./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:30,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:30,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:30,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:30,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:30,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:30,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:30,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:30,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:30,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:30,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:30,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:30,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:30,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:30,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:30,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:30,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:30,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:30,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:30,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:30,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:30,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:30,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:30,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:30,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:30,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:30,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:30,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:30,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:30,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:30,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:30,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:30,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:30,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:30,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:30,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:30,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:30,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:30,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:30,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:30,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:30,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:22:31,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:31,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:31,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:31,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:31,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:31,021 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:31,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:22:31,022 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:31,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:31,022 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:22:31,023 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:22:31,023 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:31,024 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:22:31,024 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:22:31,024 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:22:31,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:31,025 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:22:31,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:22:31,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:22:31,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:31,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:31,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:31,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:31,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:31,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:22:31,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:31,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:31,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:31,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:31,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:31,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:31,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:31,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:31,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:31,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:22:31,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:22:31,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:31,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:31,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:31,032 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c [2021-11-03 04:22:31,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:31,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:31,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:31,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:31,314 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:31,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2021-11-03 04:22:31,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/cee2daf1b/6e9a67b5fde7459fb53b615aaf148ce6/FLAG1d10debba [2021-11-03 04:22:32,108 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:32,109 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2021-11-03 04:22:32,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/cee2daf1b/6e9a67b5fde7459fb53b615aaf148ce6/FLAG1d10debba [2021-11-03 04:22:32,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/cee2daf1b/6e9a67b5fde7459fb53b615aaf148ce6 [2021-11-03 04:22:32,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:32,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:32,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:32,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:32,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:32,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:32" (1/1) ... [2021-11-03 04:22:32,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c74dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:32, skipping insertion in model container [2021-11-03 04:22:32,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:32" (1/1) ... [2021-11-03 04:22:32,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:32,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:32,825 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c[40079,40092] [2021-11-03 04:22:32,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:32,931 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 04:22:32,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fab6c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:32, skipping insertion in model container [2021-11-03 04:22:32,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:32,932 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:22:32,934 INFO L168 Benchmark]: Toolchain (without parser) took 629.75 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 62.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:32,935 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 102.8 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:22:32,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.39 ms. Allocated memory is still 102.8 MB. Free memory was 66.1 MB in the beginning and 62.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:32,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 102.8 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 624.39 ms. Allocated memory is still 102.8 MB. Free memory was 66.1 MB in the beginning and 62.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 933]: 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:35,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:35,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:35,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:35,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:35,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:35,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:35,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:35,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:35,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:35,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:35,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:35,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:35,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:35,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:35,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:35,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:35,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:35,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:35,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:35,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:35,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:35,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:35,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:35,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:35,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:35,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:35,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:35,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:35,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:35,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:35,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:35,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:35,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:35,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:35,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:35,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:35,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:35,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:35,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:35,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:35,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:22:35,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:35,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:35,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:35,383 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:35,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:35,383 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:35,383 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:35,384 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:35,385 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:35,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:35,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:22:35,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:22:35,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:35,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:35,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:35,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:35,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:35,388 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:22:35,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:22:35,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:22:35,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:35,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:35,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:35,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:35,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:22:35,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:35,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:35,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:35,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:35,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:35,391 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:22:35,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:35,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:35,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:35,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:35,393 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c [2021-11-03 04:22:35,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:35,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:35,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:35,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:35,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:35,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2021-11-03 04:22:35,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/297d82ade/af7d18769de54b0d8e64674f892843af/FLAG23e37c4d3 [2021-11-03 04:22:36,539 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:36,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2021-11-03 04:22:36,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/297d82ade/af7d18769de54b0d8e64674f892843af/FLAG23e37c4d3 [2021-11-03 04:22:36,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/data/297d82ade/af7d18769de54b0d8e64674f892843af [2021-11-03 04:22:36,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:36,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:36,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:36,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:36,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:36,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:36" (1/1) ... [2021-11-03 04:22:36,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5f206c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:36, skipping insertion in model container [2021-11-03 04:22:36,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:36" (1/1) ... [2021-11-03 04:22:36,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:36,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:37,283 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c[40079,40092] [2021-11-03 04:22:37,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:37,458 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:22:37,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:37,575 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c[40079,40092] [2021-11-03 04:22:37,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:37,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:22:37,723 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_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c[40079,40092] [2021-11-03 04:22:37,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:37,792 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:22:37,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37 WrapperNode [2021-11-03 04:22:37,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:37,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:22:37,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:22:37,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:22:37,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:37,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:22:38,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:22:38,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:22:38,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:22:38,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:38,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:39,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:22:39,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:22:39,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:22:39,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:22:39,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (1/1) ... [2021-11-03 04:22:39,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:39,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:22:39,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:22:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:22:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:22:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:22:39,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:22:56,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:22:56,691 INFO L299 CfgBuilder]: Removed 1709 assume(true) statements. [2021-11-03 04:22:56,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:22:56 BoogieIcfgContainer [2021-11-03 04:22:56,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:22:56,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:22:56,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:22:56,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:22:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:22:36" (1/3) ... [2021-11-03 04:22:56,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e84c565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:22:56, skipping insertion in model container [2021-11-03 04:22:56,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:37" (2/3) ... [2021-11-03 04:22:56,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e84c565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:22:56, skipping insertion in model container [2021-11-03 04:22:56,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:22:56" (3/3) ... [2021-11-03 04:22:56,709 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2021-11-03 04:22:56,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:22:56,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:22:56,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:22:56,806 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 04:22:56,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:22:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 7188 states, 7182 states have (on average 1.8876357560568087) internal successors, (13557), 7187 states have internal predecessors, (13557), 0 states have call successors, (0), 0 states 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 04:22:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:22:56,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:56,971 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] [2021-11-03 04:22:56,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:22:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1414304943, now seen corresponding path program 1 times [2021-11-03 04:22:56,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:56,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969162131] [2021-11-03 04:22:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:56,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:56,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:56,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:22:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:57,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:22:57,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:57,479 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 04:22:57,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:57,570 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 04:22:57,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:57,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969162131] [2021-11-03 04:22:57,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969162131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:57,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:57,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:22:57,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791410282] [2021-11-03 04:22:57,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:22:57,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:22:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:22:57,640 INFO L87 Difference]: Start difference. First operand has 7188 states, 7182 states have (on average 1.8876357560568087) internal successors, (13557), 7187 states have internal predecessors, (13557), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:57,822 INFO L93 Difference]: Finished difference Result 7207 states and 13580 transitions. [2021-11-03 04:22:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:22:57,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 04:22:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:57,891 INFO L225 Difference]: With dead ends: 7207 [2021-11-03 04:22:57,891 INFO L226 Difference]: Without dead ends: 7184 [2021-11-03 04:22:57,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 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 04:22:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-11-03 04:22:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7184. [2021-11-03 04:22:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7179 states have (on average 1.8867530296698705) internal successors, (13545), 7183 states have internal predecessors, (13545), 0 states have call successors, (0), 0 states 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 04:22:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 13545 transitions. [2021-11-03 04:22:58,209 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 13545 transitions. Word has length 27 [2021-11-03 04:22:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:58,210 INFO L470 AbstractCegarLoop]: Abstraction has 7184 states and 13545 transitions. [2021-11-03 04:22:58,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 13545 transitions. [2021-11-03 04:22:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:22:58,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:58,215 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] [2021-11-03 04:22:58,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:58,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:58,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:22:58,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:58,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1556821425, now seen corresponding path program 1 times [2021-11-03 04:22:58,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:58,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271156651] [2021-11-03 04:22:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:58,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:58,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:58,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:22:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:58,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:22:58,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:58,856 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 04:22:58,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:58,954 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 04:22:58,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:58,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271156651] [2021-11-03 04:22:58,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271156651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:58,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:58,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:22:58,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875998091] [2021-11-03 04:22:58,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:22:58,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:22:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:58,959 INFO L87 Difference]: Start difference. First operand 7184 states and 13545 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 04:22:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:59,563 INFO L93 Difference]: Finished difference Result 14355 states and 27071 transitions. [2021-11-03 04:22:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:22:59,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 29 [2021-11-03 04:22:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:59,618 INFO L225 Difference]: With dead ends: 14355 [2021-11-03 04:22:59,618 INFO L226 Difference]: Without dead ends: 7184 [2021-11-03 04:22:59,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 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 04:22:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-11-03 04:22:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7184. [2021-11-03 04:22:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7179 states have (on average 1.8859172586711241) internal successors, (13539), 7183 states have internal predecessors, (13539), 0 states have call successors, (0), 0 states 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 04:23:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 13539 transitions. [2021-11-03 04:23:00,021 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 13539 transitions. Word has length 29 [2021-11-03 04:23:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:00,022 INFO L470 AbstractCegarLoop]: Abstraction has 7184 states and 13539 transitions. [2021-11-03 04:23:00,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 04:23:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 13539 transitions. [2021-11-03 04:23:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:23:00,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:00,037 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] [2021-11-03 04:23:00,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:00,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:00,251 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1675267835, now seen corresponding path program 1 times [2021-11-03 04:23:00,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:00,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861929772] [2021-11-03 04:23:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:00,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:00,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:00,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:23:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:00,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:23:00,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:00,748 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 04:23:00,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:00,863 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 04:23:00,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:00,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861929772] [2021-11-03 04:23:00,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861929772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:00,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:00,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:23:00,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557611093] [2021-11-03 04:23:00,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:00,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:00,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:00,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:00,867 INFO L87 Difference]: Start difference. First operand 7184 states and 13539 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 04:23:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:01,459 INFO L93 Difference]: Finished difference Result 14319 states and 26994 transitions. [2021-11-03 04:23:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:01,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:23:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:01,505 INFO L225 Difference]: With dead ends: 14319 [2021-11-03 04:23:01,505 INFO L226 Difference]: Without dead ends: 7157 [2021-11-03 04:23:01,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:23:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-03 04:23:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2021-11-03 04:23:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 7152 states have (on average 1.8852069351230425) internal successors, (13483), 7156 states have internal predecessors, (13483), 0 states have call successors, (0), 0 states 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 04:23:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13483 transitions. [2021-11-03 04:23:01,914 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13483 transitions. Word has length 34 [2021-11-03 04:23:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 13483 transitions. [2021-11-03 04:23:01,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 04:23:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13483 transitions. [2021-11-03 04:23:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 04:23:01,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:01,917 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] [2021-11-03 04:23:01,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:02,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:02,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash -634445021, now seen corresponding path program 1 times [2021-11-03 04:23:02,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:02,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802765476] [2021-11-03 04:23:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:02,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:02,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:02,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:02,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:23:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:02,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:02,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:02,632 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 04:23:02,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:02,741 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 04:23:02,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:02,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802765476] [2021-11-03 04:23:02,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802765476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:02,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:02,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:23:02,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151258989] [2021-11-03 04:23:02,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:02,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:02,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:02,744 INFO L87 Difference]: Start difference. First operand 7157 states and 13483 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:03,247 INFO L93 Difference]: Finished difference Result 14292 states and 26938 transitions. [2021-11-03 04:23:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:23:03,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-03 04:23:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:03,271 INFO L225 Difference]: With dead ends: 14292 [2021-11-03 04:23:03,271 INFO L226 Difference]: Without dead ends: 7157 [2021-11-03 04:23:03,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 04:23:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-03 04:23:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2021-11-03 04:23:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 7152 states have (on average 1.884368008948546) internal successors, (13477), 7156 states have internal predecessors, (13477), 0 states have call successors, (0), 0 states 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 04:23:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13477 transitions. [2021-11-03 04:23:03,594 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13477 transitions. Word has length 35 [2021-11-03 04:23:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:03,595 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 13477 transitions. [2021-11-03 04:23:03,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13477 transitions. [2021-11-03 04:23:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:23:03,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:03,599 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] [2021-11-03 04:23:03,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:03,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:03,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -819630094, now seen corresponding path program 1 times [2021-11-03 04:23:03,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:03,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738093372] [2021-11-03 04:23:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:03,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:03,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:03,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:03,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:23:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:04,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:23:04,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:04,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:04,437 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 04:23:04,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:04,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738093372] [2021-11-03 04:23:04,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738093372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:04,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:04,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:04,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366857088] [2021-11-03 04:23:04,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:04,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:04,440 INFO L87 Difference]: Start difference. First operand 7157 states and 13477 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:05,003 INFO L93 Difference]: Finished difference Result 14286 states and 26921 transitions. [2021-11-03 04:23:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:05,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-03 04:23:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:05,024 INFO L225 Difference]: With dead ends: 14286 [2021-11-03 04:23:05,024 INFO L226 Difference]: Without dead ends: 7154 [2021-11-03 04:23:05,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:23:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2021-11-03 04:23:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 7154. [2021-11-03 04:23:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7154 states, 7149 states have (on average 1.8840397258357813) internal successors, (13469), 7153 states have internal predecessors, (13469), 0 states have call successors, (0), 0 states 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 04:23:05,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 13469 transitions. [2021-11-03 04:23:05,374 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 13469 transitions. Word has length 40 [2021-11-03 04:23:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:05,375 INFO L470 AbstractCegarLoop]: Abstraction has 7154 states and 13469 transitions. [2021-11-03 04:23:05,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 13469 transitions. [2021-11-03 04:23:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:23:05,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:05,377 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] [2021-11-03 04:23:05,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:05,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:05,591 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1861414946, now seen corresponding path program 1 times [2021-11-03 04:23:05,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:05,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474735047] [2021-11-03 04:23:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:05,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:05,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:05,594 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:05,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:23:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:05,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:05,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:06,241 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 04:23:06,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:06,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:06,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474735047] [2021-11-03 04:23:06,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474735047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:06,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:06,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:23:06,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358462638] [2021-11-03 04:23:06,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:06,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:06,416 INFO L87 Difference]: Start difference. First operand 7154 states and 13469 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:07,993 INFO L93 Difference]: Finished difference Result 18488 states and 34876 transitions. [2021-11-03 04:23:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 04:23:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:08,041 INFO L225 Difference]: With dead ends: 18488 [2021-11-03 04:23:08,041 INFO L226 Difference]: Without dead ends: 14869 [2021-11-03 04:23:08,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 04:23:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2021-11-03 04:23:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 9296. [2021-11-03 04:23:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9296 states, 9291 states have (on average 1.8852653105155528) internal successors, (17516), 9295 states have internal predecessors, (17516), 0 states have call successors, (0), 0 states 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 04:23:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 17516 transitions. [2021-11-03 04:23:08,606 INFO L78 Accepts]: Start accepts. Automaton has 9296 states and 17516 transitions. Word has length 41 [2021-11-03 04:23:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:08,607 INFO L470 AbstractCegarLoop]: Abstraction has 9296 states and 17516 transitions. [2021-11-03 04:23:08,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 9296 states and 17516 transitions. [2021-11-03 04:23:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:23:08,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:08,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:08,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:08,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:08,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:08,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1944405844, now seen corresponding path program 1 times [2021-11-03 04:23:08,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:08,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167717980] [2021-11-03 04:23:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:08,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:08,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:08,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:08,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:23:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:09,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:09,446 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 04:23:09,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:09,644 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 04:23:09,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:09,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167717980] [2021-11-03 04:23:09,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167717980] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:09,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:09,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:23:09,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959797406] [2021-11-03 04:23:09,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:09,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:09,647 INFO L87 Difference]: Start difference. First operand 9296 states and 17516 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 04:23:10,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:10,767 INFO L93 Difference]: Finished difference Result 17398 states and 32574 transitions. [2021-11-03 04:23:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:23:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:23:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:10,796 INFO L225 Difference]: With dead ends: 17398 [2021-11-03 04:23:10,797 INFO L226 Difference]: Without dead ends: 9365 [2021-11-03 04:23:10,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:23:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9365 states. [2021-11-03 04:23:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9365 to 6531. [2021-11-03 04:23:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 6526 states have (on average 1.8786392889978547) internal successors, (12260), 6530 states have internal predecessors, (12260), 0 states have call successors, (0), 0 states 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 04:23:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 12260 transitions. [2021-11-03 04:23:11,234 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 12260 transitions. Word has length 60 [2021-11-03 04:23:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:11,235 INFO L470 AbstractCegarLoop]: Abstraction has 6531 states and 12260 transitions. [2021-11-03 04:23:11,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 04:23:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 12260 transitions. [2021-11-03 04:23:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:23:11,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:11,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:11,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:11,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:11,456 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:11,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash 806098474, now seen corresponding path program 1 times [2021-11-03 04:23:11,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:11,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328218052] [2021-11-03 04:23:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:11,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:11,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:11,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:11,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:23:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:11,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:23:11,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:12,172 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 04:23:12,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:12,400 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 04:23:12,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:12,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328218052] [2021-11-03 04:23:12,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328218052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:12,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:12,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:23:12,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908609821] [2021-11-03 04:23:12,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:12,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:12,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:12,404 INFO L87 Difference]: Start difference. First operand 6531 states and 12260 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:16,658 INFO L93 Difference]: Finished difference Result 22897 states and 43008 transitions. [2021-11-03 04:23:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 04:23:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:16,704 INFO L225 Difference]: With dead ends: 22897 [2021-11-03 04:23:16,704 INFO L226 Difference]: Without dead ends: 16400 [2021-11-03 04:23:16,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16400 states. [2021-11-03 04:23:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16400 to 6531. [2021-11-03 04:23:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 6526 states have (on average 1.8231688630095004) internal successors, (11898), 6530 states have internal predecessors, (11898), 0 states have call successors, (0), 0 states 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 04:23:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 11898 transitions. [2021-11-03 04:23:17,262 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 11898 transitions. Word has length 61 [2021-11-03 04:23:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:17,265 INFO L470 AbstractCegarLoop]: Abstraction has 6531 states and 11898 transitions. [2021-11-03 04:23:17,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 11898 transitions. [2021-11-03 04:23:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:23:17,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:17,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:17,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:17,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:17,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash -488243434, now seen corresponding path program 1 times [2021-11-03 04:23:17,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:17,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608768189] [2021-11-03 04:23:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:17,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:17,489 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:17,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:23:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:17,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:23:17,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:18,134 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 04:23:18,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:18,326 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 04:23:18,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:18,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608768189] [2021-11-03 04:23:18,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608768189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:18,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:18,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:23:18,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625011768] [2021-11-03 04:23:18,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:18,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:18,329 INFO L87 Difference]: Start difference. First operand 6531 states and 11898 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:21,157 INFO L93 Difference]: Finished difference Result 17909 states and 32912 transitions. [2021-11-03 04:23:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:23:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 04:23:21,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:21,183 INFO L225 Difference]: With dead ends: 17909 [2021-11-03 04:23:21,184 INFO L226 Difference]: Without dead ends: 11439 [2021-11-03 04:23:21,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:23:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11439 states. [2021-11-03 04:23:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11439 to 6427. [2021-11-03 04:23:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6427 states, 6422 states have (on average 1.8240423544067268) internal successors, (11714), 6426 states have internal predecessors, (11714), 0 states have call successors, (0), 0 states 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 04:23:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6427 states to 6427 states and 11714 transitions. [2021-11-03 04:23:21,576 INFO L78 Accepts]: Start accepts. Automaton has 6427 states and 11714 transitions. Word has length 69 [2021-11-03 04:23:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:21,577 INFO L470 AbstractCegarLoop]: Abstraction has 6427 states and 11714 transitions. [2021-11-03 04:23:21,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6427 states and 11714 transitions. [2021-11-03 04:23:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 04:23:21,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:21,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:21,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:23:21,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:21,799 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash 285348761, now seen corresponding path program 1 times [2021-11-03 04:23:21,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:21,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659889162] [2021-11-03 04:23:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:21,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:21,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:21,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:21,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:23:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:22,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:22,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:22,711 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 04:23:22,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:24,147 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 04:23:24,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:24,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659889162] [2021-11-03 04:23:24,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659889162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:24,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:24,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:23:24,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749945759] [2021-11-03 04:23:24,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:24,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:24,150 INFO L87 Difference]: Start difference. First operand 6427 states and 11714 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 04:23:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:27,834 INFO L93 Difference]: Finished difference Result 20310 states and 37035 transitions. [2021-11-03 04:23:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:27,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 04:23:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:27,874 INFO L225 Difference]: With dead ends: 20310 [2021-11-03 04:23:27,874 INFO L226 Difference]: Without dead ends: 13936 [2021-11-03 04:23:27,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:23:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13936 states. [2021-11-03 04:23:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13936 to 8874. [2021-11-03 04:23:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8874 states, 8869 states have (on average 1.811139925583493) internal successors, (16063), 8873 states have internal predecessors, (16063), 0 states have call successors, (0), 0 states 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 04:23:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8874 states to 8874 states and 16063 transitions. [2021-11-03 04:23:28,490 INFO L78 Accepts]: Start accepts. Automaton has 8874 states and 16063 transitions. Word has length 72 [2021-11-03 04:23:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:28,491 INFO L470 AbstractCegarLoop]: Abstraction has 8874 states and 16063 transitions. [2021-11-03 04:23:28,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 04:23:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8874 states and 16063 transitions. [2021-11-03 04:23:28,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:23:28,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:28,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:28,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:28,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:28,709 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash -839160094, now seen corresponding path program 1 times [2021-11-03 04:23:28,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:28,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137736063] [2021-11-03 04:23:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:28,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:28,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:28,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:23:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:29,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:29,694 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 04:23:29,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:29,916 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 04:23:29,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:29,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137736063] [2021-11-03 04:23:29,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137736063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:29,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:29,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:23:29,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277272851] [2021-11-03 04:23:29,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:23:29,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:23:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:29,918 INFO L87 Difference]: Start difference. First operand 8874 states and 16063 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:35,454 INFO L93 Difference]: Finished difference Result 35220 states and 64175 transitions. [2021-11-03 04:23:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:23:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:23:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:35,508 INFO L225 Difference]: With dead ends: 35220 [2021-11-03 04:23:35,508 INFO L226 Difference]: Without dead ends: 26398 [2021-11-03 04:23:35,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26398 states. [2021-11-03 04:23:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26398 to 8888. [2021-11-03 04:23:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8888 states, 8883 states have (on average 1.8098615332657886) internal successors, (16077), 8887 states have internal predecessors, (16077), 0 states have call successors, (0), 0 states 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 04:23:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8888 states to 8888 states and 16077 transitions. [2021-11-03 04:23:36,124 INFO L78 Accepts]: Start accepts. Automaton has 8888 states and 16077 transitions. Word has length 73 [2021-11-03 04:23:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:36,124 INFO L470 AbstractCegarLoop]: Abstraction has 8888 states and 16077 transitions. [2021-11-03 04:23:36,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand 8888 states and 16077 transitions. [2021-11-03 04:23:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:23:36,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:36,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:36,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:36,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:36,345 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:36,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 999624567, now seen corresponding path program 1 times [2021-11-03 04:23:36,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:36,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609647082] [2021-11-03 04:23:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:36,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:36,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:36,348 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:36,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:23:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:36,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:23:36,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:37,147 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 04:23:37,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:37,397 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 04:23:37,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:37,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609647082] [2021-11-03 04:23:37,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609647082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:37,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:37,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:23:37,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050973746] [2021-11-03 04:23:37,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:23:37,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:23:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:37,399 INFO L87 Difference]: Start difference. First operand 8888 states and 16077 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 04:23:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:50,398 INFO L93 Difference]: Finished difference Result 27652 states and 50376 transitions. [2021-11-03 04:23:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:23:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 74 [2021-11-03 04:23:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:50,427 INFO L225 Difference]: With dead ends: 27652 [2021-11-03 04:23:50,427 INFO L226 Difference]: Without dead ends: 20432 [2021-11-03 04:23:50,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20432 states. [2021-11-03 04:23:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20432 to 15432. [2021-11-03 04:23:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15432 states, 15427 states have (on average 1.811304855124133) internal successors, (27943), 15431 states have internal predecessors, (27943), 0 states have call successors, (0), 0 states 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 04:23:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15432 states to 15432 states and 27943 transitions. [2021-11-03 04:23:51,290 INFO L78 Accepts]: Start accepts. Automaton has 15432 states and 27943 transitions. Word has length 74 [2021-11-03 04:23:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:51,290 INFO L470 AbstractCegarLoop]: Abstraction has 15432 states and 27943 transitions. [2021-11-03 04:23:51,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 04:23:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 15432 states and 27943 transitions. [2021-11-03 04:23:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:23:51,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:51,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:51,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:51,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:51,496 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash -11492683, now seen corresponding path program 1 times [2021-11-03 04:23:51,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:51,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505886100] [2021-11-03 04:23:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:51,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:51,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:51,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:23:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:23:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:52,355 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 04:23:52,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:52,584 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 04:23:52,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:52,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505886100] [2021-11-03 04:23:52,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505886100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:52,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:52,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:23:52,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039112863] [2021-11-03 04:23:52,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:52,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:52,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:52,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:52,587 INFO L87 Difference]: Start difference. First operand 15432 states and 27943 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:57,448 INFO L93 Difference]: Finished difference Result 34844 states and 63331 transitions. [2021-11-03 04:23:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 04:23:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:57,473 INFO L225 Difference]: With dead ends: 34844 [2021-11-03 04:23:57,473 INFO L226 Difference]: Without dead ends: 21065 [2021-11-03 04:23:57,482 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21065 states. [2021-11-03 04:23:58,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21065 to 15949. [2021-11-03 04:23:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15949 states, 15944 states have (on average 1.7844957350727546) internal successors, (28452), 15948 states have internal predecessors, (28452), 0 states have call successors, (0), 0 states 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 04:23:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15949 states to 15949 states and 28452 transitions. [2021-11-03 04:23:58,205 INFO L78 Accepts]: Start accepts. Automaton has 15949 states and 28452 transitions. Word has length 74 [2021-11-03 04:23:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:58,205 INFO L470 AbstractCegarLoop]: Abstraction has 15949 states and 28452 transitions. [2021-11-03 04:23:58,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 15949 states and 28452 transitions. [2021-11-03 04:23:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 04:23:58,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:58,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:58,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:58,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:58,408 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1348585297, now seen corresponding path program 1 times [2021-11-03 04:23:58,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:58,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900646109] [2021-11-03 04:23:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:58,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:58,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:58,412 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:58,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:23:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:59,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:59,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:59,228 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 04:23:59,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:59,451 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 04:23:59,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:59,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900646109] [2021-11-03 04:23:59,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900646109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:59,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:59,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:23:59,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116408076] [2021-11-03 04:23:59,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:23:59,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:23:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:59,453 INFO L87 Difference]: Start difference. First operand 15949 states and 28452 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 04:24:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:04,363 INFO L93 Difference]: Finished difference Result 113322 states and 203651 transitions. [2021-11-03 04:24:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:24:04,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 04:24:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:04,510 INFO L225 Difference]: With dead ends: 113322 [2021-11-03 04:24:04,511 INFO L226 Difference]: Without dead ends: 97421 [2021-11-03 04:24:04,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:24:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97421 states. [2021-11-03 04:24:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97421 to 25771. [2021-11-03 04:24:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25771 states, 25766 states have (on average 1.7930994333617947) internal successors, (46201), 25770 states have internal predecessors, (46201), 0 states have call successors, (0), 0 states 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 04:24:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25771 states to 25771 states and 46201 transitions. [2021-11-03 04:24:07,026 INFO L78 Accepts]: Start accepts. Automaton has 25771 states and 46201 transitions. Word has length 76 [2021-11-03 04:24:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:07,026 INFO L470 AbstractCegarLoop]: Abstraction has 25771 states and 46201 transitions. [2021-11-03 04:24:07,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 04:24:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 25771 states and 46201 transitions. [2021-11-03 04:24:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 04:24:07,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:07,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:07,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:07,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:07,230 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1420971855, now seen corresponding path program 1 times [2021-11-03 04:24:07,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:07,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414227737] [2021-11-03 04:24:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:07,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:07,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:07,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:07,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:24:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:07,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:24:07,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:08,145 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 04:24:08,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:08,376 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 04:24:08,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:08,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414227737] [2021-11-03 04:24:08,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414227737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:08,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:08,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:24:08,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110840489] [2021-11-03 04:24:08,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:24:08,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:24:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:24:08,378 INFO L87 Difference]: Start difference. First operand 25771 states and 46201 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 04:24:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:12,689 INFO L93 Difference]: Finished difference Result 63283 states and 114362 transitions. [2021-11-03 04:24:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:24:12,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 04:24:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:12,859 INFO L225 Difference]: With dead ends: 63283 [2021-11-03 04:24:12,859 INFO L226 Difference]: Without dead ends: 43146 [2021-11-03 04:24:12,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:24:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43146 states. [2021-11-03 04:24:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43146 to 25736. [2021-11-03 04:24:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25736 states, 25731 states have (on average 1.7928180016322723) internal successors, (46131), 25735 states have internal predecessors, (46131), 0 states have call successors, (0), 0 states 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 04:24:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25736 states to 25736 states and 46131 transitions. [2021-11-03 04:24:14,439 INFO L78 Accepts]: Start accepts. Automaton has 25736 states and 46131 transitions. Word has length 76 [2021-11-03 04:24:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:14,440 INFO L470 AbstractCegarLoop]: Abstraction has 25736 states and 46131 transitions. [2021-11-03 04:24:14,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 04:24:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25736 states and 46131 transitions. [2021-11-03 04:24:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 04:24:14,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:14,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:14,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 04:24:14,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:14,659 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash 987402275, now seen corresponding path program 1 times [2021-11-03 04:24:14,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:14,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240642503] [2021-11-03 04:24:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:14,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:14,662 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:14,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:24:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:15,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:24:15,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:15,590 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 04:24:15,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:15,854 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 04:24:15,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:15,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240642503] [2021-11-03 04:24:15,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240642503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:15,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:15,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:24:15,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542408666] [2021-11-03 04:24:15,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:24:15,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:24:15,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:15,857 INFO L87 Difference]: Start difference. First operand 25736 states and 46131 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 04:24:18,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:18,813 INFO L93 Difference]: Finished difference Result 69100 states and 124134 transitions. [2021-11-03 04:24:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:24:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 04:24:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:18,881 INFO L225 Difference]: With dead ends: 69100 [2021-11-03 04:24:18,881 INFO L226 Difference]: Without dead ends: 45267 [2021-11-03 04:24:18,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 04:24:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45267 states. [2021-11-03 04:24:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45267 to 45252. [2021-11-03 04:24:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45252 states, 45247 states have (on average 1.798483877384136) internal successors, (81376), 45251 states have internal predecessors, (81376), 0 states have call successors, (0), 0 states 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 04:24:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45252 states to 45252 states and 81376 transitions. [2021-11-03 04:24:21,910 INFO L78 Accepts]: Start accepts. Automaton has 45252 states and 81376 transitions. Word has length 83 [2021-11-03 04:24:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:21,910 INFO L470 AbstractCegarLoop]: Abstraction has 45252 states and 81376 transitions. [2021-11-03 04:24:21,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 04:24:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 45252 states and 81376 transitions. [2021-11-03 04:24:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:24:21,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:21,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:21,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-03 04:24:22,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:22,133 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1606438974, now seen corresponding path program 1 times [2021-11-03 04:24:22,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:22,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219420281] [2021-11-03 04:24:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:22,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:22,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:22,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969f3b7c-bc61-4604-89bf-c42fbfe5fd2f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:24:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:22,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:24:22,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:23,094 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 04:24:23,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:23,315 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 04:24:23,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219420281] [2021-11-03 04:24:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219420281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:23,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:24:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374239586] [2021-11-03 04:24:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:24:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:24:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:23,318 INFO L87 Difference]: Start difference. First operand 45252 states and 81376 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:27,995 INFO L93 Difference]: Finished difference Result 126372 states and 227497 transitions. [2021-11-03 04:24:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:24:27,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 04:24:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:28,135 INFO L225 Difference]: With dead ends: 126372 [2021-11-03 04:24:28,135 INFO L226 Difference]: Without dead ends: 84140 [2021-11-03 04:24:28,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 04:24:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84140 states.