./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i --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_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/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_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/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_cf6d80e1-a819-4716-ad74-10f3394610cc/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 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:08:06,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:08:06,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:08:06,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:08:06,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:08:06,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:08:06,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:08:06,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:08:06,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:08:06,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:08:06,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:08:06,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:08:06,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:08:06,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:08:06,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:08:06,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:08:06,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:08:07,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:08:07,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:08:07,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:08:07,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:08:07,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:08:07,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:08:07,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:08:07,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:08:07,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:08:07,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:08:07,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:08:07,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:08:07,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:08:07,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:08:07,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:08:07,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:08:07,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:08:07,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:08:07,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:08:07,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:08:07,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:08:07,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:08:07,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:08:07,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:08:07,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:08:07,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:08:07,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:08:07,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:08:07,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:08:07,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:08:07,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:08:07,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:08:07,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:08:07,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:08:07,081 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:08:07,082 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:08:07,082 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:08:07,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:08:07,083 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:08:07,083 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:08:07,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:08:07,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:08:07,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:08:07,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:08:07,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:08:07,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:08:07,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:08:07,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:08:07,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:08:07,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:08:07,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:08:07,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:08:07,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:08:07,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:08:07,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:08:07,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:08:07,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:08:07,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:08:07,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:08:07,089 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:08:07,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:08:07,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:08:07,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:08:07,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:08:07,090 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_cf6d80e1-a819-4716-ad74-10f3394610cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-11-03 05:08:07,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:08:07,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:08:07,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:08:07,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:08:07,373 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:08:07,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-03 05:08:07,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/026a18282/d367de55420f40c0a11dc1a70980394a/FLAGa4063d985 [2021-11-03 05:08:08,108 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:08:08,109 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-03 05:08:08,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/026a18282/d367de55420f40c0a11dc1a70980394a/FLAGa4063d985 [2021-11-03 05:08:08,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/026a18282/d367de55420f40c0a11dc1a70980394a [2021-11-03 05:08:08,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:08:08,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:08:08,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:08,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:08:08,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:08:08,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:08" (1/1) ... [2021-11-03 05:08:08,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a532765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:08, skipping insertion in model container [2021-11-03 05:08:08,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:08" (1/1) ... [2021-11-03 05:08:08,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:08:08,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:08:08,896 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-03 05:08:09,027 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-03 05:08:09,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:09,069 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 05:08:09,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24c4f88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:09, skipping insertion in model container [2021-11-03 05:08:09,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:09,080 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:08:09,082 INFO L168 Benchmark]: Toolchain (without parser) took 776.56 ms. Allocated memory is still 125.8 MB. Free memory was 88.2 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:08:09,084 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:08:09,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.89 ms. Allocated memory is still 125.8 MB. Free memory was 88.0 MB in the beginning and 86.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:08:09,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 769.89 ms. Allocated memory is still 125.8 MB. Free memory was 88.0 MB in the beginning and 86.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/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_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/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_cf6d80e1-a819-4716-ad74-10f3394610cc/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 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:08:11,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:08:11,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:08:11,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:08:11,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:08:11,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:08:11,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:08:11,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:08:11,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:08:11,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:08:11,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:08:11,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:08:11,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:08:11,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:08:11,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:08:11,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:08:11,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:08:11,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:08:11,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:08:11,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:08:11,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:08:11,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:08:11,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:08:11,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:08:11,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:08:11,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:08:11,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:08:11,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:08:11,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:08:11,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:08:11,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:08:11,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:08:11,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:08:11,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:08:11,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:08:11,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:08:11,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:08:11,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:08:11,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:08:11,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:08:11,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:08:11,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:08:11,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:08:11,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:08:11,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:08:11,536 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:08:11,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:08:11,536 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:08:11,539 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:08:11,539 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:08:11,540 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:08:11,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:08:11,542 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:08:11,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:08:11,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:08:11,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:08:11,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:08:11,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:08:11,544 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:08:11,544 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:08:11,544 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:08:11,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:08:11,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:08:11,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:08:11,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:08:11,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:08:11,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:08:11,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:08:11,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:08:11,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:08:11,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:08:11,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:08:11,547 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:08:11,548 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:11,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:08:11,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:08:11,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:08:11,549 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_cf6d80e1-a819-4716-ad74-10f3394610cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-11-03 05:08:11,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:08:11,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:08:11,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:08:11,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:08:11,996 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:08:11,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-03 05:08:12,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/164748e00/6649e95fb263486d87df0e517b3552ae/FLAG05e5b1d2d [2021-11-03 05:08:12,833 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:08:12,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-03 05:08:12,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/164748e00/6649e95fb263486d87df0e517b3552ae/FLAG05e5b1d2d [2021-11-03 05:08:12,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/data/164748e00/6649e95fb263486d87df0e517b3552ae [2021-11-03 05:08:12,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:08:12,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:08:12,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:12,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:08:12,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:08:12,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:12" (1/1) ... [2021-11-03 05:08:13,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afbd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:13, skipping insertion in model container [2021-11-03 05:08:13,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:12" (1/1) ... [2021-11-03 05:08:13,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:08:13,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:08:13,648 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-03 05:08:13,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-03 05:08:13,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:13,892 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:08:13,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:08:13,925 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-03 05:08:14,098 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-03 05:08:14,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:14,143 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:08:14,173 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-03 05:08:14,238 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_cf6d80e1-a819-4716-ad74-10f3394610cc/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-03 05:08:14,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:14,296 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:08:14,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14 WrapperNode [2021-11-03 05:08:14,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:14,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:08:14,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:08:14,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:08:14,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:08:14,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:08:14,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:08:14,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:08:14,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:08:14,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:08:14,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:08:14,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:08:14,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (1/1) ... [2021-11-03 05:08:14,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:08:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:08:14,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:08:14,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:08:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:08:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:08:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:08:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:08:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:08:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:08:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:08:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:08:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:08:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:08:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:08:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:08:26,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:08:26,793 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-03 05:08:26,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:08:26 BoogieIcfgContainer [2021-11-03 05:08:26,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:08:26,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:08:26,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:08:26,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:08:26,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:08:12" (1/3) ... [2021-11-03 05:08:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f049c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:08:26, skipping insertion in model container [2021-11-03 05:08:26,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:14" (2/3) ... [2021-11-03 05:08:26,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f049c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:08:26, skipping insertion in model container [2021-11-03 05:08:26,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:08:26" (3/3) ... [2021-11-03 05:08:26,804 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2021-11-03 05:08:26,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:08:26,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 05:08:26,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:08:26,864 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 05:08:26,864 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 05:08:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:08:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:08:26,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:26,892 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:08:26,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:26,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-03 05:08:26,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:26,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353223517] [2021-11-03 05:08:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:26,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:26,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:26,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:08:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:08:27,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:27,195 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 05:08:27,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:27,243 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 05:08:27,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:27,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353223517] [2021-11-03 05:08:27,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353223517] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:27,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:27,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:08:27,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310725549] [2021-11-03 05:08:27,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:08:27,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:08:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:08:27,292 INFO L87 Difference]: Start difference. First operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 05:08:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:27,347 INFO L93 Difference]: Finished difference Result 614 states and 1036 transitions. [2021-11-03 05:08:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:08:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-03 05:08:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:27,361 INFO L225 Difference]: With dead ends: 614 [2021-11-03 05:08:27,362 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 05:08:27,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 05:08:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 05:08:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-03 05:08:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 05:08:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-03 05:08:27,427 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-03 05:08:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:27,428 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-03 05:08:27,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 05:08:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-03 05:08:27,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:08:27,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:27,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:08:27,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:27,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:27,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-03 05:08:27,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:27,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733704503] [2021-11-03 05:08:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:27,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:27,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:27,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:27,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:08:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:27,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:08:27,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:28,135 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 05:08:28,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:28,326 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 05:08:28,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:28,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733704503] [2021-11-03 05:08:28,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733704503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:28,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:28,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:08:28,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078382209] [2021-11-03 05:08:28,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:08:28,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:08:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:08:28,331 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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 05:08:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:28,747 INFO L93 Difference]: Finished difference Result 589 states and 772 transitions. [2021-11-03 05:08:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:08:28,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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 42 [2021-11-03 05:08:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:28,757 INFO L225 Difference]: With dead ends: 589 [2021-11-03 05:08:28,757 INFO L226 Difference]: Without dead ends: 507 [2021-11-03 05:08:28,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:08:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-03 05:08:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 425. [2021-11-03 05:08:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.331742243436754) internal successors, (558), 424 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 05:08:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2021-11-03 05:08:28,831 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2021-11-03 05:08:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:28,832 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2021-11-03 05:08:28,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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 05:08:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2021-11-03 05:08:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:08:28,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:28,855 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:28,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:29,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:29,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:29,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:29,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1555923977, now seen corresponding path program 1 times [2021-11-03 05:08:29,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:29,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619777113] [2021-11-03 05:08:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:29,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:29,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:29,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:08:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:29,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:08:29,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 05:08:30,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 05:08:31,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:31,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619777113] [2021-11-03 05:08:31,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619777113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:31,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:31,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:08:31,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230891342] [2021-11-03 05:08:31,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:08:31,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:08:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:08:31,475 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 05:08:31,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:31,607 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2021-11-03 05:08:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:08:31,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 238 [2021-11-03 05:08:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:31,611 INFO L225 Difference]: With dead ends: 850 [2021-11-03 05:08:31,611 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 05:08:31,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:08:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 05:08:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 431. [2021-11-03 05:08:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2894117647058823) internal successors, (548), 430 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 05:08:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 548 transitions. [2021-11-03 05:08:31,634 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 548 transitions. Word has length 238 [2021-11-03 05:08:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:31,635 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 548 transitions. [2021-11-03 05:08:31,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 05:08:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 548 transitions. [2021-11-03 05:08:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:08:31,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:31,640 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:31,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:31,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:31,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:31,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash 370544607, now seen corresponding path program 1 times [2021-11-03 05:08:31,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:31,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056950663] [2021-11-03 05:08:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:31,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:31,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:31,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:08:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:08:32,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 05:08:33,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 05:08:34,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:34,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056950663] [2021-11-03 05:08:34,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056950663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:34,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:34,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 05:08:34,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652105123] [2021-11-03 05:08:34,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:08:34,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:08:34,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:08:34,878 INFO L87 Difference]: Start difference. First operand 431 states and 548 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 05:08:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:34,989 INFO L93 Difference]: Finished difference Result 819 states and 1049 transitions. [2021-11-03 05:08:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:08:34,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 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 238 [2021-11-03 05:08:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:34,994 INFO L225 Difference]: With dead ends: 819 [2021-11-03 05:08:34,994 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 05:08:34,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:08:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 05:08:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-03 05:08:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.278450363196126) internal successors, (528), 418 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 05:08:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2021-11-03 05:08:35,016 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 238 [2021-11-03 05:08:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:35,016 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2021-11-03 05:08:35,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 05:08:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2021-11-03 05:08:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:08:35,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:35,027 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:35,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:35,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:35,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:35,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash -919406365, now seen corresponding path program 1 times [2021-11-03 05:08:35,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:35,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360960752] [2021-11-03 05:08:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:35,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:35,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:35,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:35,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:08:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:36,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:08:36,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 05:08:37,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 05:08:37,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:37,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360960752] [2021-11-03 05:08:37,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360960752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:37,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:37,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:08:37,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054816450] [2021-11-03 05:08:37,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:08:37,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:08:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:08:37,981 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 05:08:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:38,345 INFO L93 Difference]: Finished difference Result 789 states and 1004 transitions. [2021-11-03 05:08:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:08:38,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 238 [2021-11-03 05:08:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:38,357 INFO L225 Difference]: With dead ends: 789 [2021-11-03 05:08:38,357 INFO L226 Difference]: Without dead ends: 417 [2021-11-03 05:08:38,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:08:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-03 05:08:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-03 05:08:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 411 states have (on average 1.2773722627737227) internal successors, (525), 416 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 05:08:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 525 transitions. [2021-11-03 05:08:38,387 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 525 transitions. Word has length 238 [2021-11-03 05:08:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:38,388 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 525 transitions. [2021-11-03 05:08:38,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 05:08:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 525 transitions. [2021-11-03 05:08:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-03 05:08:38,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:38,393 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:38,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:38,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:38,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706643, now seen corresponding path program 1 times [2021-11-03 05:08:38,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:38,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073224098] [2021-11-03 05:08:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:38,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:38,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:38,608 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:38,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:08:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:08:39,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 05:08:40,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 05:08:40,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:40,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073224098] [2021-11-03 05:08:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073224098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:40,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:08:40,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635248994] [2021-11-03 05:08:40,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:08:40,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:08:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:08:40,958 INFO L87 Difference]: Start difference. First operand 417 states and 525 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 05:08:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:41,090 INFO L93 Difference]: Finished difference Result 805 states and 1032 transitions. [2021-11-03 05:08:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:08:41,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 245 [2021-11-03 05:08:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:41,094 INFO L225 Difference]: With dead ends: 805 [2021-11-03 05:08:41,094 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 05:08:41,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:08:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 05:08:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-03 05:08:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 423 states have (on average 1.2695035460992907) internal successors, (537), 428 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 05:08:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 537 transitions. [2021-11-03 05:08:41,113 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 537 transitions. Word has length 245 [2021-11-03 05:08:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:41,114 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 537 transitions. [2021-11-03 05:08:41,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 05:08:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 537 transitions. [2021-11-03 05:08:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 05:08:41,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:41,119 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:41,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:41,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:41,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash 660379208, now seen corresponding path program 1 times [2021-11-03 05:08:41,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:41,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139847480] [2021-11-03 05:08:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:41,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:41,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:08:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:42,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:08:42,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:08:43,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:08:43,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:43,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139847480] [2021-11-03 05:08:43,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139847480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:08:43,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1396115344] [2021-11-03 05:08:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:43,950 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:43,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:08:43,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:08:43,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:08:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:45,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:08:45,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:08:45,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:08:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1396115344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:46,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:08:46,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-03 05:08:46,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206659770] [2021-11-03 05:08:46,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:08:46,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:08:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:08:46,607 INFO L87 Difference]: Start difference. First operand 429 states and 537 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 05:08:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:46,861 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2021-11-03 05:08:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:08:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 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 248 [2021-11-03 05:08:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:46,868 INFO L225 Difference]: With dead ends: 803 [2021-11-03 05:08:46,871 INFO L226 Difference]: Without dead ends: 471 [2021-11-03 05:08:46,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:08:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-03 05:08:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2021-11-03 05:08:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 463 states have (on average 1.2462203023758098) internal successors, (577), 468 states have internal predecessors, (577), 0 states have call successors, (0), 0 states 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 05:08:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2021-11-03 05:08:46,893 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 248 [2021-11-03 05:08:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:46,894 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2021-11-03 05:08:46,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 05:08:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2021-11-03 05:08:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 05:08:46,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:46,900 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:46,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:47,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:47,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:47,316 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:47,317 INFO L85 PathProgramCache]: Analyzing trace with hash -372700096, now seen corresponding path program 1 times [2021-11-03 05:08:47,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:47,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656950223] [2021-11-03 05:08:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:47,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:47,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:47,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:47,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:08:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:48,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:08:48,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:08:49,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:08:50,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:50,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656950223] [2021-11-03 05:08:50,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656950223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:08:50,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [118776767] [2021-11-03 05:08:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:50,083 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:50,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:08:50,084 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:08:50,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:08:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:51,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:08:51,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 05:08:52,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 05:08:53,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [118776767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:53,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:08:53,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:08:53,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589382537] [2021-11-03 05:08:53,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:08:53,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:08:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:08:53,631 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 05:08:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:54,554 INFO L93 Difference]: Finished difference Result 1027 states and 1273 transitions. [2021-11-03 05:08:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:08:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 248 [2021-11-03 05:08:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:54,561 INFO L225 Difference]: With dead ends: 1027 [2021-11-03 05:08:54,561 INFO L226 Difference]: Without dead ends: 752 [2021-11-03 05:08:54,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:08:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-03 05:08:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 740. [2021-11-03 05:08:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.2574931880108993) internal successors, (923), 739 states have internal predecessors, (923), 0 states have call successors, (0), 0 states 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 05:08:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 923 transitions. [2021-11-03 05:08:54,597 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 923 transitions. Word has length 248 [2021-11-03 05:08:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:54,597 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 923 transitions. [2021-11-03 05:08:54,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 05:08:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 923 transitions. [2021-11-03 05:08:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 05:08:54,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:54,603 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:54,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 05:08:54,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:55,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:55,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:08:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash -292299512, now seen corresponding path program 1 times [2021-11-03 05:08:55,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:55,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371074204] [2021-11-03 05:08:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:55,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:55,031 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:08:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:56,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:08:56,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:08:57,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:08:58,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:58,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371074204] [2021-11-03 05:08:58,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371074204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:08:58,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [723670037] [2021-11-03 05:08:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:58,165 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:08:58,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:08:58,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:09:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:00,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:09:00,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 05:09:02,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 05:09:04,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [723670037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:04,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:09:04,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:09:04,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190221772] [2021-11-03 05:09:04,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:09:04,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:09:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:09:04,448 INFO L87 Difference]: Start difference. First operand 740 states and 923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 05:09:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:04,733 INFO L93 Difference]: Finished difference Result 1052 states and 1305 transitions. [2021-11-03 05:09:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:09:04,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 255 [2021-11-03 05:09:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:04,738 INFO L225 Difference]: With dead ends: 1052 [2021-11-03 05:09:04,739 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 05:09:04,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:09:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 05:09:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-03 05:09:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 731 states have (on average 1.2571819425444597) internal successors, (919), 736 states have internal predecessors, (919), 0 states have call successors, (0), 0 states 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 05:09:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 919 transitions. [2021-11-03 05:09:04,769 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 919 transitions. Word has length 255 [2021-11-03 05:09:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:04,769 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 919 transitions. [2021-11-03 05:09:04,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 05:09:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 919 transitions. [2021-11-03 05:09:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:09:04,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:04,775 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:04,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:05,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-03 05:09:05,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:05,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:09:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash 24612397, now seen corresponding path program 1 times [2021-11-03 05:09:05,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:05,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54814568] [2021-11-03 05:09:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:05,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:05,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:05,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:09:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:07,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:09:07,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:07,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:08,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:08,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54814568] [2021-11-03 05:09:08,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54814568] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:08,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [141264584] [2021-11-03 05:09:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:08,585 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:08,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:08,586 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:08,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:09:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:10,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:09:10,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:09:11,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:09:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [141264584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:11,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:09:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:09:11,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415738035] [2021-11-03 05:09:11,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:09:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:09:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:09:11,956 INFO L87 Difference]: Start difference. First operand 737 states and 919 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 05:09:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:12,109 INFO L93 Difference]: Finished difference Result 959 states and 1227 transitions. [2021-11-03 05:09:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:09:12,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 265 [2021-11-03 05:09:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:12,115 INFO L225 Difference]: With dead ends: 959 [2021-11-03 05:09:12,115 INFO L226 Difference]: Without dead ends: 800 [2021-11-03 05:09:12,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:09:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-03 05:09:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2021-11-03 05:09:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 791 states have (on average 1.2376738305941846) internal successors, (979), 796 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 05:09:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 979 transitions. [2021-11-03 05:09:12,145 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 979 transitions. Word has length 265 [2021-11-03 05:09:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:12,146 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 979 transitions. [2021-11-03 05:09:12,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 05:09:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 979 transitions. [2021-11-03 05:09:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:09:12,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:12,149 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:12,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:12,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-03 05:09:12,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:12,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:09:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1170519209, now seen corresponding path program 1 times [2021-11-03 05:09:12,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:12,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362266084] [2021-11-03 05:09:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:12,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:12,575 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:12,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:09:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:14,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:09:14,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:15,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:16,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:16,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362266084] [2021-11-03 05:09:16,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362266084] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:16,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1435740875] [2021-11-03 05:09:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:16,356 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:16,360 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:16,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:09:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:09:19,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 05:09:19,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 05:09:20,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1435740875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:20,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:09:20,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:09:20,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697761167] [2021-11-03 05:09:20,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:09:20,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:09:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:09:20,362 INFO L87 Difference]: Start difference. First operand 797 states and 979 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 05:09:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:20,524 INFO L93 Difference]: Finished difference Result 1457 states and 1807 transitions. [2021-11-03 05:09:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:09:20,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 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 265 [2021-11-03 05:09:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:20,535 INFO L225 Difference]: With dead ends: 1457 [2021-11-03 05:09:20,535 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 05:09:20,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:09:20,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 05:09:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2021-11-03 05:09:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 740 states have (on average 1.2094594594594594) internal successors, (895), 745 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 05:09:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2021-11-03 05:09:20,566 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 265 [2021-11-03 05:09:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2021-11-03 05:09:20,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 05:09:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2021-11-03 05:09:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:09:20,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:20,570 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:20,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:20,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-03 05:09:20,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:20,988 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:09:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1760654349, now seen corresponding path program 1 times [2021-11-03 05:09:20,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:20,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436162272] [2021-11-03 05:09:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:20,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:20,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:20,992 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:20,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:09:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:23,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:09:23,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:23,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:24,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:24,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436162272] [2021-11-03 05:09:24,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436162272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:24,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2002652340] [2021-11-03 05:09:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:24,709 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:24,710 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:24,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:09:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:27,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:09:27,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:09:28,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:09:28,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2002652340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:28,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:09:28,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:09:28,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9553852] [2021-11-03 05:09:28,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:09:28,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:28,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:09:28,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:09:28,631 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 05:09:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:28,769 INFO L93 Difference]: Finished difference Result 929 states and 1137 transitions. [2021-11-03 05:09:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:09:28,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 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 265 [2021-11-03 05:09:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:28,775 INFO L225 Difference]: With dead ends: 929 [2021-11-03 05:09:28,776 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 05:09:28,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:09:28,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 05:09:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 695. [2021-11-03 05:09:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 689 states have (on average 1.1770682148040639) internal successors, (811), 694 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 05:09:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 811 transitions. [2021-11-03 05:09:28,840 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 811 transitions. Word has length 265 [2021-11-03 05:09:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:28,841 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 811 transitions. [2021-11-03 05:09:28,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 05:09:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 811 transitions. [2021-11-03 05:09:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:09:28,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:28,846 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:28,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:29,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:29,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:29,273 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:09:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash -625509349, now seen corresponding path program 1 times [2021-11-03 05:09:29,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:29,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478775387] [2021-11-03 05:09:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:29,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:29,283 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:29,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:09:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:31,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:09:31,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:32,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:33,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:33,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478775387] [2021-11-03 05:09:33,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478775387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:33,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [768197992] [2021-11-03 05:09:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:33,202 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:33,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:33,204 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:33,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:09:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:36,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:09:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:37,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:09:38,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [768197992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:38,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035714980] [2021-11-03 05:09:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:38,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:09:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:09:38,201 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:09:38,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 05:09:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:41,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:09:41,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 05:09:41,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 05:09:42,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035714980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:42,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:09:42,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 05:09:42,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895093455] [2021-11-03 05:09:42,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:09:42,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:09:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:09:42,556 INFO L87 Difference]: Start difference. First operand 695 states and 811 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 05:09:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:43,173 INFO L93 Difference]: Finished difference Result 1387 states and 1658 transitions. [2021-11-03 05:09:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:09:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 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 265 [2021-11-03 05:09:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:43,180 INFO L225 Difference]: With dead ends: 1387 [2021-11-03 05:09:43,180 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 05:09:43,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:09:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 05:09:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-03 05:09:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 729 states have (on average 1.1673525377229081) internal successors, (851), 734 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 05:09:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 851 transitions. [2021-11-03 05:09:43,218 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 851 transitions. Word has length 265 [2021-11-03 05:09:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:43,218 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 851 transitions. [2021-11-03 05:09:43,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 05:09:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 851 transitions. [2021-11-03 05:09:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-03 05:09:43,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:43,221 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:43,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:43,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-03 05:09:43,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:43,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:09:43,839 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:09:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1379426587, now seen corresponding path program 2 times [2021-11-03 05:09:43,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:43,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417688467] [2021-11-03 05:09:43,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:09:43,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:43,843 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:43,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 05:09:46,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:09:46,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:09:47,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:09:47,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:09:47,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:09:48,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:48,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417688467] [2021-11-03 05:09:48,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417688467] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:48,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1364354146] [2021-11-03 05:09:48,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:09:48,957 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:48,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:48,958 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:48,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 05:09:54,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:09:54,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:09:54,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:09:54,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:09:54,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:09:55,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1364354146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:55,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315213687] [2021-11-03 05:09:55,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:09:55,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:09:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:09:55,576 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:09:55,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 05:09:59,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:09:59,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:09:59,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:09:59,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:10:00,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:10:01,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315213687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:10:01,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:10:01,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-03 05:10:01,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296415041] [2021-11-03 05:10:01,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 05:10:01,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:10:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 05:10:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:10:01,498 INFO L87 Difference]: Start difference. First operand 735 states and 851 transitions. Second operand has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 05:10:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:26,453 INFO L93 Difference]: Finished difference Result 3281 states and 3971 transitions. [2021-11-03 05:10:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 05:10:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 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 281 [2021-11-03 05:10:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:26,469 INFO L225 Difference]: With dead ends: 3281 [2021-11-03 05:10:26,470 INFO L226 Difference]: Without dead ends: 2593 [2021-11-03 05:10:26,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2593, Invalid=8963, Unknown=0, NotChecked=0, Total=11556 [2021-11-03 05:10:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-03 05:10:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2211. [2021-11-03 05:10:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2205 states have (on average 1.1551020408163266) internal successors, (2547), 2210 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states 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 05:10:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2547 transitions. [2021-11-03 05:10:26,598 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2547 transitions. Word has length 281 [2021-11-03 05:10:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:26,599 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2547 transitions. [2021-11-03 05:10:26,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 05:10:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2547 transitions. [2021-11-03 05:10:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2021-11-03 05:10:26,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:26,616 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:26,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:10:26,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:10:27,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-03 05:10:27,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:10:27,220 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:10:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash -308654593, now seen corresponding path program 3 times [2021-11-03 05:10:27,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:10:27,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555115042] [2021-11-03 05:10:27,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:10:27,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:10:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:10:27,224 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:10:27,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6d80e1-a819-4716-ad74-10f3394610cc/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process