./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.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_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/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_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/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_a16f7f97-bf7d-492d-9ff6-90e98331c830/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 e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:42,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:42,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:42,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:42,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:42,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:42,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:42,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:42,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:42,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:42,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:42,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:42,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:42,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:42,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:42,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:42,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:42,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:42,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:42,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:42,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:42,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:42,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:42,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:42,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:42,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:42,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:42,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:42,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:42,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:42,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:42,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:42,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:42,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:42,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:42,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:42,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:42,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:42,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:42,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:42,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:42,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:42,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:42,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:42,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:42,994 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:42,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:42,994 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:42,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:42,995 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:42,995 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:42,995 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:42,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:42,996 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:42,996 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:42,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:42,996 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:42,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:42,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:42,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:42,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:42,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:42,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:43,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:43,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:43,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:43,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:43,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:43,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:43,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:43,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:43,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:43,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:43,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:43,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:43,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:43,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:43,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:43,010 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 [2021-11-07 00:53:43,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:43,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:43,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:43,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:43,311 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:43,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2021-11-07 00:53:43,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/69a8df614/ba1583dfb92245c5a59a9cab9ea88fae/FLAGf643afb18 [2021-11-07 00:53:44,111 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:44,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2021-11-07 00:53:44,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/69a8df614/ba1583dfb92245c5a59a9cab9ea88fae/FLAGf643afb18 [2021-11-07 00:53:44,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/69a8df614/ba1583dfb92245c5a59a9cab9ea88fae [2021-11-07 00:53:44,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:44,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:44,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:44,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:44,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:44,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:44" (1/1) ... [2021-11-07 00:53:44,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b16ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:44, skipping insertion in model container [2021-11-07 00:53:44,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:44" (1/1) ... [2021-11-07 00:53:44,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:44,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:45,012 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 00:53:45,015 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 00:53:45,016 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 00:53:45,024 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 00:53:45,145 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 00:53:45,146 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 00:53:45,147 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 00:53:45,167 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2021-11-07 00:53:45,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:45,216 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 00:53:45,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ab7ba33 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 00:53:45,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:45,218 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:45,220 INFO L168 Benchmark]: Toolchain (without parser) took 935.90 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 64.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:45,221 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:45,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 931.39 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 65.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:45,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 931.39 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 65.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1680]: 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/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_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/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_a16f7f97-bf7d-492d-9ff6-90e98331c830/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 e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:47,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:47,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:47,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:47,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:47,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:47,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:47,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:47,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:47,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:47,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:47,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:47,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:47,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:47,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:47,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:47,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:47,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:47,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:47,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:47,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:47,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:47,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:47,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:47,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:47,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:47,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:47,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:47,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:47,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:47,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:47,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:47,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:47,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:47,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:47,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:47,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:47,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:47,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:47,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:47,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:47,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:47,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:47,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:47,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:47,634 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:47,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:47,634 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:47,634 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:47,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:47,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:47,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:47,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:47,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:47,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:47,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:47,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:47,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:47,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:47,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:47,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:47,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:47,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:47,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:47,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:47,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:47,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:47,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:47,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:47,642 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:47,642 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:47,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:47,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:47,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:47,643 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 [2021-11-07 00:53:48,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:48,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:48,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:48,039 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:48,040 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:48,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2021-11-07 00:53:48,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/0b64156e3/41b1c5b079a84cdaad9286645b97d3ea/FLAGb165f8e56 [2021-11-07 00:53:48,844 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:48,845 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2021-11-07 00:53:48,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/0b64156e3/41b1c5b079a84cdaad9286645b97d3ea/FLAGb165f8e56 [2021-11-07 00:53:48,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/data/0b64156e3/41b1c5b079a84cdaad9286645b97d3ea [2021-11-07 00:53:48,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:48,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:48,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:48,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:48,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:48,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:48" (1/1) ... [2021-11-07 00:53:49,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b09e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:48, skipping insertion in model container [2021-11-07 00:53:49,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:48" (1/1) ... [2021-11-07 00:53:49,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:49,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:49,806 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2021-11-07 00:53:49,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:49,845 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:49,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:49,968 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2021-11-07 00:53:49,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:49,983 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:50,148 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_a16f7f97-bf7d-492d-9ff6-90e98331c830/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2021-11-07 00:53:50,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:50,214 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:50,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50 WrapperNode [2021-11-07 00:53:50,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:50,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:50,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:50,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:50,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:50,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:50,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:50,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:50,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:50,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:50,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:50,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:50,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:50,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:50,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:53:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:53:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:53:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:53:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:03,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:03,528 INFO L299 CfgBuilder]: Removed 232 assume(true) statements. [2021-11-07 00:54:03,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:03 BoogieIcfgContainer [2021-11-07 00:54:03,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:03,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:03,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:03,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:03,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:48" (1/3) ... [2021-11-07 00:54:03,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7e558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:03, skipping insertion in model container [2021-11-07 00:54:03,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50" (2/3) ... [2021-11-07 00:54:03,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7e558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:03, skipping insertion in model container [2021-11-07 00:54:03,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:03" (3/3) ... [2021-11-07 00:54:03,539 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2021-11-07 00:54:03,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:03,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 00:54:03,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:03,613 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 00:54:03,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 00:54:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 223 states have (on average 1.3542600896860986) internal successors, (302), 226 states have internal predecessors, (302), 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 00:54:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 00:54:03,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:03,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:03,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1271292787, now seen corresponding path program 1 times [2021-11-07 00:54:03,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:03,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867654473] [2021-11-07 00:54:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:03,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:03,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:03,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:04,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:54:04,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:05,084 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 00:54:05,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:05,660 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 00:54:05,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:05,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867654473] [2021-11-07 00:54:05,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867654473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:05,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:05,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 00:54:05,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571934391] [2021-11-07 00:54:05,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:54:05,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:54:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:05,685 INFO L87 Difference]: Start difference. First operand has 227 states, 223 states have (on average 1.3542600896860986) internal successors, (302), 226 states have internal predecessors, (302), 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 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 00:54:11,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:11,302 INFO L93 Difference]: Finished difference Result 1150 states and 1523 transitions. [2021-11-07 00:54:11,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 00:54:11,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 60 [2021-11-07 00:54:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:11,322 INFO L225 Difference]: With dead ends: 1150 [2021-11-07 00:54:11,323 INFO L226 Difference]: Without dead ends: 754 [2021-11-07 00:54:11,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:54:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-07 00:54:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 207. [2021-11-07 00:54:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 204 states have (on average 1.3235294117647058) internal successors, (270), 206 states have internal predecessors, (270), 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 00:54:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 270 transitions. [2021-11-07 00:54:11,400 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 270 transitions. Word has length 60 [2021-11-07 00:54:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:11,401 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 270 transitions. [2021-11-07 00:54:11,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 00:54:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 270 transitions. [2021-11-07 00:54:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 00:54:11,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:11,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:11,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:11,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:11,613 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:11,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1504484280, now seen corresponding path program 1 times [2021-11-07 00:54:11,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:11,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430300457] [2021-11-07 00:54:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:11,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:11,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:11,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:11,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:54:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:12,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:12,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:12,574 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 00:54:12,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:12,801 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 00:54:12,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:12,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430300457] [2021-11-07 00:54:12,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430300457] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:12,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:12,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:12,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243532254] [2021-11-07 00:54:12,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:12,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:12,805 INFO L87 Difference]: Start difference. First operand 207 states and 270 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 00:54:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:16,089 INFO L93 Difference]: Finished difference Result 603 states and 793 transitions. [2021-11-07 00:54:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:54:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 63 [2021-11-07 00:54:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:16,105 INFO L225 Difference]: With dead ends: 603 [2021-11-07 00:54:16,106 INFO L226 Difference]: Without dead ends: 402 [2021-11-07 00:54:16,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-07 00:54:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 209. [2021-11-07 00:54:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 206 states have (on average 1.3203883495145632) internal successors, (272), 208 states have internal predecessors, (272), 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 00:54:16,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 272 transitions. [2021-11-07 00:54:16,127 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 272 transitions. Word has length 63 [2021-11-07 00:54:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:16,127 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 272 transitions. [2021-11-07 00:54:16,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 00:54:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 272 transitions. [2021-11-07 00:54:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:16,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:16,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:16,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:16,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:16,357 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:16,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2084336754, now seen corresponding path program 1 times [2021-11-07 00:54:16,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:16,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679986785] [2021-11-07 00:54:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:16,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:16,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:16,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:54:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:17,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:17,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:17,366 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 00:54:17,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:17,566 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 00:54:17,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:17,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679986785] [2021-11-07 00:54:17,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679986785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:17,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:17,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:54:17,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684953076] [2021-11-07 00:54:17,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:17,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:17,569 INFO L87 Difference]: Start difference. First operand 209 states and 272 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:54:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:18,948 INFO L93 Difference]: Finished difference Result 413 states and 540 transitions. [2021-11-07 00:54:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:18,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-07 00:54:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:18,954 INFO L225 Difference]: With dead ends: 413 [2021-11-07 00:54:18,954 INFO L226 Difference]: Without dead ends: 210 [2021-11-07 00:54:18,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 00:54:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-07 00:54:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-07 00:54:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 207 states have (on average 1.318840579710145) internal successors, (273), 209 states have internal predecessors, (273), 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 00:54:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 273 transitions. [2021-11-07 00:54:18,967 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 273 transitions. Word has length 67 [2021-11-07 00:54:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:18,967 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 273 transitions. [2021-11-07 00:54:18,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:54:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 273 transitions. [2021-11-07 00:54:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:18,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:18,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:18,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:19,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:19,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1551099020, now seen corresponding path program 1 times [2021-11-07 00:54:19,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:19,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199955563] [2021-11-07 00:54:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:19,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:19,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:19,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:54:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:20,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:20,298 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 00:54:20,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:20,482 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 00:54:20,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:20,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199955563] [2021-11-07 00:54:20,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199955563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:20,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:20,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:20,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834573319] [2021-11-07 00:54:20,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:20,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:20,485 INFO L87 Difference]: Start difference. First operand 210 states and 273 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 00:54:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:20,839 INFO L93 Difference]: Finished difference Result 636 states and 821 transitions. [2021-11-07 00:54:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:20,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 67 [2021-11-07 00:54:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:20,847 INFO L225 Difference]: With dead ends: 636 [2021-11-07 00:54:20,847 INFO L226 Difference]: Without dead ends: 432 [2021-11-07 00:54:20,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:54:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-07 00:54:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 212. [2021-11-07 00:54:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 1.3157894736842106) internal successors, (275), 211 states have internal predecessors, (275), 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 00:54:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 275 transitions. [2021-11-07 00:54:20,862 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 275 transitions. Word has length 67 [2021-11-07 00:54:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:20,870 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 275 transitions. [2021-11-07 00:54:20,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 00:54:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 275 transitions. [2021-11-07 00:54:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:20,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:20,872 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:20,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:21,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:21,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1732751026, now seen corresponding path program 1 times [2021-11-07 00:54:21,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:21,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368310701] [2021-11-07 00:54:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:21,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:21,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:54:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:21,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:21,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:22,179 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 00:54:22,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:22,338 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 00:54:22,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:22,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368310701] [2021-11-07 00:54:22,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368310701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:22,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:22,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:54:22,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157719250] [2021-11-07 00:54:22,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:22,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:22,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:22,340 INFO L87 Difference]: Start difference. First operand 212 states and 275 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:54:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:22,414 INFO L93 Difference]: Finished difference Result 419 states and 546 transitions. [2021-11-07 00:54:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:22,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-07 00:54:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:22,421 INFO L225 Difference]: With dead ends: 419 [2021-11-07 00:54:22,421 INFO L226 Difference]: Without dead ends: 213 [2021-11-07 00:54:22,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 00:54:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-07 00:54:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-11-07 00:54:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.3142857142857143) internal successors, (276), 212 states have internal predecessors, (276), 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 00:54:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 276 transitions. [2021-11-07 00:54:22,438 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 276 transitions. Word has length 67 [2021-11-07 00:54:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:22,439 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 276 transitions. [2021-11-07 00:54:22,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:54:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 276 transitions. [2021-11-07 00:54:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:22,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:22,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:22,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:22,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:22,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:22,647 INFO L85 PathProgramCache]: Analyzing trace with hash 452887348, now seen corresponding path program 1 times [2021-11-07 00:54:22,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:22,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831592741] [2021-11-07 00:54:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:22,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:22,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:22,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:22,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:54:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:23,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 00:54:23,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:23,918 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 00:54:23,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:24,294 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 00:54:24,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:24,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831592741] [2021-11-07 00:54:24,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831592741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:24,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:24,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 00:54:24,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859883918] [2021-11-07 00:54:24,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:54:24,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:54:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:24,297 INFO L87 Difference]: Start difference. First operand 213 states and 276 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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 00:54:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:25,087 INFO L93 Difference]: Finished difference Result 675 states and 885 transitions. [2021-11-07 00:54:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:54:25,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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 67 [2021-11-07 00:54:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:25,101 INFO L225 Difference]: With dead ends: 675 [2021-11-07 00:54:25,101 INFO L226 Difference]: Without dead ends: 468 [2021-11-07 00:54:25,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-07 00:54:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-07 00:54:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 218. [2021-11-07 00:54:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 215 states have (on average 1.3069767441860465) internal successors, (281), 217 states have internal predecessors, (281), 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 00:54:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 281 transitions. [2021-11-07 00:54:25,117 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 281 transitions. Word has length 67 [2021-11-07 00:54:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:25,117 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 281 transitions. [2021-11-07 00:54:25,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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 00:54:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 281 transitions. [2021-11-07 00:54:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 00:54:25,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:25,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:25,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 00:54:25,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:25,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1357349354, now seen corresponding path program 1 times [2021-11-07 00:54:25,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:25,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224787379] [2021-11-07 00:54:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:25,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:25,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:25,342 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:25,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:54:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:26,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:26,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:27,274 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 00:54:27,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:27,817 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 00:54:27,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:27,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224787379] [2021-11-07 00:54:27,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224787379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:27,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:27,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 00:54:27,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627791311] [2021-11-07 00:54:27,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:27,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:27,819 INFO L87 Difference]: Start difference. First operand 218 states and 281 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 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 00:54:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:32,484 INFO L93 Difference]: Finished difference Result 1027 states and 1341 transitions. [2021-11-07 00:54:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:54:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 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 70 [2021-11-07 00:54:32,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:32,491 INFO L225 Difference]: With dead ends: 1027 [2021-11-07 00:54:32,492 INFO L226 Difference]: Without dead ends: 1021 [2021-11-07 00:54:32,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:54:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-07 00:54:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 814. [2021-11-07 00:54:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 811 states have (on average 1.3045622688039458) internal successors, (1058), 813 states have internal predecessors, (1058), 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 00:54:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1058 transitions. [2021-11-07 00:54:32,546 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1058 transitions. Word has length 70 [2021-11-07 00:54:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:32,546 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1058 transitions. [2021-11-07 00:54:32,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 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 00:54:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1058 transitions. [2021-11-07 00:54:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 00:54:32,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:32,549 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:32,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:32,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:32,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash 841410824, now seen corresponding path program 1 times [2021-11-07 00:54:32,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:32,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032608717] [2021-11-07 00:54:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:32,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:32,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:32,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:54:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:33,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:33,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:34,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:34,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:34,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032608717] [2021-11-07 00:54:34,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032608717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:34,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:34,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:34,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691942688] [2021-11-07 00:54:34,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:34,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:34,528 INFO L87 Difference]: Start difference. First operand 814 states and 1058 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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) [2021-11-07 00:54:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:35,689 INFO L93 Difference]: Finished difference Result 3222 states and 4134 transitions. [2021-11-07 00:54:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:54:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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) Word has length 108 [2021-11-07 00:54:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:35,705 INFO L225 Difference]: With dead ends: 3222 [2021-11-07 00:54:35,705 INFO L226 Difference]: Without dead ends: 2414 [2021-11-07 00:54:35,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2021-11-07 00:54:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 822. [2021-11-07 00:54:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 819 states have (on average 1.3015873015873016) internal successors, (1066), 821 states have internal predecessors, (1066), 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 00:54:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1066 transitions. [2021-11-07 00:54:35,804 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1066 transitions. Word has length 108 [2021-11-07 00:54:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:35,805 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 1066 transitions. [2021-11-07 00:54:35,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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) [2021-11-07 00:54:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1066 transitions. [2021-11-07 00:54:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 00:54:35,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:35,807 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:35,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:36,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:36,023 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1402572474, now seen corresponding path program 1 times [2021-11-07 00:54:36,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:36,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017399186] [2021-11-07 00:54:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:36,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:36,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:36,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:36,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:54:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:37,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:37,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:37,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:37,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:37,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017399186] [2021-11-07 00:54:37,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017399186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:37,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:37,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:54:37,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981417021] [2021-11-07 00:54:37,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:37,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:37,743 INFO L87 Difference]: Start difference. First operand 822 states and 1066 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 00:54:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:38,059 INFO L93 Difference]: Finished difference Result 1642 states and 2134 transitions. [2021-11-07 00:54:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-07 00:54:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:38,066 INFO L225 Difference]: With dead ends: 1642 [2021-11-07 00:54:38,066 INFO L226 Difference]: Without dead ends: 826 [2021-11-07 00:54:38,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 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 00:54:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-07 00:54:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2021-11-07 00:54:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 823 states have (on average 1.3001215066828675) internal successors, (1070), 825 states have internal predecessors, (1070), 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 00:54:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1070 transitions. [2021-11-07 00:54:38,137 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1070 transitions. Word has length 108 [2021-11-07 00:54:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:38,138 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1070 transitions. [2021-11-07 00:54:38,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 00:54:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1070 transitions. [2021-11-07 00:54:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 00:54:38,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:38,140 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:38,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:38,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:38,363 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:38,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2048389320, now seen corresponding path program 1 times [2021-11-07 00:54:38,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:38,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548386758] [2021-11-07 00:54:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:38,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:38,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:38,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:38,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:54:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:39,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:39,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:40,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:40,276 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:40,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548386758] [2021-11-07 00:54:40,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548386758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:40,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:40,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:40,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713460847] [2021-11-07 00:54:40,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:40,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:40,278 INFO L87 Difference]: Start difference. First operand 826 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 00:54:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:40,676 INFO L93 Difference]: Finished difference Result 3682 states and 4738 transitions. [2021-11-07 00:54:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 108 [2021-11-07 00:54:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:40,697 INFO L225 Difference]: With dead ends: 3682 [2021-11-07 00:54:40,698 INFO L226 Difference]: Without dead ends: 2862 [2021-11-07 00:54:40,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 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 00:54:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2021-11-07 00:54:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 834. [2021-11-07 00:54:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 831 states have (on average 1.2972322503008424) internal successors, (1078), 833 states have internal predecessors, (1078), 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 00:54:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1078 transitions. [2021-11-07 00:54:40,795 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1078 transitions. Word has length 108 [2021-11-07 00:54:40,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:40,796 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1078 transitions. [2021-11-07 00:54:40,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 00:54:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1078 transitions. [2021-11-07 00:54:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 00:54:40,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:40,801 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:40,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:41,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:41,015 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash -59233445, now seen corresponding path program 1 times [2021-11-07 00:54:41,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:41,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796012537] [2021-11-07 00:54:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:41,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:41,017 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:41,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:54:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:42,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:54:42,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:42,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:43,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:43,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796012537] [2021-11-07 00:54:43,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796012537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:43,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:43,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 00:54:43,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399989945] [2021-11-07 00:54:43,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:54:43,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:54:43,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:54:43,241 INFO L87 Difference]: Start difference. First operand 834 states and 1078 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:48,574 INFO L93 Difference]: Finished difference Result 4522 states and 5898 transitions. [2021-11-07 00:54:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 00:54:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 00:54:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:48,598 INFO L225 Difference]: With dead ends: 4522 [2021-11-07 00:54:48,598 INFO L226 Difference]: Without dead ends: 4094 [2021-11-07 00:54:48,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:54:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-11-07 00:54:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 850. [2021-11-07 00:54:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 847 states have (on average 1.2916174734356554) internal successors, (1094), 849 states have internal predecessors, (1094), 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 00:54:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1094 transitions. [2021-11-07 00:54:48,770 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1094 transitions. Word has length 109 [2021-11-07 00:54:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:48,771 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1094 transitions. [2021-11-07 00:54:48,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1094 transitions. [2021-11-07 00:54:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 00:54:48,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:48,774 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:48,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:48,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:48,995 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1742047542, now seen corresponding path program 1 times [2021-11-07 00:54:48,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:48,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114118959] [2021-11-07 00:54:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:48,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:48,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:48,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:49,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 00:54:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:50,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:50,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:50,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:51,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:51,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114118959] [2021-11-07 00:54:51,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114118959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:51,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:51,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:51,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429621485] [2021-11-07 00:54:51,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:51,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:51,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:51,201 INFO L87 Difference]: Start difference. First operand 850 states and 1094 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:52,035 INFO L93 Difference]: Finished difference Result 4132 states and 5328 transitions. [2021-11-07 00:54:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:54:52,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 00:54:52,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:52,055 INFO L225 Difference]: With dead ends: 4132 [2021-11-07 00:54:52,055 INFO L226 Difference]: Without dead ends: 3698 [2021-11-07 00:54:52,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-11-07 00:54:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 940. [2021-11-07 00:54:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 937 states have (on average 1.2860192102454642) internal successors, (1205), 939 states have internal predecessors, (1205), 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 00:54:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1205 transitions. [2021-11-07 00:54:52,223 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1205 transitions. Word has length 112 [2021-11-07 00:54:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:52,224 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1205 transitions. [2021-11-07 00:54:52,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1205 transitions. [2021-11-07 00:54:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 00:54:52,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:52,227 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:52,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:52,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:52,443 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash -379107822, now seen corresponding path program 1 times [2021-11-07 00:54:52,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:52,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708002314] [2021-11-07 00:54:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:52,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:52,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:52,446 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:52,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:54:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:53,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:53,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:54,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:54,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:54,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708002314] [2021-11-07 00:54:54,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708002314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:54,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:54,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:54,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925116823] [2021-11-07 00:54:54,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:54,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:54,384 INFO L87 Difference]: Start difference. First operand 940 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 00:54:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:54,838 INFO L93 Difference]: Finished difference Result 4150 states and 5320 transitions. [2021-11-07 00:54:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:54,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2021-11-07 00:54:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:54,855 INFO L225 Difference]: With dead ends: 4150 [2021-11-07 00:54:54,855 INFO L226 Difference]: Without dead ends: 3216 [2021-11-07 00:54:54,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 221 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 00:54:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2021-11-07 00:54:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 948. [2021-11-07 00:54:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 945 states have (on average 1.2835978835978836) internal successors, (1213), 947 states have internal predecessors, (1213), 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 00:54:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1213 transitions. [2021-11-07 00:54:55,040 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1213 transitions. Word has length 112 [2021-11-07 00:54:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:55,040 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1213 transitions. [2021-11-07 00:54:55,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 00:54:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1213 transitions. [2021-11-07 00:54:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 00:54:55,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:55,043 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:55,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:55,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:55,261 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1152777716, now seen corresponding path program 1 times [2021-11-07 00:54:55,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:55,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267331460] [2021-11-07 00:54:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:55,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:55,263 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:55,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 00:54:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:56,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:56,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:57,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:57,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:57,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267331460] [2021-11-07 00:54:57,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267331460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:57,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1886129403] [2021-11-07 00:54:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:57,639 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:57,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:54:57,641 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:54:57,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 00:54:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:59,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:59,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:59,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:00,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1886129403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:00,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23637404] [2021-11-07 00:55:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:00,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:00,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:00,041 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:00,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 00:55:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:01,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:01,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:01,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:01,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23637404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:01,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:55:01,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-07 00:55:01,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605976045] [2021-11-07 00:55:01,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:55:01,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:55:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:55:01,769 INFO L87 Difference]: Start difference. First operand 948 states and 1213 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 00:55:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:02,672 INFO L93 Difference]: Finished difference Result 3570 states and 4542 transitions. [2021-11-07 00:55:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:55:02,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 113 [2021-11-07 00:55:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:02,689 INFO L225 Difference]: With dead ends: 3570 [2021-11-07 00:55:02,689 INFO L226 Difference]: Without dead ends: 2628 [2021-11-07 00:55:02,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:55:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2021-11-07 00:55:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 1352. [2021-11-07 00:55:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1349 states have (on average 1.2609340252038548) internal successors, (1701), 1351 states have internal predecessors, (1701), 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 00:55:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1701 transitions. [2021-11-07 00:55:02,914 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1701 transitions. Word has length 113 [2021-11-07 00:55:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:02,914 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1701 transitions. [2021-11-07 00:55:02,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 00:55:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1701 transitions. [2021-11-07 00:55:02,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 00:55:02,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:02,918 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:02,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:03,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:03,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:03,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:03,535 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1295967451, now seen corresponding path program 1 times [2021-11-07 00:55:03,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:03,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101773592] [2021-11-07 00:55:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:03,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:03,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:03,538 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:03,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 00:55:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:05,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:55:05,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:05,561 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 00:55:05,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 133 treesize of output 37 [2021-11-07 00:55:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 00:55:05,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 00:55:08,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:08,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101773592] [2021-11-07 00:55:08,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101773592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:08,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:08,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 00:55:08,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882451808] [2021-11-07 00:55:08,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:55:08,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:55:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2021-11-07 00:55:08,254 INFO L87 Difference]: Start difference. First operand 1352 states and 1701 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 01:05:54,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:54,405 INFO L93 Difference]: Finished difference Result 5350 states and 6738 transitions. [2021-11-07 01:05:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:05:54,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 121 [2021-11-07 01:05:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:54,427 INFO L225 Difference]: With dead ends: 5350 [2021-11-07 01:05:54,428 INFO L226 Difference]: Without dead ends: 4004 [2021-11-07 01:05:54,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=50, Invalid=76, Unknown=6, NotChecked=0, Total=132 [2021-11-07 01:05:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2021-11-07 01:05:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 1440. [2021-11-07 01:05:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1437 states have (on average 1.2588726513569937) internal successors, (1809), 1439 states have internal predecessors, (1809), 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 01:05:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1809 transitions. [2021-11-07 01:05:54,714 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1809 transitions. Word has length 121 [2021-11-07 01:05:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:54,715 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1809 transitions. [2021-11-07 01:05:54,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 01:05:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1809 transitions. [2021-11-07 01:05:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 01:05:54,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:54,719 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:54,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:54,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:54,941 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:05:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1729646296, now seen corresponding path program 1 times [2021-11-07 01:05:54,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:54,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206865505] [2021-11-07 01:05:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:54,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:54,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:54,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:05:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:56,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:05:56,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:05:57,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:05:57,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:57,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206865505] [2021-11-07 01:05:57,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206865505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:57,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:57,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:05:57,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071364103] [2021-11-07 01:05:57,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:05:57,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:57,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:05:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:05:57,541 INFO L87 Difference]: Start difference. First operand 1440 states and 1809 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 01:05:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:58,259 INFO L93 Difference]: Finished difference Result 4268 states and 5369 transitions. [2021-11-07 01:05:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:05:58,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 01:05:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:58,270 INFO L225 Difference]: With dead ends: 4268 [2021-11-07 01:05:58,271 INFO L226 Difference]: Without dead ends: 2834 [2021-11-07 01:05:58,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:05:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-11-07 01:05:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1440. [2021-11-07 01:05:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1437 states have (on average 1.256089074460682) internal successors, (1805), 1439 states have internal predecessors, (1805), 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 01:05:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1805 transitions. [2021-11-07 01:05:58,544 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1805 transitions. Word has length 122 [2021-11-07 01:05:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:58,544 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1805 transitions. [2021-11-07 01:05:58,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 01:05:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1805 transitions. [2021-11-07 01:05:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 01:05:58,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:58,548 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:58,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:58,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:58,763 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:05:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash -117009171, now seen corresponding path program 1 times [2021-11-07 01:05:58,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:58,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069968654] [2021-11-07 01:05:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:58,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:58,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:58,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:58,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:06:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:00,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:00,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:01,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:02,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:02,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069968654] [2021-11-07 01:06:02,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069968654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:02,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:02,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:06:02,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354906365] [2021-11-07 01:06:02,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:02,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:06:02,141 INFO L87 Difference]: Start difference. First operand 1440 states and 1805 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 01:06:02,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:02,409 INFO L93 Difference]: Finished difference Result 2518 states and 3161 transitions. [2021-11-07 01:06:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:02,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 01:06:02,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:02,415 INFO L225 Difference]: With dead ends: 2518 [2021-11-07 01:06:02,415 INFO L226 Difference]: Without dead ends: 1768 [2021-11-07 01:06:02,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 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 01:06:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-07 01:06:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1764. [2021-11-07 01:06:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1761 states have (on average 1.2526973310618967) internal successors, (2206), 1763 states have internal predecessors, (2206), 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 01:06:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2206 transitions. [2021-11-07 01:06:02,703 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2206 transitions. Word has length 122 [2021-11-07 01:06:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:02,704 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 2206 transitions. [2021-11-07 01:06:02,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 01:06:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2206 transitions. [2021-11-07 01:06:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 01:06:02,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:02,707 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:02,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:02,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:02,923 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1936878407, now seen corresponding path program 1 times [2021-11-07 01:06:02,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:02,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068113174] [2021-11-07 01:06:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:02,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:02,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:02,925 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:02,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:06:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:05,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:05,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:05,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:05,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:05,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068113174] [2021-11-07 01:06:05,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068113174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:05,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:05,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:05,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790139388] [2021-11-07 01:06:05,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:05,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:05,850 INFO L87 Difference]: Start difference. First operand 1764 states and 2206 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 01:06:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:10,174 INFO L93 Difference]: Finished difference Result 2164 states and 2708 transitions. [2021-11-07 01:06:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 123 [2021-11-07 01:06:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:10,179 INFO L225 Difference]: With dead ends: 2164 [2021-11-07 01:06:10,180 INFO L226 Difference]: Without dead ends: 1768 [2021-11-07 01:06:10,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 242 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 01:06:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-07 01:06:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1764. [2021-11-07 01:06:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1761 states have (on average 1.249290176036343) internal successors, (2200), 1763 states have internal predecessors, (2200), 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 01:06:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2200 transitions. [2021-11-07 01:06:10,460 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2200 transitions. Word has length 123 [2021-11-07 01:06:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:10,460 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 2200 transitions. [2021-11-07 01:06:10,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 01:06:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2200 transitions. [2021-11-07 01:06:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 01:06:10,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:10,464 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:10,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-07 01:06:10,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:10,687 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:10,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1229629140, now seen corresponding path program 1 times [2021-11-07 01:06:10,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:10,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167272533] [2021-11-07 01:06:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:10,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:10,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:10,689 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:10,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:06:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:12,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:06:13,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:06:13,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:13,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167272533] [2021-11-07 01:06:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167272533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:13,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:13,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:06:13,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822350419] [2021-11-07 01:06:13,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:06:13,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:06:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:13,294 INFO L87 Difference]: Start difference. First operand 1764 states and 2200 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:14,553 INFO L93 Difference]: Finished difference Result 6355 states and 7989 transitions. [2021-11-07 01:06:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:06:14,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 01:06:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:14,560 INFO L225 Difference]: With dead ends: 6355 [2021-11-07 01:06:14,560 INFO L226 Difference]: Without dead ends: 4597 [2021-11-07 01:06:14,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:06:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2021-11-07 01:06:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 1410. [2021-11-07 01:06:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1407 states have (on average 1.2579957356076759) internal successors, (1770), 1409 states have internal predecessors, (1770), 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 01:06:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1770 transitions. [2021-11-07 01:06:14,837 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1770 transitions. Word has length 131 [2021-11-07 01:06:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:14,837 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 1770 transitions. [2021-11-07 01:06:14,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1770 transitions. [2021-11-07 01:06:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 01:06:14,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:14,840 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:14,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-07 01:06:15,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:15,063 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1082439858, now seen corresponding path program 1 times [2021-11-07 01:06:15,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:15,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573017696] [2021-11-07 01:06:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:15,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:15,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:15,067 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:15,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:06:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:17,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:06:17,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:06:18,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:18,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573017696] [2021-11-07 01:06:18,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573017696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:18,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:18,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:18,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333650927] [2021-11-07 01:06:18,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:18,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:18,087 INFO L87 Difference]: Start difference. First operand 1410 states and 1770 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 01:06:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:20,463 INFO L93 Difference]: Finished difference Result 3024 states and 3793 transitions. [2021-11-07 01:06:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 151 [2021-11-07 01:06:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:20,465 INFO L225 Difference]: With dead ends: 3024 [2021-11-07 01:06:20,465 INFO L226 Difference]: Without dead ends: 616 [2021-11-07 01:06:20,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 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 01:06:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-07 01:06:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-11-07 01:06:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.2439024390243902) internal successors, (765), 615 states have internal predecessors, (765), 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 01:06:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 765 transitions. [2021-11-07 01:06:20,551 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 765 transitions. Word has length 151 [2021-11-07 01:06:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:20,551 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 765 transitions. [2021-11-07 01:06:20,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 01:06:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 765 transitions. [2021-11-07 01:06:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 01:06:20,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:20,552 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-11-07 01:06:20,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:20,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:20,755 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2146445079, now seen corresponding path program 1 times [2021-11-07 01:06:20,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:20,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160899803] [2021-11-07 01:06:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:20,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:20,758 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:06:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:23,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:06:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:25,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:26,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:26,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160899803] [2021-11-07 01:06:26,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160899803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:26,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [385669820] [2021-11-07 01:06:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:26,938 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:26,939 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:26,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:06:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:29,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:06:29,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:31,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:32,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [385669820] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:32,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416323861] [2021-11-07 01:06:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:32,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:32,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:32,844 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:32,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:06:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:06:34,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:36,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:39,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416323861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:39,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:06:39,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-07 01:06:39,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242160350] [2021-11-07 01:06:39,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:06:39,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:06:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:06:39,783 INFO L87 Difference]: Start difference. First operand 616 states and 765 transitions. Second operand has 20 states, 20 states have (on average 20.4) internal successors, (408), 19 states have internal predecessors, (408), 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 01:06:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:44,757 INFO L93 Difference]: Finished difference Result 3020 states and 3769 transitions. [2021-11-07 01:06:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 01:06:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.4) internal successors, (408), 19 states have internal predecessors, (408), 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 154 [2021-11-07 01:06:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:44,764 INFO L225 Difference]: With dead ends: 3020 [2021-11-07 01:06:44,764 INFO L226 Difference]: Without dead ends: 3006 [2021-11-07 01:06:44,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:06:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-07 01:06:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2988. [2021-11-07 01:06:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2987 states have (on average 1.244727150987613) internal successors, (3718), 2987 states have internal predecessors, (3718), 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 01:06:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 3718 transitions. [2021-11-07 01:06:45,131 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 3718 transitions. Word has length 154 [2021-11-07 01:06:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:45,132 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 3718 transitions. [2021-11-07 01:06:45,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.4) internal successors, (408), 19 states have internal predecessors, (408), 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 01:06:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 3718 transitions. [2021-11-07 01:06:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-07 01:06:45,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:45,136 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:45,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:45,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-07 01:06:45,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-07 01:06:45,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:45,737 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 64485224, now seen corresponding path program 2 times [2021-11-07 01:06:45,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:45,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046625669] [2021-11-07 01:06:45,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:06:45,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:45,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:45,740 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:45,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a16f7f97-bf7d-492d-9ff6-90e98331c830/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:06:49,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:06:49,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:06:49,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:06:49,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:49,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:49,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:49,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:49,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:49,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:49,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-11-07 01:06:50,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 105 [2021-11-07 01:06:50,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:50,723 INFO L244 Elim1Store]: Index analysis took 232 ms [2021-11-07 01:06:50,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 105 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 164 [2021-11-07 01:06:51,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:51,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:51,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 144 treesize of output 170 [2021-11-07 01:06:52,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:52,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:52,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:52,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:52,493 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:52,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 111 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 120 treesize of output 171 [2021-11-07 01:06:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-11-07 01:06:53,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:55,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:55,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-11-07 01:06:56,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1213 treesize of output 1133