./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0996d70f204c5713a65b04e25037e48d7532ec1ba0c10162e12c5c0d518b4e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:38:27,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:38:27,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:38:27,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:38:27,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:38:27,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:38:27,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:38:27,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:38:27,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:38:28,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:38:28,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:38:28,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:38:28,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:38:28,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:38:28,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:38:28,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:38:28,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:38:28,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:38:28,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:38:28,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:38:28,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:38:28,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:38:28,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:38:28,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:38:28,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:38:28,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:38:28,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:38:28,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:38:28,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:38:28,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:38:28,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:38:28,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:38:28,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:38:28,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:38:28,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:38:28,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:38:28,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:38:28,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:38:28,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:38:28,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:38:28,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:38:28,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:38:28,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:38:28,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:38:28,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:38:28,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:38:28,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:38:28,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:38:28,072 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:38:28,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:38:28,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:38:28,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:38:28,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:38:28,074 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:38:28,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:38:28,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:38:28,074 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:38:28,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:38:28,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:38:28,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:38:28,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:38:28,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:38:28,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:38:28,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:38:28,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:38:28,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:38:28,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:38:28,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:38:28,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:38:28,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:38:28,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:38:28,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:38:28,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:38:28,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:38:28,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:38:28,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:38:28,081 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:38:28,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:38:28,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:38:28,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:38:28,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:38:28,082 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0996d70f204c5713a65b04e25037e48d7532ec1ba0c10162e12c5c0d518b4e3 [2021-11-03 05:38:28,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:38:28,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:38:28,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:38:28,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:38:28,355 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:38:28,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2021-11-03 05:38:28,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/833db6e53/19e0f2ce022948089495265197b9c24e/FLAG9ebfab277 [2021-11-03 05:38:29,186 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:38:29,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2021-11-03 05:38:29,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/833db6e53/19e0f2ce022948089495265197b9c24e/FLAG9ebfab277 [2021-11-03 05:38:29,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/833db6e53/19e0f2ce022948089495265197b9c24e [2021-11-03 05:38:29,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:38:29,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:38:29,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:29,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:38:29,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:38:29,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:29,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3821c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:29, skipping insertion in model container [2021-11-03 05:38:29,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:29" (1/1) ... [2021-11-03 05:38:29,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:38:29,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:38:30,281 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c[84645,84658] [2021-11-03 05:38:30,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:30,747 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:38:30,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67eff80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:30, skipping insertion in model container [2021-11-03 05:38:30,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:30,748 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:38:30,751 INFO L168 Benchmark]: Toolchain (without parser) took 1409.62 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.7 MB in the beginning and 50.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:30,751 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:38:30,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1407.02 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.4 MB in the beginning and 50.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:38:30,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1407.02 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.4 MB in the beginning and 50.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2190]: 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0996d70f204c5713a65b04e25037e48d7532ec1ba0c10162e12c5c0d518b4e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:38:32,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:38:32,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:38:32,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:38:32,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:38:32,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:38:32,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:38:33,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:38:33,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:38:33,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:38:33,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:38:33,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:38:33,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:38:33,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:38:33,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:38:33,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:38:33,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:38:33,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:38:33,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:38:33,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:38:33,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:38:33,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:38:33,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:38:33,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:38:33,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:38:33,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:38:33,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:38:33,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:38:33,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:38:33,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:38:33,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:38:33,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:38:33,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:38:33,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:38:33,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:38:33,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:38:33,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:38:33,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:38:33,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:38:33,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:38:33,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:38:33,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:38:33,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:38:33,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:38:33,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:38:33,086 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:38:33,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:38:33,087 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:38:33,089 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:38:33,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:38:33,090 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:38:33,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:38:33,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:38:33,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:38:33,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:38:33,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:38:33,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:38:33,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:38:33,094 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:38:33,094 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:38:33,094 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:38:33,094 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:38:33,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:38:33,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:38:33,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:38:33,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:38:33,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:38:33,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:38:33,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:38:33,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:38:33,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:38:33,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:38:33,097 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:38:33,097 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:38:33,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:38:33,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:38:33,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:38:33,098 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0996d70f204c5713a65b04e25037e48d7532ec1ba0c10162e12c5c0d518b4e3 [2021-11-03 05:38:33,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:38:33,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:38:33,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:38:33,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:38:33,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:38:33,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2021-11-03 05:38:33,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/a72fd400a/24a2183d2072492dbe7034c09b75cd34/FLAGf0bcacfb6 [2021-11-03 05:38:34,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:38:34,556 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c [2021-11-03 05:38:34,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/a72fd400a/24a2183d2072492dbe7034c09b75cd34/FLAGf0bcacfb6 [2021-11-03 05:38:35,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/data/a72fd400a/24a2183d2072492dbe7034c09b75cd34 [2021-11-03 05:38:35,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:38:35,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:38:35,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:35,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:38:35,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:38:35,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:35" (1/1) ... [2021-11-03 05:38:35,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a63c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:35, skipping insertion in model container [2021-11-03 05:38:35,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:38:35" (1/1) ... [2021-11-03 05:38:35,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:38:35,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:38:35,928 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c[84645,84658] [2021-11-03 05:38:36,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:36,429 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:38:36,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:38:36,533 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c[84645,84658] [2021-11-03 05:38:36,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:36,727 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:38:36,836 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_dd06d1ea-7796-42b4-aaed-5572381ef8b9/sv-benchmarks/c/ntdrivers/diskperf.i.cil-1.c[84645,84658] [2021-11-03 05:38:36,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:38:37,069 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:38:37,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37 WrapperNode [2021-11-03 05:38:37,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:38:37,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:38:37,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:38:37,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:38:37,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:38:37,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:38:37,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:38:37,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:38:37,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:37,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:38:38,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:38:38,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:38:38,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:38:38,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (1/1) ... [2021-11-03 05:38:38,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:38:38,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:38:38,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:38:38,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:38:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 05:38:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 05:38:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 05:38:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 05:38:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:38:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:38:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:38:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 05:38:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 05:38:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:38:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:38:39,028 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,050 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,053 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,063 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,066 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,067 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,077 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,080 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,083 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,087 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,089 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,090 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,094 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,095 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,098 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,102 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,104 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,112 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,113 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,116 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,120 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:38:39,123 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:41:57,072 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##654: assume !false; [2021-11-03 05:41:57,072 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##653: assume false; [2021-11-03 05:41:57,073 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##683: assume false; [2021-11-03 05:41:57,073 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##684: assume !false; [2021-11-03 05:41:57,073 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##298: assume false; [2021-11-03 05:41:57,073 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##299: assume !false; [2021-11-03 05:41:57,074 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##205: assume !false; [2021-11-03 05:41:57,074 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume false; [2021-11-03 05:41:57,074 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume !false; [2021-11-03 05:41:57,074 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume false; [2021-11-03 05:41:57,075 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##239: assume false; [2021-11-03 05:41:57,075 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##240: assume !false; [2021-11-03 05:41:57,075 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##328: assume false; [2021-11-03 05:41:57,075 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##329: assume !false; [2021-11-03 05:41:57,075 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##359: assume false; [2021-11-03 05:41:57,076 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##360: assume !false; [2021-11-03 05:41:57,076 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##898: assume !false; [2021-11-03 05:41:57,076 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##897: assume false; [2021-11-03 05:41:57,076 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##419: assume !false; [2021-11-03 05:41:57,076 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##418: assume false; [2021-11-03 05:41:57,077 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##847: assume !false; [2021-11-03 05:41:57,077 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##846: assume false; [2021-11-03 05:41:57,077 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##816: assume false; [2021-11-03 05:41:57,077 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##817: assume !false; [2021-11-03 05:41:57,078 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1015: assume false; [2021-11-03 05:41:57,078 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1016: assume !false; [2021-11-03 05:41:57,078 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##449: assume !false; [2021-11-03 05:41:57,078 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##448: assume false; [2021-11-03 05:41:57,078 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##470: assume false; [2021-11-03 05:41:57,079 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##471: assume !false; [2021-11-03 05:41:57,079 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##529: assume false; [2021-11-03 05:41:57,079 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##530: assume !false; [2021-11-03 05:41:57,079 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##559: assume false; [2021-11-03 05:41:57,079 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##560: assume !false; [2021-11-03 05:41:57,080 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##959: assume false; [2021-11-03 05:41:57,080 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##960: assume !false; [2021-11-03 05:41:57,080 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##129: assume !false; [2021-11-03 05:41:57,080 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##128: assume false; [2021-11-03 05:41:57,081 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2021-11-03 05:41:57,081 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2021-11-03 05:41:57,081 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##147: assume !false; [2021-11-03 05:41:57,081 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##146: assume false; [2021-11-03 05:41:57,081 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##595: assume !false; [2021-11-03 05:41:57,081 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##594: assume false; [2021-11-03 05:41:57,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:41:57,101 INFO L299 CfgBuilder]: Removed 457 assume(true) statements. [2021-11-03 05:41:57,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:41:57 BoogieIcfgContainer [2021-11-03 05:41:57,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:41:57,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:41:57,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:41:57,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:41:57,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:38:35" (1/3) ... [2021-11-03 05:41:57,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626cac52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:41:57, skipping insertion in model container [2021-11-03 05:41:57,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:38:37" (2/3) ... [2021-11-03 05:41:57,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626cac52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:41:57, skipping insertion in model container [2021-11-03 05:41:57,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:41:57" (3/3) ... [2021-11-03 05:41:57,113 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf.i.cil-1.c [2021-11-03 05:41:57,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:41:57,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2021-11-03 05:41:57,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:41:57,176 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:41:57,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2021-11-03 05:41:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 784 states, 732 states have (on average 1.5833333333333333) internal successors, (1159), 783 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 05:41:57,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:57,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:57,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:41:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1843616715, now seen corresponding path program 1 times [2021-11-03 05:41:57,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:57,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124159902] [2021-11-03 05:41:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:57,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:57,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:57,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:41:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:59,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:41:59,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:59,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:59,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:59,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124159902] [2021-11-03 05:41:59,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124159902] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:59,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:59,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:41:59,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348256340] [2021-11-03 05:41:59,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:41:59,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:41:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:41:59,603 INFO L87 Difference]: Start difference. First operand has 784 states, 732 states have (on average 1.5833333333333333) internal successors, (1159), 783 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:59,717 INFO L93 Difference]: Finished difference Result 1564 states and 2311 transitions. [2021-11-03 05:41:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:41:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-11-03 05:41:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:59,740 INFO L225 Difference]: With dead ends: 1564 [2021-11-03 05:41:59,740 INFO L226 Difference]: Without dead ends: 779 [2021-11-03 05:41:59,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:41:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-11-03 05:41:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2021-11-03 05:41:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 728 states have (on average 1.473901098901099) internal successors, (1073), 778 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1073 transitions. [2021-11-03 05:41:59,879 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1073 transitions. Word has length 14 [2021-11-03 05:41:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:59,880 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 1073 transitions. [2021-11-03 05:41:59,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1073 transitions. [2021-11-03 05:41:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:41:59,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:59,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:59,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:00,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1968990969, now seen corresponding path program 1 times [2021-11-03 05:42:00,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:00,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800636112] [2021-11-03 05:42:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:00,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:00,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:00,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:00,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:42:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:02,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:42:02,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:02,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:02,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:02,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800636112] [2021-11-03 05:42:02,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800636112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:02,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:02,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:42:02,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382283110] [2021-11-03 05:42:02,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:42:02,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:42:02,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:42:02,413 INFO L87 Difference]: Start difference. First operand 779 states and 1073 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:04,936 INFO L93 Difference]: Finished difference Result 2336 states and 3220 transitions. [2021-11-03 05:42:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:42:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-11-03 05:42:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:04,948 INFO L225 Difference]: With dead ends: 2336 [2021-11-03 05:42:04,948 INFO L226 Difference]: Without dead ends: 1561 [2021-11-03 05:42:04,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:42:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-03 05:42:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 787. [2021-11-03 05:42:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 736 states have (on average 1.46875) internal successors, (1081), 786 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1081 transitions. [2021-11-03 05:42:04,998 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1081 transitions. Word has length 16 [2021-11-03 05:42:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:04,998 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 1081 transitions. [2021-11-03 05:42:04,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:04,999 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1081 transitions. [2021-11-03 05:42:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:42:05,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:05,000 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:05,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:05,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:05,215 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1473206755, now seen corresponding path program 1 times [2021-11-03 05:42:05,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:05,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261952498] [2021-11-03 05:42:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:05,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:05,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:05,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:05,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:42:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:07,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:07,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:07,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:07,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:07,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261952498] [2021-11-03 05:42:07,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261952498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:07,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030103432] [2021-11-03 05:42:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:07,817 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:07,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:07,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:07,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:42:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:09,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:09,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:09,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:09,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1030103432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:09,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:09,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:09,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043425933] [2021-11-03 05:42:09,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:09,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:09,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:09,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:09,907 INFO L87 Difference]: Start difference. First operand 787 states and 1081 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:13,178 INFO L93 Difference]: Finished difference Result 1644 states and 2282 transitions. [2021-11-03 05:42:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:13,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-03 05:42:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:13,186 INFO L225 Difference]: With dead ends: 1644 [2021-11-03 05:42:13,186 INFO L226 Difference]: Without dead ends: 1179 [2021-11-03 05:42:13,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-03 05:42:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1139. [2021-11-03 05:42:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1099 states have (on average 1.4549590536851684) internal successors, (1599), 1138 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1599 transitions. [2021-11-03 05:42:13,242 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1599 transitions. Word has length 24 [2021-11-03 05:42:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:13,243 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1599 transitions. [2021-11-03 05:42:13,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1599 transitions. [2021-11-03 05:42:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 05:42:13,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:13,245 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:13,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:13,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:13,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:13,667 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1000187321, now seen corresponding path program 1 times [2021-11-03 05:42:13,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:13,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741671005] [2021-11-03 05:42:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:13,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:13,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:13,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:13,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:42:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:15,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:15,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:15,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:16,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:16,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741671005] [2021-11-03 05:42:16,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741671005] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:16,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1519123184] [2021-11-03 05:42:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:16,191 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:16,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:16,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:16,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 05:42:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:17,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:17,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:17,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:18,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1519123184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:18,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:18,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:18,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668130351] [2021-11-03 05:42:18,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:18,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:18,073 INFO L87 Difference]: Start difference. First operand 1139 states and 1599 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:18,890 INFO L93 Difference]: Finished difference Result 1161 states and 1624 transitions. [2021-11-03 05:42:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 25 [2021-11-03 05:42:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:18,899 INFO L225 Difference]: With dead ends: 1161 [2021-11-03 05:42:18,899 INFO L226 Difference]: Without dead ends: 1139 [2021-11-03 05:42:18,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-03 05:42:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-11-03 05:42:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1099 states have (on average 1.454049135577798) internal successors, (1598), 1138 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1598 transitions. [2021-11-03 05:42:18,952 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1598 transitions. Word has length 25 [2021-11-03 05:42:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:18,952 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1598 transitions. [2021-11-03 05:42:18,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1598 transitions. [2021-11-03 05:42:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 05:42:18,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:18,960 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:42:18,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:19,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-03 05:42:19,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:19,383 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1478977812, now seen corresponding path program 1 times [2021-11-03 05:42:19,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:19,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485447918] [2021-11-03 05:42:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:19,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:19,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:19,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:19,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:42:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:21,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:21,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:21,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:21,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:21,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485447918] [2021-11-03 05:42:21,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485447918] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:21,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [44537762] [2021-11-03 05:42:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:21,944 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:21,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:21,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:21,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:42:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:23,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:23,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:23,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:24,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [44537762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:24,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:24,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:24,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054303999] [2021-11-03 05:42:24,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:24,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:24,149 INFO L87 Difference]: Start difference. First operand 1139 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:24,312 INFO L93 Difference]: Finished difference Result 1863 states and 2619 transitions. [2021-11-03 05:42:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:24,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 33 [2021-11-03 05:42:24,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:24,318 INFO L225 Difference]: With dead ends: 1863 [2021-11-03 05:42:24,318 INFO L226 Difference]: Without dead ends: 852 [2021-11-03 05:42:24,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-03 05:42:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2021-11-03 05:42:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 822 states have (on average 1.4355231143552312) internal successors, (1180), 851 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1180 transitions. [2021-11-03 05:42:24,369 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1180 transitions. Word has length 33 [2021-11-03 05:42:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:24,369 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1180 transitions. [2021-11-03 05:42:24,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1180 transitions. [2021-11-03 05:42:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:42:24,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:24,372 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:42:24,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:24,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:24,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:24,787 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash -567959460, now seen corresponding path program 1 times [2021-11-03 05:42:24,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:24,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128015253] [2021-11-03 05:42:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:24,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:24,791 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:24,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:42:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:26,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:26,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:27,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:27,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128015253] [2021-11-03 05:42:27,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128015253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:27,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1565324942] [2021-11-03 05:42:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:27,255 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:27,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:27,256 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:27,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:42:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:28,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:28,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:29,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:29,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1565324942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:29,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:29,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:29,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174699455] [2021-11-03 05:42:29,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:29,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:29,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:29,280 INFO L87 Difference]: Start difference. First operand 852 states and 1180 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:32,224 INFO L93 Difference]: Finished difference Result 874 states and 1207 transitions. [2021-11-03 05:42:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:32,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 34 [2021-11-03 05:42:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:32,231 INFO L225 Difference]: With dead ends: 874 [2021-11-03 05:42:32,231 INFO L226 Difference]: Without dead ends: 869 [2021-11-03 05:42:32,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-11-03 05:42:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 866. [2021-11-03 05:42:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 836 states have (on average 1.4354066985645932) internal successors, (1200), 865 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1200 transitions. [2021-11-03 05:42:32,275 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1200 transitions. Word has length 34 [2021-11-03 05:42:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:32,275 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1200 transitions. [2021-11-03 05:42:32,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1200 transitions. [2021-11-03 05:42:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:42:32,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:32,277 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:42:32,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:32,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:32,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:32,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -567404355, now seen corresponding path program 1 times [2021-11-03 05:42:32,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:32,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820694927] [2021-11-03 05:42:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:32,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:32,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:32,697 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:32,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:42:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:34,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:34,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:34,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:35,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:35,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820694927] [2021-11-03 05:42:35,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820694927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:35,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656634863] [2021-11-03 05:42:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:35,139 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:35,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:35,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:42:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:36,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:36,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:36,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:37,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656634863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:37,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:37,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:37,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869768777] [2021-11-03 05:42:37,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:37,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:37,043 INFO L87 Difference]: Start difference. First operand 866 states and 1200 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:37,336 INFO L93 Difference]: Finished difference Result 890 states and 1231 transitions. [2021-11-03 05:42:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 34 [2021-11-03 05:42:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:37,343 INFO L225 Difference]: With dead ends: 890 [2021-11-03 05:42:37,343 INFO L226 Difference]: Without dead ends: 859 [2021-11-03 05:42:37,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-03 05:42:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 844. [2021-11-03 05:42:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 815 states have (on average 1.4380368098159508) internal successors, (1172), 843 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1172 transitions. [2021-11-03 05:42:37,392 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1172 transitions. Word has length 34 [2021-11-03 05:42:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:37,393 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1172 transitions. [2021-11-03 05:42:37,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1172 transitions. [2021-11-03 05:42:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:42:37,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:37,394 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:42:37,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:37,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:37,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:37,808 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash 417309227, now seen corresponding path program 1 times [2021-11-03 05:42:37,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:37,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414057429] [2021-11-03 05:42:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:37,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:37,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:37,812 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:37,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:42:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:39,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:39,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:39,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:40,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:40,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414057429] [2021-11-03 05:42:40,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414057429] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:40,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1430540289] [2021-11-03 05:42:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:40,339 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:40,340 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:40,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:42:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:42,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:42:42,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:42,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:42,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1430540289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:42,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:42,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:42,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596704165] [2021-11-03 05:42:42,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:42,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:42,547 INFO L87 Difference]: Start difference. First operand 844 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:42,982 INFO L93 Difference]: Finished difference Result 1924 states and 2703 transitions. [2021-11-03 05:42:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 34 [2021-11-03 05:42:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:42,991 INFO L225 Difference]: With dead ends: 1924 [2021-11-03 05:42:42,991 INFO L226 Difference]: Without dead ends: 1325 [2021-11-03 05:42:42,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2021-11-03 05:42:43,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1012. [2021-11-03 05:42:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 989 states have (on average 1.4388270980788676) internal successors, (1423), 1011 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1423 transitions. [2021-11-03 05:42:43,057 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1423 transitions. Word has length 34 [2021-11-03 05:42:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:43,059 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1423 transitions. [2021-11-03 05:42:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1423 transitions. [2021-11-03 05:42:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:42:43,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:43,061 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:42:43,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:43,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:43,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:43,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 197894326, now seen corresponding path program 1 times [2021-11-03 05:42:43,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:43,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112171675] [2021-11-03 05:42:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:43,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:43,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:43,487 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:43,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:42:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:45,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:45,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:46,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:46,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112171675] [2021-11-03 05:42:46,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112171675] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:46,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [293049470] [2021-11-03 05:42:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:46,035 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:46,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:46,036 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:46,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:42:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:47,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:47,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:47,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [293049470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:48,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:48,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:42:48,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81270704] [2021-11-03 05:42:48,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:48,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:48,058 INFO L87 Difference]: Start difference. First operand 1012 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:50,953 INFO L93 Difference]: Finished difference Result 1012 states and 1423 transitions. [2021-11-03 05:42:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 34 [2021-11-03 05:42:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:50,961 INFO L225 Difference]: With dead ends: 1012 [2021-11-03 05:42:50,961 INFO L226 Difference]: Without dead ends: 1008 [2021-11-03 05:42:50,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-03 05:42:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-11-03 05:42:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 987 states have (on average 1.4376899696048633) internal successors, (1419), 1007 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1419 transitions. [2021-11-03 05:42:51,036 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1419 transitions. Word has length 34 [2021-11-03 05:42:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:51,036 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1419 transitions. [2021-11-03 05:42:51,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1419 transitions. [2021-11-03 05:42:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 05:42:51,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:51,038 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:42:51,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:51,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 05:42:51,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:51,454 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:42:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash -409293464, now seen corresponding path program 1 times [2021-11-03 05:42:51,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:51,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626903452] [2021-11-03 05:42:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:51,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:51,458 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:51,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:42:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:53,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:42:53,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:53,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:42:54,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:54,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626903452] [2021-11-03 05:42:54,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626903452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:42:54,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1843647087] [2021-11-03 05:42:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:54,055 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:54,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:42:54,056 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:42:54,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:42:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:55,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:42:55,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:56,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:42:56,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1843647087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:56,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:42:56,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:42:56,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459438880] [2021-11-03 05:42:56,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:42:56,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:42:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:42:56,708 INFO L87 Difference]: Start difference. First operand 1008 states and 1419 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:00,426 INFO L93 Difference]: Finished difference Result 1018 states and 1428 transitions. [2021-11-03 05:43:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:43:00,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 35 [2021-11-03 05:43:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:00,434 INFO L225 Difference]: With dead ends: 1018 [2021-11-03 05:43:00,434 INFO L226 Difference]: Without dead ends: 1013 [2021-11-03 05:43:00,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:43:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-11-03 05:43:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1008. [2021-11-03 05:43:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 987 states have (on average 1.4366767983789261) internal successors, (1418), 1007 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1418 transitions. [2021-11-03 05:43:00,507 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1418 transitions. Word has length 35 [2021-11-03 05:43:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:00,507 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1418 transitions. [2021-11-03 05:43:00,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1418 transitions. [2021-11-03 05:43:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 05:43:00,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:00,509 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:43:00,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:00,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-03 05:43:00,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:00,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:43:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash -336156501, now seen corresponding path program 1 times [2021-11-03 05:43:00,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:00,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846237523] [2021-11-03 05:43:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:00,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:00,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:00,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:43:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:02,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:02,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:03,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:03,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:03,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846237523] [2021-11-03 05:43:03,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846237523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:03,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344605855] [2021-11-03 05:43:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:03,603 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:03,612 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:03,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:43:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:05,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:43:05,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:05,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:06,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [344605855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:06,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:06,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:43:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090390571] [2021-11-03 05:43:06,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:43:06,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:43:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:43:06,269 INFO L87 Difference]: Start difference. First operand 1008 states and 1418 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:10,023 INFO L93 Difference]: Finished difference Result 1013 states and 1422 transitions. [2021-11-03 05:43:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:43:10,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 36 [2021-11-03 05:43:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:10,032 INFO L225 Difference]: With dead ends: 1013 [2021-11-03 05:43:10,032 INFO L226 Difference]: Without dead ends: 1008 [2021-11-03 05:43:10,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:43:10,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-03 05:43:10,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-11-03 05:43:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 987 states have (on average 1.4356636271529888) internal successors, (1417), 1007 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1417 transitions. [2021-11-03 05:43:10,100 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1417 transitions. Word has length 36 [2021-11-03 05:43:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:10,101 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1417 transitions. [2021-11-03 05:43:10,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1417 transitions. [2021-11-03 05:43:10,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 05:43:10,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:10,102 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:43:10,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:10,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:10,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:10,527 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:43:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2100093695, now seen corresponding path program 1 times [2021-11-03 05:43:10,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:10,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6396591] [2021-11-03 05:43:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:10,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:10,531 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:10,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:43:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:12,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:12,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:12,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:13,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:13,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6396591] [2021-11-03 05:43:13,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6396591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:13,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1627050330] [2021-11-03 05:43:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:13,116 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:13,116 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:13,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:43:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:15,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:43:15,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:15,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:15,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1627050330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:15,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:15,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:43:15,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947713994] [2021-11-03 05:43:15,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:43:15,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:15,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:43:15,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:43:15,497 INFO L87 Difference]: Start difference. First operand 1008 states and 1417 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:17,758 INFO L93 Difference]: Finished difference Result 1021 states and 1430 transitions. [2021-11-03 05:43:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:43:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 37 [2021-11-03 05:43:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:17,765 INFO L225 Difference]: With dead ends: 1021 [2021-11-03 05:43:17,765 INFO L226 Difference]: Without dead ends: 1004 [2021-11-03 05:43:17,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:43:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-03 05:43:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-11-03 05:43:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 983 states have (on average 1.4364191251271619) internal successors, (1412), 1003 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1412 transitions. [2021-11-03 05:43:17,844 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1412 transitions. Word has length 37 [2021-11-03 05:43:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:17,845 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1412 transitions. [2021-11-03 05:43:17,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1412 transitions. [2021-11-03 05:43:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 05:43:17,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:17,846 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:43:17,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:18,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:18,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:43:18,259 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:43:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1746610256, now seen corresponding path program 1 times [2021-11-03 05:43:18,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:18,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789974597] [2021-11-03 05:43:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:18,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:18,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:18,263 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:18,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-03 05:43:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:20,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:20,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:21,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:21,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789974597] [2021-11-03 05:43:21,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789974597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:21,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [387061232] [2021-11-03 05:43:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:21,104 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:21,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:21,109 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:21,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-03 05:43:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:23,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:43:23,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:23,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:23,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [387061232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:23,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:23,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:43:23,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218523355] [2021-11-03 05:43:23,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:23,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:43:23,378 INFO L87 Difference]: Start difference. First operand 1004 states and 1412 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:26,361 INFO L93 Difference]: Finished difference Result 1431 states and 2013 transitions. [2021-11-03 05:43:26,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:26,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-03 05:43:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:26,371 INFO L225 Difference]: With dead ends: 1431 [2021-11-03 05:43:26,371 INFO L226 Difference]: Without dead ends: 1423 [2021-11-03 05:43:26,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:43:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-11-03 05:43:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1018. [2021-11-03 05:43:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 997 states have (on average 1.4322968906720162) internal successors, (1428), 1017 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1428 transitions. [2021-11-03 05:43:26,459 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1428 transitions. Word has length 40 [2021-11-03 05:43:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:26,459 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1428 transitions. [2021-11-03 05:43:26,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1428 transitions. [2021-11-03 05:43:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 05:43:26,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:26,461 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:43:26,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:26,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:26,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:43:26,876 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:43:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1956838365, now seen corresponding path program 1 times [2021-11-03 05:43:26,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:26,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290476921] [2021-11-03 05:43:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:26,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:26,880 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:26,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 05:43:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:28,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:28,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:29,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:29,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:29,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290476921] [2021-11-03 05:43:29,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290476921] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:29,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141208739] [2021-11-03 05:43:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:29,621 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:29,622 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:29,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-03 05:43:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:31,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:43:31,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:32,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:32,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141208739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:32,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:32,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7, 7] total 18 [2021-11-03 05:43:32,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681073907] [2021-11-03 05:43:32,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:43:32,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:32,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:43:32,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:43:32,482 INFO L87 Difference]: Start difference. First operand 1018 states and 1428 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:35,287 INFO L93 Difference]: Finished difference Result 1058 states and 1470 transitions. [2021-11-03 05:43:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:43:35,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 05:43:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:35,293 INFO L225 Difference]: With dead ends: 1058 [2021-11-03 05:43:35,293 INFO L226 Difference]: Without dead ends: 987 [2021-11-03 05:43:35,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:43:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-11-03 05:43:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2021-11-03 05:43:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 966 states have (on average 1.4337474120082816) internal successors, (1385), 986 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1385 transitions. [2021-11-03 05:43:35,373 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1385 transitions. Word has length 41 [2021-11-03 05:43:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:35,374 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1385 transitions. [2021-11-03 05:43:35,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1385 transitions. [2021-11-03 05:43:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 05:43:35,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:35,375 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:43:35,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:35,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:35,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:43:35,792 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:43:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1707249440, now seen corresponding path program 1 times [2021-11-03 05:43:35,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:35,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090343366] [2021-11-03 05:43:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:35,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:35,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:35,796 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:35,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 05:43:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:37,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:37,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:38,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:38,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:38,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090343366] [2021-11-03 05:43:38,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090343366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:38,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [696526011] [2021-11-03 05:43:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:38,603 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:38,604 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:38,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-03 05:43:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:40,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:43:40,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:41,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:41,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [696526011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:41,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:41,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:43:41,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577280622] [2021-11-03 05:43:41,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:43:41,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:43:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:43:41,507 INFO L87 Difference]: Start difference. First operand 987 states and 1385 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:45,492 INFO L93 Difference]: Finished difference Result 1403 states and 1971 transitions. [2021-11-03 05:43:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:43:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 41 [2021-11-03 05:43:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:45,500 INFO L225 Difference]: With dead ends: 1403 [2021-11-03 05:43:45,501 INFO L226 Difference]: Without dead ends: 1395 [2021-11-03 05:43:45,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:43:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-11-03 05:43:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 987. [2021-11-03 05:43:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 966 states have (on average 1.4327122153209109) internal successors, (1384), 986 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1384 transitions. [2021-11-03 05:43:45,580 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1384 transitions. Word has length 41 [2021-11-03 05:43:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:45,581 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1384 transitions. [2021-11-03 05:43:45,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1384 transitions. [2021-11-03 05:43:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:43:45,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:45,582 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:43:45,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:45,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:45,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:45,995 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:43:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash 851806603, now seen corresponding path program 1 times [2021-11-03 05:43:45,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:45,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51955128] [2021-11-03 05:43:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:46,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:46,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:46,001 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:46,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-03 05:43:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:48,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:48,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:48,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:43:48,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:48,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51955128] [2021-11-03 05:43:48,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51955128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:48,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1630991357] [2021-11-03 05:43:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:48,939 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:48,944 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:48,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-03 05:43:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:51,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:43:51,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:51,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:43:51,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1630991357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:51,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:51,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-11-03 05:43:51,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222453661] [2021-11-03 05:43:51,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:43:51,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:51,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:43:51,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:43:51,610 INFO L87 Difference]: Start difference. First operand 987 states and 1384 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:04,145 INFO L93 Difference]: Finished difference Result 1029 states and 1429 transitions. [2021-11-03 05:44:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:44:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 05:44:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:04,151 INFO L225 Difference]: With dead ends: 1029 [2021-11-03 05:44:04,151 INFO L226 Difference]: Without dead ends: 1026 [2021-11-03 05:44:04,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:44:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-11-03 05:44:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 994. [2021-11-03 05:44:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 973 states have (on average 1.4306269270298047) internal successors, (1392), 993 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1392 transitions. [2021-11-03 05:44:04,242 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1392 transitions. Word has length 42 [2021-11-03 05:44:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:04,243 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 1392 transitions. [2021-11-03 05:44:04,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1392 transitions. [2021-11-03 05:44:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:44:04,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:04,244 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:44:04,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:04,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:04,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:04,667 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:44:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 851794687, now seen corresponding path program 1 times [2021-11-03 05:44:04,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:04,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25286554] [2021-11-03 05:44:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:04,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:04,671 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:04,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-03 05:44:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:06,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:44:06,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:07,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:07,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:07,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25286554] [2021-11-03 05:44:07,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25286554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:07,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [150688332] [2021-11-03 05:44:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:07,534 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:07,535 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:07,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-03 05:44:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:09,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:44:09,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:10,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:10,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [150688332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:10,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:10,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:44:10,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441431399] [2021-11-03 05:44:10,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:44:10,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:44:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:44:10,704 INFO L87 Difference]: Start difference. First operand 994 states and 1392 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:14,667 INFO L93 Difference]: Finished difference Result 1401 states and 1971 transitions. [2021-11-03 05:44:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:44:14,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 05:44:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:14,675 INFO L225 Difference]: With dead ends: 1401 [2021-11-03 05:44:14,675 INFO L226 Difference]: Without dead ends: 1377 [2021-11-03 05:44:14,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:44:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-11-03 05:44:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 977. [2021-11-03 05:44:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 956 states have (on average 1.4341004184100419) internal successors, (1371), 976 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1371 transitions. [2021-11-03 05:44:14,758 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1371 transitions. Word has length 42 [2021-11-03 05:44:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:14,759 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1371 transitions. [2021-11-03 05:44:14,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1371 transitions. [2021-11-03 05:44:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:44:14,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:14,760 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:44:14,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:14,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-03 05:44:15,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:44:15,167 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:44:15,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:15,167 INFO L85 PathProgramCache]: Analyzing trace with hash 469961159, now seen corresponding path program 1 times [2021-11-03 05:44:15,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:15,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985375625] [2021-11-03 05:44:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:15,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:15,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:15,171 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:15,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-03 05:44:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:17,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:44:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:17,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:18,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:18,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985375625] [2021-11-03 05:44:18,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985375625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:18,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1844403951] [2021-11-03 05:44:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:18,119 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:18,120 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:18,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-03 05:44:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:20,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:44:20,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:20,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:20,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1844403951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:20,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:20,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-11-03 05:44:20,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240733679] [2021-11-03 05:44:20,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:44:20,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:44:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:44:20,866 INFO L87 Difference]: Start difference. First operand 977 states and 1371 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:33,135 INFO L93 Difference]: Finished difference Result 1018 states and 1415 transitions. [2021-11-03 05:44:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:44:33,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:44:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:33,141 INFO L225 Difference]: With dead ends: 1018 [2021-11-03 05:44:33,141 INFO L226 Difference]: Without dead ends: 994 [2021-11-03 05:44:33,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:44:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-11-03 05:44:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 965. [2021-11-03 05:44:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 944 states have (on average 1.4364406779661016) internal successors, (1356), 964 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1356 transitions. [2021-11-03 05:44:33,237 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1356 transitions. Word has length 44 [2021-11-03 05:44:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:33,237 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1356 transitions. [2021-11-03 05:44:33,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1356 transitions. [2021-11-03 05:44:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:44:33,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:33,239 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:44:33,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:33,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:33,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:33,655 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:44:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash -663513502, now seen corresponding path program 1 times [2021-11-03 05:44:33,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:33,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157004705] [2021-11-03 05:44:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:33,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:33,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:33,659 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:33,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-03 05:44:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:35,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:44:35,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:36,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:36,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157004705] [2021-11-03 05:44:36,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157004705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1414366372] [2021-11-03 05:44:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:36,724 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:36,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:36,725 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:36,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-03 05:44:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:38,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:44:39,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:39,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:39,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1414366372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:39,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:39,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:44:39,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740222795] [2021-11-03 05:44:39,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:39,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:44:39,277 INFO L87 Difference]: Start difference. First operand 965 states and 1356 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:40,384 INFO L93 Difference]: Finished difference Result 1591 states and 2251 transitions. [2021-11-03 05:44:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 45 [2021-11-03 05:44:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:40,393 INFO L225 Difference]: With dead ends: 1591 [2021-11-03 05:44:40,393 INFO L226 Difference]: Without dead ends: 1579 [2021-11-03 05:44:40,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:44:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-03 05:44:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1003. [2021-11-03 05:44:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 982 states have (on average 1.4389002036659877) internal successors, (1413), 1002 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1413 transitions. [2021-11-03 05:44:40,479 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1413 transitions. Word has length 45 [2021-11-03 05:44:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:40,479 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1413 transitions. [2021-11-03 05:44:40,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1413 transitions. [2021-11-03 05:44:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:44:40,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:40,480 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:44:40,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:40,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-03 05:44:40,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:44:40,881 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:44:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1636116843, now seen corresponding path program 1 times [2021-11-03 05:44:40,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:40,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125692823] [2021-11-03 05:44:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:40,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:40,885 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:40,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-03 05:44:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:43,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:44:43,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:43,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:43,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:43,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125692823] [2021-11-03 05:44:43,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125692823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:43,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1674557288] [2021-11-03 05:44:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:43,835 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:43,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:43,838 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:43,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-11-03 05:44:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:46,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:44:46,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:46,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:47,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1674557288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:47,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:47,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:44:47,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785121059] [2021-11-03 05:44:47,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:44:47,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:47,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:44:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:44:47,042 INFO L87 Difference]: Start difference. First operand 1003 states and 1413 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:50,870 INFO L93 Difference]: Finished difference Result 1008 states and 1417 transitions. [2021-11-03 05:44:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:44:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 45 [2021-11-03 05:44:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:50,876 INFO L225 Difference]: With dead ends: 1008 [2021-11-03 05:44:50,876 INFO L226 Difference]: Without dead ends: 989 [2021-11-03 05:44:50,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:44:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-03 05:44:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2021-11-03 05:44:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 968 states have (on average 1.4421487603305785) internal successors, (1396), 988 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1396 transitions. [2021-11-03 05:44:50,981 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1396 transitions. Word has length 45 [2021-11-03 05:44:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:50,981 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1396 transitions. [2021-11-03 05:44:50,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1396 transitions. [2021-11-03 05:44:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:44:50,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:50,982 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:44:50,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:51,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-03 05:44:51,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:44:51,399 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:44:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash 842210037, now seen corresponding path program 1 times [2021-11-03 05:44:51,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:51,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025137602] [2021-11-03 05:44:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:51,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:51,404 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:51,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-03 05:44:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:53,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:44:53,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:54,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:44:54,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:54,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025137602] [2021-11-03 05:44:54,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025137602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:54,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [886672135] [2021-11-03 05:44:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:54,450 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:54,451 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:54,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-03 05:44:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:56,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:44:56,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:57,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:44:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [886672135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:57,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:57,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:44:57,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929686994] [2021-11-03 05:44:57,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:44:57,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:44:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:44:57,637 INFO L87 Difference]: Start difference. First operand 989 states and 1396 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:00,799 INFO L93 Difference]: Finished difference Result 1018 states and 1427 transitions. [2021-11-03 05:45:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:00,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 45 [2021-11-03 05:45:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:00,804 INFO L225 Difference]: With dead ends: 1018 [2021-11-03 05:45:00,804 INFO L226 Difference]: Without dead ends: 987 [2021-11-03 05:45:00,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:45:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-11-03 05:45:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2021-11-03 05:45:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 966 states have (on average 1.4389233954451346) internal successors, (1390), 986 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1390 transitions. [2021-11-03 05:45:00,878 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1390 transitions. Word has length 45 [2021-11-03 05:45:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:00,879 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1390 transitions. [2021-11-03 05:45:00,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1390 transitions. [2021-11-03 05:45:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:45:00,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:00,880 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:45:00,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:01,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:01,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:01,295 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:45:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1254515723, now seen corresponding path program 1 times [2021-11-03 05:45:01,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:01,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039279637] [2021-11-03 05:45:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:01,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:01,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:01,299 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:01,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-03 05:45:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:03,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:03,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:03,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:04,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:04,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039279637] [2021-11-03 05:45:04,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039279637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:04,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2038018780] [2021-11-03 05:45:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:04,326 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:04,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:04,333 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-03 05:45:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:06,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:06,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2038018780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:07,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:07,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:45:07,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413928321] [2021-11-03 05:45:07,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:45:07,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:45:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:45:07,032 INFO L87 Difference]: Start difference. First operand 987 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:10,043 INFO L93 Difference]: Finished difference Result 1413 states and 1995 transitions. [2021-11-03 05:45:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:45:10,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 45 [2021-11-03 05:45:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:10,053 INFO L225 Difference]: With dead ends: 1413 [2021-11-03 05:45:10,053 INFO L226 Difference]: Without dead ends: 1399 [2021-11-03 05:45:10,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:45:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2021-11-03 05:45:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 981. [2021-11-03 05:45:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 961 states have (on average 1.4380853277835588) internal successors, (1382), 980 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1382 transitions. [2021-11-03 05:45:10,125 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1382 transitions. Word has length 45 [2021-11-03 05:45:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:10,125 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1382 transitions. [2021-11-03 05:45:10,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1382 transitions. [2021-11-03 05:45:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:45:10,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:10,126 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:45:10,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:10,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:10,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:10,527 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:45:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 898259305, now seen corresponding path program 1 times [2021-11-03 05:45:10,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:10,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423073800] [2021-11-03 05:45:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:10,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:10,530 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:10,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-03 05:45:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:13,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:13,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:13,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:13,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:13,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423073800] [2021-11-03 05:45:13,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423073800] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:13,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085243541] [2021-11-03 05:45:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:13,738 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:13,743 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:13,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2021-11-03 05:45:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:16,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:16,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:16,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:16,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2085243541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:16,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 14 [2021-11-03 05:45:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229765550] [2021-11-03 05:45:16,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:45:16,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:45:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:45:16,591 INFO L87 Difference]: Start difference. First operand 981 states and 1382 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:21,251 INFO L93 Difference]: Finished difference Result 1303 states and 1823 transitions. [2021-11-03 05:45:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:45:21,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 46 [2021-11-03 05:45:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:21,257 INFO L225 Difference]: With dead ends: 1303 [2021-11-03 05:45:21,257 INFO L226 Difference]: Without dead ends: 752 [2021-11-03 05:45:21,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:45:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-03 05:45:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 749. [2021-11-03 05:45:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 729 states have (on average 1.4156378600823045) internal successors, (1032), 748 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1032 transitions. [2021-11-03 05:45:21,317 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1032 transitions. Word has length 46 [2021-11-03 05:45:21,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:21,317 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1032 transitions. [2021-11-03 05:45:21,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1032 transitions. [2021-11-03 05:45:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:45:21,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:21,318 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:45:21,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:21,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-11-03 05:45:21,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:21,723 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:45:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1550699882, now seen corresponding path program 1 times [2021-11-03 05:45:21,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:21,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417362880] [2021-11-03 05:45:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:21,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:21,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:21,729 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:21,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-03 05:45:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:24,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:24,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:24,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:24,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:24,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417362880] [2021-11-03 05:45:24,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417362880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:24,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794617969] [2021-11-03 05:45:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:24,917 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:24,918 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:24,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-11-03 05:45:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:27,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:27,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:27,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:27,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1794617969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:27,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:27,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:45:27,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928973489] [2021-11-03 05:45:27,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:45:27,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:27,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:45:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:45:27,825 INFO L87 Difference]: Start difference. First operand 749 states and 1032 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:30,535 INFO L93 Difference]: Finished difference Result 1364 states and 1895 transitions. [2021-11-03 05:45:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:45:30,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 05:45:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:30,540 INFO L225 Difference]: With dead ends: 1364 [2021-11-03 05:45:30,540 INFO L226 Difference]: Without dead ends: 771 [2021-11-03 05:45:30,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:45:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-03 05:45:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2021-11-03 05:45:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 753 states have (on average 1.4130146082337318) internal successors, (1064), 770 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1064 transitions. [2021-11-03 05:45:30,652 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1064 transitions. Word has length 46 [2021-11-03 05:45:30,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:30,653 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1064 transitions. [2021-11-03 05:45:30,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1064 transitions. [2021-11-03 05:45:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:45:30,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:30,653 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:45:30,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:30,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:31,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:31,054 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:45:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash -217689221, now seen corresponding path program 1 times [2021-11-03 05:45:31,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:31,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68732375] [2021-11-03 05:45:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:31,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:31,058 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:31,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-03 05:45:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:33,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:33,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:33,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:34,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:34,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68732375] [2021-11-03 05:45:34,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68732375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:34,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [467104799] [2021-11-03 05:45:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:34,223 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:34,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:34,224 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:34,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2021-11-03 05:45:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:36,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:36,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:37,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:37,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [467104799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:37,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:37,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-11-03 05:45:37,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688186012] [2021-11-03 05:45:37,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:45:37,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:45:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:45:37,317 INFO L87 Difference]: Start difference. First operand 771 states and 1064 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:48,977 INFO L93 Difference]: Finished difference Result 785 states and 1078 transitions. [2021-11-03 05:45:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:45:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 05:45:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:48,980 INFO L225 Difference]: With dead ends: 785 [2021-11-03 05:45:48,981 INFO L226 Difference]: Without dead ends: 782 [2021-11-03 05:45:48,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:45:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-03 05:45:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 777. [2021-11-03 05:45:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 759 states have (on average 1.4110671936758894) internal successors, (1071), 776 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1071 transitions. [2021-11-03 05:45:49,046 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1071 transitions. Word has length 46 [2021-11-03 05:45:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:49,046 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 1071 transitions. [2021-11-03 05:45:49,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1071 transitions. [2021-11-03 05:45:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:45:49,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:49,048 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:45:49,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:49,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:49,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:49,456 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:45:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash -217701137, now seen corresponding path program 1 times [2021-11-03 05:45:49,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:49,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101548990] [2021-11-03 05:45:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:49,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:49,460 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:49,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-03 05:45:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:51,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:51,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:52,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:45:52,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:52,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101548990] [2021-11-03 05:45:52,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101548990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:52,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344934599] [2021-11-03 05:45:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:52,640 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:52,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:52,641 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:52,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2021-11-03 05:45:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:55,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:45:55,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:55,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:45:56,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1344934599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:56,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:56,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7, 7] total 18 [2021-11-03 05:45:56,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051786132] [2021-11-03 05:45:56,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:56,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:56,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:45:56,388 INFO L87 Difference]: Start difference. First operand 777 states and 1071 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:02,464 INFO L93 Difference]: Finished difference Result 1026 states and 1420 transitions. [2021-11-03 05:46:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:46:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 05:46:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:02,468 INFO L225 Difference]: With dead ends: 1026 [2021-11-03 05:46:02,468 INFO L226 Difference]: Without dead ends: 999 [2021-11-03 05:46:02,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:46:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-03 05:46:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 755. [2021-11-03 05:46:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 737 states have (on average 1.4165535956580733) internal successors, (1044), 754 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1044 transitions. [2021-11-03 05:46:02,561 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1044 transitions. Word has length 46 [2021-11-03 05:46:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:02,562 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 1044 transitions. [2021-11-03 05:46:02,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1044 transitions. [2021-11-03 05:46:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:46:02,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:02,563 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:46:02,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:02,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:02,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:02,971 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:46:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 30200526, now seen corresponding path program 1 times [2021-11-03 05:46:02,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:02,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77623833] [2021-11-03 05:46:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:02,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:02,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:02,975 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:02,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-03 05:46:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:05,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:46:05,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:06,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77623833] [2021-11-03 05:46:06,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77623833] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1539857315] [2021-11-03 05:46:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:06,388 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:06,389 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:06,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2021-11-03 05:46:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:46:09,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:09,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:09,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1539857315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:09,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:09,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7, 7] total 17 [2021-11-03 05:46:09,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305414467] [2021-11-03 05:46:09,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:46:09,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:46:09,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:46:09,713 INFO L87 Difference]: Start difference. First operand 755 states and 1044 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:24,500 INFO L93 Difference]: Finished difference Result 755 states and 1044 transitions. [2021-11-03 05:46:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:46:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 49 [2021-11-03 05:46:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:24,502 INFO L225 Difference]: With dead ends: 755 [2021-11-03 05:46:24,502 INFO L226 Difference]: Without dead ends: 728 [2021-11-03 05:46:24,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:46:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-03 05:46:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-03 05:46:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 711 states have (on average 1.4261603375527425) internal successors, (1014), 727 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1014 transitions. [2021-11-03 05:46:24,566 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1014 transitions. Word has length 49 [2021-11-03 05:46:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:24,567 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 1014 transitions. [2021-11-03 05:46:24,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1014 transitions. [2021-11-03 05:46:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:46:24,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:24,568 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:46:24,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:24,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2021-11-03 05:46:24,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:24,971 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:46:24,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -85285071, now seen corresponding path program 1 times [2021-11-03 05:46:24,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:24,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980180355] [2021-11-03 05:46:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:24,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:24,976 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:24,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-03 05:46:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:27,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:46:27,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:27,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:28,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:28,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980180355] [2021-11-03 05:46:28,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980180355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:28,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2005490752] [2021-11-03 05:46:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:28,392 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:28,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:28,393 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:28,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2021-11-03 05:46:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:31,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:31,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:31,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:31,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2005490752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:31,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:31,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:46:31,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87768427] [2021-11-03 05:46:31,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:31,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:46:31,570 INFO L87 Difference]: Start difference. First operand 728 states and 1014 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:34,183 INFO L93 Difference]: Finished difference Result 1493 states and 2072 transitions. [2021-11-03 05:46:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 50 [2021-11-03 05:46:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:34,185 INFO L225 Difference]: With dead ends: 1493 [2021-11-03 05:46:34,185 INFO L226 Difference]: Without dead ends: 888 [2021-11-03 05:46:34,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:46:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-03 05:46:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 686. [2021-11-03 05:46:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 675 states have (on average 1.3955555555555557) internal successors, (942), 685 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 942 transitions. [2021-11-03 05:46:34,246 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 942 transitions. Word has length 50 [2021-11-03 05:46:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:34,246 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 942 transitions. [2021-11-03 05:46:34,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 942 transitions. [2021-11-03 05:46:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 05:46:34,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:34,247 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:46:34,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2021-11-03 05:46:34,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:34,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:34,648 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:46:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash -813402836, now seen corresponding path program 1 times [2021-11-03 05:46:34,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:34,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725449927] [2021-11-03 05:46:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:34,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:34,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:34,652 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:34,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-11-03 05:46:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:37,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:46:37,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:37,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:38,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:38,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725449927] [2021-11-03 05:46:38,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725449927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:38,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [981865169] [2021-11-03 05:46:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:38,204 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:38,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:38,205 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:38,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2021-11-03 05:46:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:41,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:46:41,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:41,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:41,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [981865169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:41,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:41,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 14 [2021-11-03 05:46:41,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938300054] [2021-11-03 05:46:41,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:46:41,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:41,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:46:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:46:41,451 INFO L87 Difference]: Start difference. First operand 686 states and 942 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:41,866 INFO L93 Difference]: Finished difference Result 1201 states and 1653 transitions. [2021-11-03 05:46:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:46:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 05:46:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:41,868 INFO L225 Difference]: With dead ends: 1201 [2021-11-03 05:46:41,869 INFO L226 Difference]: Without dead ends: 610 [2021-11-03 05:46:41,870 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:46:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-03 05:46:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-11-03 05:46:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 603 states have (on average 1.373134328358209) internal successors, (828), 609 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 828 transitions. [2021-11-03 05:46:41,925 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 828 transitions. Word has length 55 [2021-11-03 05:46:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:41,925 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 828 transitions. [2021-11-03 05:46:41,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 828 transitions. [2021-11-03 05:46:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 05:46:41,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:41,926 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:46:41,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:42,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:42,327 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:46:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash 247820487, now seen corresponding path program 1 times [2021-11-03 05:46:42,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:42,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363170036] [2021-11-03 05:46:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:42,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:42,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:42,331 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:42,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-11-03 05:46:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:45,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:46:45,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:45,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:45,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:45,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363170036] [2021-11-03 05:46:45,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363170036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:45,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [403736268] [2021-11-03 05:46:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:45,985 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:45,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:45,985 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:45,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2021-11-03 05:46:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:48,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:46:48,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:49,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:46:50,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [403736268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:50,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:50,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 16 [2021-11-03 05:46:50,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128933247] [2021-11-03 05:46:50,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:46:50,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:50,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:46:50,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:46:50,007 INFO L87 Difference]: Start difference. First operand 610 states and 828 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:53,355 INFO L93 Difference]: Finished difference Result 1125 states and 1531 transitions. [2021-11-03 05:46:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:46:53,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 05:46:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:53,358 INFO L225 Difference]: With dead ends: 1125 [2021-11-03 05:46:53,358 INFO L226 Difference]: Without dead ends: 610 [2021-11-03 05:46:53,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:46:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-03 05:46:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-11-03 05:46:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 603 states have (on average 1.36318407960199) internal successors, (822), 609 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 822 transitions. [2021-11-03 05:46:53,447 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 822 transitions. Word has length 56 [2021-11-03 05:46:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:53,447 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 822 transitions. [2021-11-03 05:46:53,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 822 transitions. [2021-11-03 05:46:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 05:46:53,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:53,448 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:46:53,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:53,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:53,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:53,849 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:46:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash -813196766, now seen corresponding path program 1 times [2021-11-03 05:46:53,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:53,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386819548] [2021-11-03 05:46:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:53,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:53,854 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:53,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-11-03 05:46:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:56,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:46:56,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:57,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:46:57,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:57,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386819548] [2021-11-03 05:46:57,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386819548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:57,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096857120] [2021-11-03 05:46:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:57,652 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:57,655 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:57,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2021-11-03 05:47:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:00,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:47:00,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:00,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:01,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096857120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:01,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:01,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 14 [2021-11-03 05:47:01,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107237834] [2021-11-03 05:47:01,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:47:01,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:01,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:47:01,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:47:01,065 INFO L87 Difference]: Start difference. First operand 610 states and 822 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:01,993 INFO L93 Difference]: Finished difference Result 1585 states and 2153 transitions. [2021-11-03 05:47:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 05:47:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:01,995 INFO L225 Difference]: With dead ends: 1585 [2021-11-03 05:47:01,995 INFO L226 Difference]: Without dead ends: 1070 [2021-11-03 05:47:01,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:47:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-03 05:47:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 628. [2021-11-03 05:47:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 621 states have (on average 1.3526570048309179) internal successors, (840), 627 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 840 transitions. [2021-11-03 05:47:02,060 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 840 transitions. Word has length 58 [2021-11-03 05:47:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:02,061 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 840 transitions. [2021-11-03 05:47:02,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 840 transitions. [2021-11-03 05:47:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:47:02,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:02,062 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:02,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:02,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:02,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:02,467 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:47:02,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:02,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1880243690, now seen corresponding path program 1 times [2021-11-03 05:47:02,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:02,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778150094] [2021-11-03 05:47:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:02,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:02,480 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:02,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-11-03 05:47:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:05,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:47:05,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:05,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:06,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:06,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778150094] [2021-11-03 05:47:06,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778150094] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:06,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1853319749] [2021-11-03 05:47:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:06,278 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:06,279 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:06,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2021-11-03 05:47:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:09,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:47:09,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:09,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:09,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1853319749] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:09,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:09,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7, 7] total 15 [2021-11-03 05:47:09,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433885576] [2021-11-03 05:47:09,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:47:09,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:47:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:47:09,772 INFO L87 Difference]: Start difference. First operand 628 states and 840 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:10,987 INFO L93 Difference]: Finished difference Result 1341 states and 1806 transitions. [2021-11-03 05:47:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:47:10,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:47:10,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:10,989 INFO L225 Difference]: With dead ends: 1341 [2021-11-03 05:47:10,989 INFO L226 Difference]: Without dead ends: 822 [2021-11-03 05:47:10,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:47:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-03 05:47:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 628. [2021-11-03 05:47:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 621 states have (on average 1.3397745571658615) internal successors, (832), 627 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 832 transitions. [2021-11-03 05:47:11,075 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 832 transitions. Word has length 59 [2021-11-03 05:47:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:11,076 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 832 transitions. [2021-11-03 05:47:11,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 832 transitions. [2021-11-03 05:47:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 05:47:11,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:11,077 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:47:11,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:11,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:11,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:11,478 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:47:11,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash -872184881, now seen corresponding path program 1 times [2021-11-03 05:47:11,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:11,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061100279] [2021-11-03 05:47:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:11,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:11,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:11,483 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:11,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-11-03 05:47:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:14,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:47:14,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:14,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:15,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:15,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061100279] [2021-11-03 05:47:15,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061100279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:15,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [804312299] [2021-11-03 05:47:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:15,360 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:15,361 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:15,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2021-11-03 05:47:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:18,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:47:18,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:18,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:18,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [804312299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:18,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:18,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-03 05:47:18,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318461208] [2021-11-03 05:47:18,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:18,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:47:18,852 INFO L87 Difference]: Start difference. First operand 628 states and 832 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:21,436 INFO L93 Difference]: Finished difference Result 1079 states and 1441 transitions. [2021-11-03 05:47:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 65 [2021-11-03 05:47:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:21,437 INFO L225 Difference]: With dead ends: 1079 [2021-11-03 05:47:21,438 INFO L226 Difference]: Without dead ends: 562 [2021-11-03 05:47:21,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:47:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-03 05:47:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-11-03 05:47:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 557 states have (on average 1.3321364452423698) internal successors, (742), 561 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 742 transitions. [2021-11-03 05:47:21,508 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 742 transitions. Word has length 65 [2021-11-03 05:47:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:21,508 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 742 transitions. [2021-11-03 05:47:21,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 742 transitions. [2021-11-03 05:47:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:47:21,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:21,509 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:47:21,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (65)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:21,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:21,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:21,911 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:47:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash 450990976, now seen corresponding path program 1 times [2021-11-03 05:47:21,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:21,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011267156] [2021-11-03 05:47:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:21,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:21,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:21,915 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:21,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-11-03 05:47:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:24,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:47:24,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:25,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:25,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:25,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011267156] [2021-11-03 05:47:25,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011267156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:25,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145899989] [2021-11-03 05:47:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:25,863 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:25,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:25,888 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:25,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2021-11-03 05:47:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:29,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:47:29,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:29,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:31,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145899989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:31,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:31,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [7, 7] total 30 [2021-11-03 05:47:31,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583252903] [2021-11-03 05:47:31,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 05:47:31,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 05:47:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-11-03 05:47:31,166 INFO L87 Difference]: Start difference. First operand 562 states and 742 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:39,902 INFO L93 Difference]: Finished difference Result 3019 states and 4075 transitions. [2021-11-03 05:47:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 05:47:39,903 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 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 73 [2021-11-03 05:47:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:39,906 INFO L225 Difference]: With dead ends: 3019 [2021-11-03 05:47:39,906 INFO L226 Difference]: Without dead ends: 2510 [2021-11-03 05:47:39,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=485, Invalid=2377, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 05:47:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-11-03 05:47:39,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 548. [2021-11-03 05:47:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 543 states have (on average 1.3259668508287292) internal successors, (720), 547 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 720 transitions. [2021-11-03 05:47:39,978 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 720 transitions. Word has length 73 [2021-11-03 05:47:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:39,978 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 720 transitions. [2021-11-03 05:47:39,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 720 transitions. [2021-11-03 05:47:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 05:47:39,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:39,979 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:47:39,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (67)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:40,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:40,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:40,383 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:47:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1282916966, now seen corresponding path program 1 times [2021-11-03 05:47:40,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:40,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841727619] [2021-11-03 05:47:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:40,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:40,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:40,387 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:40,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-11-03 05:47:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:43,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:47:43,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:43,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:44,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:44,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:44,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841727619] [2021-11-03 05:47:44,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841727619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:44,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1463337767] [2021-11-03 05:47:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:44,533 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:44,534 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:44,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2021-11-03 05:47:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:47,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:47:47,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:48,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:48,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1463337767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:48,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:48,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 14 [2021-11-03 05:47:48,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162618711] [2021-11-03 05:47:48,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:47:48,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:47:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:47:48,460 INFO L87 Difference]: Start difference. First operand 548 states and 720 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:48,815 INFO L93 Difference]: Finished difference Result 1015 states and 1338 transitions. [2021-11-03 05:47:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:47:48,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 05:47:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:48,818 INFO L225 Difference]: With dead ends: 1015 [2021-11-03 05:47:48,818 INFO L226 Difference]: Without dead ends: 929 [2021-11-03 05:47:48,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:47:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-11-03 05:47:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 562. [2021-11-03 05:47:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 557 states have (on average 1.3177737881508078) internal successors, (734), 561 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 734 transitions. [2021-11-03 05:47:48,894 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 734 transitions. Word has length 77 [2021-11-03 05:47:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:48,894 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 734 transitions. [2021-11-03 05:47:48,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 734 transitions. [2021-11-03 05:47:48,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 05:47:48,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:48,895 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:47:48,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (69)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:49,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:49,299 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:47:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1485505190, now seen corresponding path program 1 times [2021-11-03 05:47:49,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:49,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732735489] [2021-11-03 05:47:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:49,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:49,303 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:49,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-11-03 05:47:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:52,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:47:52,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:52,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:47:53,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:53,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732735489] [2021-11-03 05:47:53,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732735489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:53,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [290786942] [2021-11-03 05:47:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:53,423 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:53,424 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:53,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (71)] Waiting until timeout for monitored process [2021-11-03 05:47:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:56,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:47:56,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:57,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:47:58,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [290786942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:58,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:58,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [7, 7] total 30 [2021-11-03 05:47:58,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259887106] [2021-11-03 05:47:58,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 05:47:58,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 05:47:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-11-03 05:47:58,966 INFO L87 Difference]: Start difference. First operand 562 states and 734 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:10,734 INFO L93 Difference]: Finished difference Result 2578 states and 3473 transitions. [2021-11-03 05:48:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 05:48:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 05:48:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:10,738 INFO L225 Difference]: With dead ends: 2578 [2021-11-03 05:48:10,738 INFO L226 Difference]: Without dead ends: 1832 [2021-11-03 05:48:10,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=895, Invalid=3935, Unknown=0, NotChecked=0, Total=4830 [2021-11-03 05:48:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-11-03 05:48:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 861. [2021-11-03 05:48:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 856 states have (on average 1.3130841121495327) internal successors, (1124), 860 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1124 transitions. [2021-11-03 05:48:10,859 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1124 transitions. Word has length 77 [2021-11-03 05:48:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:10,859 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1124 transitions. [2021-11-03 05:48:10,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1124 transitions. [2021-11-03 05:48:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 05:48:10,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:10,860 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:48:10,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:11,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (71)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:11,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:11,261 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:48:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash 364796758, now seen corresponding path program 1 times [2021-11-03 05:48:11,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:11,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942729086] [2021-11-03 05:48:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:11,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:11,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:11,266 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:11,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-11-03 05:48:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:14,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:48:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:48:14,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:48:15,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:15,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942729086] [2021-11-03 05:48:15,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942729086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:15,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [551917154] [2021-11-03 05:48:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:15,416 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:15,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:15,417 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:15,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (73)] Waiting until timeout for monitored process [2021-11-03 05:48:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:18,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:48:18,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:48:19,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:48:21,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [551917154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:21,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:21,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [7, 7] total 28 [2021-11-03 05:48:21,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891554483] [2021-11-03 05:48:21,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:48:21,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:48:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-11-03 05:48:21,125 INFO L87 Difference]: Start difference. First operand 861 states and 1124 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:30,277 INFO L93 Difference]: Finished difference Result 1737 states and 2258 transitions. [2021-11-03 05:48:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:48:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 05:48:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:30,279 INFO L225 Difference]: With dead ends: 1737 [2021-11-03 05:48:30,280 INFO L226 Difference]: Without dead ends: 1615 [2021-11-03 05:48:30,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 05:48:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-03 05:48:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 814. [2021-11-03 05:48:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 809 states have (on average 1.3164400494437578) internal successors, (1065), 813 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1065 transitions. [2021-11-03 05:48:30,405 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1065 transitions. Word has length 79 [2021-11-03 05:48:30,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:30,405 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1065 transitions. [2021-11-03 05:48:30,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1065 transitions. [2021-11-03 05:48:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 05:48:30,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:30,406 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:48:30,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:30,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (73)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:30,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:30,812 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:48:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash -471072792, now seen corresponding path program 1 times [2021-11-03 05:48:30,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:30,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151195220] [2021-11-03 05:48:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:30,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:30,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:30,817 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:30,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-11-03 05:48:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:34,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:48:34,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:48:34,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:48:35,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:35,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151195220] [2021-11-03 05:48:35,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151195220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:35,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [705225982] [2021-11-03 05:48:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:35,213 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:35,214 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:35,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2021-11-03 05:48:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:38,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:48:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:48:39,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:48:39,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [705225982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:39,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:39,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7, 7] total 15 [2021-11-03 05:48:39,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165105743] [2021-11-03 05:48:39,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:48:39,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:48:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:48:39,364 INFO L87 Difference]: Start difference. First operand 814 states and 1065 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:40,365 INFO L93 Difference]: Finished difference Result 1329 states and 1739 transitions. [2021-11-03 05:48:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:48:40,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-03 05:48:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:40,368 INFO L225 Difference]: With dead ends: 1329 [2021-11-03 05:48:40,368 INFO L226 Difference]: Without dead ends: 518 [2021-11-03 05:48:40,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:48:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-03 05:48:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 350. [2021-11-03 05:48:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.2750716332378222) internal successors, (445), 349 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 445 transitions. [2021-11-03 05:48:40,425 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 445 transitions. Word has length 80 [2021-11-03 05:48:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:40,425 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 445 transitions. [2021-11-03 05:48:40,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 445 transitions. [2021-11-03 05:48:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 05:48:40,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:40,426 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-03 05:48:40,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:40,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (75)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:40,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:40,827 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-03 05:48:40,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash 555759324, now seen corresponding path program 1 times [2021-11-03 05:48:40,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:40,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415528348] [2021-11-03 05:48:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:40,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:40,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:40,833 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:40,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-11-03 05:48:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:44,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:48:44,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:48:44,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:48:45,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:45,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415528348] [2021-11-03 05:48:45,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415528348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:45,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [207352317] [2021-11-03 05:48:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:45,225 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:45,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:45,227 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:45,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2021-11-03 05:48:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:49,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:48:49,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:48:50,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 05:48:51,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [207352317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:51,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:51,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [7, 7] total 28 [2021-11-03 05:48:51,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302955439] [2021-11-03 05:48:51,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:48:51,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:48:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-11-03 05:48:51,319 INFO L87 Difference]: Start difference. First operand 350 states and 445 transitions. Second operand has 18 states, 18 states have (on average 7.888888888888889) internal successors, (142), 18 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:58,044 INFO L93 Difference]: Finished difference Result 680 states and 868 transitions. [2021-11-03 05:48:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:48:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.888888888888889) internal successors, (142), 18 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 05:48:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:58,045 INFO L225 Difference]: With dead ends: 680 [2021-11-03 05:48:58,045 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:48:58,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 05:48:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:48:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:48:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:48:58,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2021-11-03 05:48:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:58,047 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:48:58,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.888888888888889) internal successors, (142), 18 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:48:58,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:48:58,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:48:58,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:58,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (77)] Ended with exit code 0 [2021-11-03 05:48:58,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd06d1ea-7796-42b4-aaed-5572381ef8b9/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:58,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:48:58,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:58,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:58,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:58,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:58,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:48:59,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:00,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:01,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:02,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:04,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:05,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:06,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:07,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:08,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:08,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:08,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:49:08,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms