:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:26,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2063 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:00:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:27,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:27,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:27,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976630506] [2021-11-07 01:00:27,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976630506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:27,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:27,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:00:27,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351201259] [2021-11-07 01:00:27,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:27,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:27,493 INFO L87 Difference]: Start difference. First operand has 3351 states, 3349 states have (on average 1.4467005076142132) internal successors, (4845), 3350 states have internal predecessors, (4845), 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 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:31,539 INFO L93 Difference]: Finished difference Result 13267 states and 19201 transitions. [2021-11-07 01:00:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:00:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 24 [2021-11-07 01:00:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:31,646 INFO L225 Difference]: With dead ends: 13267 [2021-11-07 01:00:31,646 INFO L226 Difference]: Without dead ends: 9755 [2021-11-07 01:00:31,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9755 states. [2021-11-07 01:00:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9755 to 9755. [2021-11-07 01:00:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9755 states, 9754 states have (on average 1.4296698790239901) internal successors, (13945), 9754 states have internal predecessors, (13945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 13945 transitions. [2021-11-07 01:00:32,327 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 13945 transitions. Word has length 24 [2021-11-07 01:00:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:32,328 INFO L470 AbstractCegarLoop]: Abstraction has 9755 states and 13945 transitions. [2021-11-07 01:00:32,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 13945 transitions. [2021-11-07 01:00:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:00:32,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:32,338 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] [2021-11-07 01:00:32,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:00:32,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:32,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:00:32,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1835372418, now seen corresponding path program 1 times [2021-11-07 01:00:32,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:32,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854686418] [2021-11-07 01:00:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:32,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:32,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:32,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:00:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:53,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:00:53,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:54,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:54,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:54,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854686418] [2021-11-07 01:00:54,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854686418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:54,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:54,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:00:54,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274326006] [2021-11-07 01:00:54,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:00:54,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:00:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:00:54,421 INFO L87 Difference]: Start difference. First operand 9755 states and 13945 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:56,802 INFO L93 Difference]: Finished difference Result 29227 states and 41792 transitions. [2021-11-07 01:00:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:00:56,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 31 [2021-11-07 01:00:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:56,962 INFO L225 Difference]: With dead ends: 29227 [2021-11-07 01:00:56,962 INFO L226 Difference]: Without dead ends: 19483 [2021-11-07 01:00:56,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2021-11-07 01:00:57,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 19483. [2021-11-07 01:00:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19483 states, 19482 states have (on average 1.4291653834308593) internal successors, (27843), 19482 states have internal predecessors, (27843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 27843 transitions. [2021-11-07 01:00:57,981 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 27843 transitions. Word has length 31 [2021-11-07 01:00:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:57,982 INFO L470 AbstractCegarLoop]: Abstraction has 19483 states and 27843 transitions. [2021-11-07 01:00:57,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 27843 transitions. [2021-11-07 01:00:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:00:58,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:58,004 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:00:58,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:58,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:58,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:00:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1277242410, now seen corresponding path program 1 times [2021-11-07 01:00:58,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:58,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773053144] [2021-11-07 01:00:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:58,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:58,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:58,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:58,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:01:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:21,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:21,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:01:21,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:01:22,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:22,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773053144] [2021-11-07 01:01:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773053144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:22,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:01:22,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:01:22,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292915597] [2021-11-07 01:01:22,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:01:22,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:01:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:01:22,148 INFO L87 Difference]: Start difference. First operand 19483 states and 27843 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:25,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:25,170 INFO L93 Difference]: Finished difference Result 42763 states and 61370 transitions. [2021-11-07 01:01:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:01:25,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-07 01:01:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:25,248 INFO L225 Difference]: With dead ends: 42763 [2021-11-07 01:01:25,248 INFO L226 Difference]: Without dead ends: 23298 [2021-11-07 01:01:25,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:01:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23298 states. [2021-11-07 01:01:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23298 to 22659. [2021-11-07 01:01:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22659 states, 22658 states have (on average 1.4383440727336922) internal successors, (32590), 22658 states have internal predecessors, (32590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22659 states to 22659 states and 32590 transitions. [2021-11-07 01:01:26,357 INFO L78 Accepts]: Start accepts. Automaton has 22659 states and 32590 transitions. Word has length 72 [2021-11-07 01:01:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:26,358 INFO L470 AbstractCegarLoop]: Abstraction has 22659 states and 32590 transitions. [2021-11-07 01:01:26,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22659 states and 32590 transitions. [2021-11-07 01:01:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 01:01:26,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:26,387 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:26,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:26,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:01:26,611 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:01:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2090471931, now seen corresponding path program 1 times [2021-11-07 01:01:26,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:26,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447725981] [2021-11-07 01:01:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:26,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:26,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:26,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:01:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:50,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:01:50,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:01:51,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:01:52,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:52,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447725981] [2021-11-07 01:01:52,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447725981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:52,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:01:52,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:01:52,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790556926] [2021-11-07 01:01:52,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:01:52,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:01:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:01:52,302 INFO L87 Difference]: Start difference. First operand 22659 states and 32590 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:01:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:59,895 INFO L93 Difference]: Finished difference Result 46004 states and 66186 transitions. [2021-11-07 01:01:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:01:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 01:01:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:59,964 INFO L225 Difference]: With dead ends: 46004 [2021-11-07 01:01:59,965 INFO L226 Difference]: Without dead ends: 23353 [2021-11-07 01:02:00,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:02:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23353 states. [2021-11-07 01:02:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23353 to 22662. [2021-11-07 01:02:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22662 states, 22661 states have (on average 1.4381977847403027) internal successors, (32591), 22661 states have internal predecessors, (32591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22662 states to 22662 states and 32591 transitions. [2021-11-07 01:02:01,061 INFO L78 Accepts]: Start accepts. Automaton has 22662 states and 32591 transitions. Word has length 94 [2021-11-07 01:02:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:01,064 INFO L470 AbstractCegarLoop]: Abstraction has 22662 states and 32591 transitions. [2021-11-07 01:02:01,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22662 states and 32591 transitions. [2021-11-07 01:02:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:02:01,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:01,093 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:01,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:01,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:01,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:02:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1669029952, now seen corresponding path program 1 times [2021-11-07 01:02:01,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:01,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023744908] [2021-11-07 01:02:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:01,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:01,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:01,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:01,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:02:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:26,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:26,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:02:26,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:02:27,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:27,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023744908] [2021-11-07 01:02:27,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023744908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:27,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:27,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:02:27,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668484670] [2021-11-07 01:02:27,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:27,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:02:27,602 INFO L87 Difference]: Start difference. First operand 22662 states and 32591 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:36,088 INFO L93 Difference]: Finished difference Result 56288 states and 81638 transitions. [2021-11-07 01:02:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:02:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 96 [2021-11-07 01:02:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:36,293 INFO L225 Difference]: With dead ends: 56288 [2021-11-07 01:02:36,294 INFO L226 Difference]: Without dead ends: 33644 [2021-11-07 01:02:36,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33644 states. [2021-11-07 01:02:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33644 to 22662. [2021-11-07 01:02:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22662 states, 22661 states have (on average 1.4380212700233883) internal successors, (32587), 22661 states have internal predecessors, (32587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22662 states to 22662 states and 32587 transitions. [2021-11-07 01:02:37,639 INFO L78 Accepts]: Start accepts. Automaton has 22662 states and 32587 transitions. Word has length 96 [2021-11-07 01:02:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:37,639 INFO L470 AbstractCegarLoop]: Abstraction has 22662 states and 32587 transitions. [2021-11-07 01:02:37,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 22662 states and 32587 transitions. [2021-11-07 01:02:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:02:37,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:37,673 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:37,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:37,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:37,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:02:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1658586690, now seen corresponding path program 1 times [2021-11-07 01:02:37,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:37,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49591938] [2021-11-07 01:02:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:37,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:37,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:37,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:37,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:03:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:02,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:02,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:03:03,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:03:03,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:03,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49591938] [2021-11-07 01:03:03,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49591938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:03,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:03,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:03:03,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274593534] [2021-11-07 01:03:03,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:03:03,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:03:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:03:03,736 INFO L87 Difference]: Start difference. First operand 22662 states and 32587 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:12,939 INFO L93 Difference]: Finished difference Result 85626 states and 124408 transitions. [2021-11-07 01:03:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:03:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 96 [2021-11-07 01:03:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:13,059 INFO L225 Difference]: With dead ends: 85626 [2021-11-07 01:03:13,059 INFO L226 Difference]: Without dead ends: 62982 [2021-11-07 01:03:13,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:03:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62982 states. [2021-11-07 01:03:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62982 to 22662. [2021-11-07 01:03:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22662 states, 22661 states have (on average 1.4377564979480164) internal successors, (32581), 22661 states have internal predecessors, (32581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22662 states to 22662 states and 32581 transitions. [2021-11-07 01:03:14,659 INFO L78 Accepts]: Start accepts. Automaton has 22662 states and 32581 transitions. Word has length 96 [2021-11-07 01:03:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:14,660 INFO L470 AbstractCegarLoop]: Abstraction has 22662 states and 32581 transitions. [2021-11-07 01:03:14,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 22662 states and 32581 transitions. [2021-11-07 01:03:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:03:14,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:14,683 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:03:14,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:14,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:14,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:03:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1264219904, now seen corresponding path program 1 times [2021-11-07 01:03:14,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:14,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188025870] [2021-11-07 01:03:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:14,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:14,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:14,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:14,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:03:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:38,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:03:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:03:39,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:03:39,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:39,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188025870] [2021-11-07 01:03:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188025870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:39,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:39,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:03:39,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586661745] [2021-11-07 01:03:39,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:03:39,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:03:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:03:39,468 INFO L87 Difference]: Start difference. First operand 22662 states and 32581 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:49,684 INFO L93 Difference]: Finished difference Result 144778 states and 207660 transitions. [2021-11-07 01:03:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:03:49,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 96 [2021-11-07 01:03:49,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:49,954 INFO L225 Difference]: With dead ends: 144778 [2021-11-07 01:03:49,955 INFO L226 Difference]: Without dead ends: 122134 [2021-11-07 01:03:50,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:03:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122134 states. [2021-11-07 01:03:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122134 to 22762. [2021-11-07 01:03:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22762 states, 22761 states have (on average 1.4358332234963314) internal successors, (32681), 22761 states have internal predecessors, (32681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22762 states to 22762 states and 32681 transitions. [2021-11-07 01:03:52,514 INFO L78 Accepts]: Start accepts. Automaton has 22762 states and 32681 transitions. Word has length 96 [2021-11-07 01:03:52,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:52,515 INFO L470 AbstractCegarLoop]: Abstraction has 22762 states and 32681 transitions. [2021-11-07 01:03:52,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 22762 states and 32681 transitions. [2021-11-07 01:03:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:03:52,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:52,553 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:03:52,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:52,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:52,767 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:03:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 813578915, now seen corresponding path program 1 times [2021-11-07 01:03:52,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:03:52,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217346337] [2021-11-07 01:03:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:52,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:03:52,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:03:52,785 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:03:52,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:04:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:16,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:04:16,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:04:17,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:04:17,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:17,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217346337] [2021-11-07 01:04:17,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217346337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:17,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:17,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:04:17,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274337181] [2021-11-07 01:04:17,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:17,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:17,750 INFO L87 Difference]: Start difference. First operand 22762 states and 32681 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:24,188 INFO L93 Difference]: Finished difference Result 87026 states and 125019 transitions. [2021-11-07 01:04:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:04:24,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 98 [2021-11-07 01:04:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:24,282 INFO L225 Difference]: With dead ends: 87026 [2021-11-07 01:04:24,282 INFO L226 Difference]: Without dead ends: 64282 [2021-11-07 01:04:24,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64282 states. [2021-11-07 01:04:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64282 to 22762. [2021-11-07 01:04:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22762 states, 22761 states have (on average 1.4336364834585476) internal successors, (32631), 22761 states have internal predecessors, (32631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22762 states to 22762 states and 32631 transitions. [2021-11-07 01:04:26,314 INFO L78 Accepts]: Start accepts. Automaton has 22762 states and 32631 transitions. Word has length 98 [2021-11-07 01:04:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:26,315 INFO L470 AbstractCegarLoop]: Abstraction has 22762 states and 32631 transitions. [2021-11-07 01:04:26,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 22762 states and 32631 transitions. [2021-11-07 01:04:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:04:26,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:26,334 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:26,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:26,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:26,536 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:04:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash 227187804, now seen corresponding path program 1 times [2021-11-07 01:04:26,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:26,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973786941] [2021-11-07 01:04:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:26,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:26,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:26,546 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:26,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:04:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:50,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:50,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:04:51,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:04:51,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:51,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973786941] [2021-11-07 01:04:51,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973786941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:51,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:51,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:04:51,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381876108] [2021-11-07 01:04:51,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:51,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:51,589 INFO L87 Difference]: Start difference. First operand 22762 states and 32631 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:58,456 INFO L93 Difference]: Finished difference Result 109076 states and 156620 transitions. [2021-11-07 01:04:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:04:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 98 [2021-11-07 01:04:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:58,598 INFO L225 Difference]: With dead ends: 109076 [2021-11-07 01:04:58,598 INFO L226 Difference]: Without dead ends: 86332 [2021-11-07 01:04:58,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86332 states. [2021-11-07 01:05:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86332 to 22822. [2021-11-07 01:05:01,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22822 states, 22821 states have (on average 1.4324963849086367) internal successors, (32691), 22821 states have internal predecessors, (32691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22822 states to 22822 states and 32691 transitions. [2021-11-07 01:05:01,693 INFO L78 Accepts]: Start accepts. Automaton has 22822 states and 32691 transitions. Word has length 98 [2021-11-07 01:05:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:01,694 INFO L470 AbstractCegarLoop]: Abstraction has 22822 states and 32691 transitions. [2021-11-07 01:05:01,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 22822 states and 32691 transitions. [2021-11-07 01:05:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:05:01,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:01,714 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:01,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:01,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:01,939 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:05:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1220308693, now seen corresponding path program 1 times [2021-11-07 01:05:01,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:01,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824022302] [2021-11-07 01:05:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:01,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:01,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:01,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:01,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efa7df5-e32e-478d-b2af-c51de7d78c75/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:05:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:26,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:05:26,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:05:27,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:05:29,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:29,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824022302] [2021-11-07 01:05:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824022302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:29,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:29,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-07 01:05:29,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317946634] [2021-11-07 01:05:29,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:05:29,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:05:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:05:29,133 INFO L87 Difference]: Start difference. First operand 22822 states and 32691 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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)