./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.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_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/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_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/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_54c3ed26-3198-449d-ac6d-d5065ca85687/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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:41:27,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:41:27,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:41:27,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:41:27,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:41:27,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:41:27,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:41:27,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:41:27,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:41:27,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:41:27,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:41:27,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:41:27,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:41:27,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:41:27,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:41:27,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:41:27,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:41:27,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:41:27,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:41:27,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:41:27,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:41:27,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:41:27,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:41:27,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:41:27,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:41:27,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:41:27,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:41:27,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:41:27,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:41:27,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:41:27,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:41:27,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:41:27,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:41:27,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:41:27,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:41:27,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:41:27,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:41:27,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:41:27,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:41:27,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:41:27,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:41:27,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:41:27,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:41:27,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:41:27,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:41:27,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:41:27,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:41:27,291 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:41:27,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:41:27,292 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:41:27,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:41:27,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:41:27,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:41:27,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:41:27,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:41:27,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:41:27,294 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:41:27,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:41:27,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:41:27,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:41:27,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:41:27,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:41:27,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:41:27,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:41:27,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:41:27,296 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:41:27,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:41:27,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:41:27,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:41:27,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:41:27,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:41:27,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:41:27,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:27,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:41:27,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:41:27,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:41:27,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:41:27,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:41:27,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:41:27,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:41:27,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:41:27,300 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_54c3ed26-3198-449d-ac6d-d5065ca85687/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2021-11-03 03:41:27,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:41:27,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:41:27,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:41:27,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:41:27,635 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:41:27,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-03 03:41:27,701 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/e6d6382e7/85528ef5bfec49a1887be9617b9b1d64/FLAGf9f73783a [2021-11-03 03:41:28,435 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:41:28,436 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-03 03:41:28,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/e6d6382e7/85528ef5bfec49a1887be9617b9b1d64/FLAGf9f73783a [2021-11-03 03:41:28,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/e6d6382e7/85528ef5bfec49a1887be9617b9b1d64 [2021-11-03 03:41:28,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:41:28,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:41:28,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:28,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:41:28,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:41:28,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:28" (1/1) ... [2021-11-03 03:41:28,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@874269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:28, skipping insertion in model container [2021-11-03 03:41:28,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:28" (1/1) ... [2021-11-03 03:41:28,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:41:28,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:29,145 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_54c3ed26-3198-449d-ac6d-d5065ca85687/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-03 03:41:29,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:29,366 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 03:41:29,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@152961f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:29, skipping insertion in model container [2021-11-03 03:41:29,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:29,367 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:41:29,369 INFO L168 Benchmark]: Toolchain (without parser) took 759.18 ms. Allocated memory is still 107.0 MB. Free memory was 63.2 MB in the beginning and 68.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:41:29,370 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 107.0 MB. Free memory is still 82.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:41:29,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.28 ms. Allocated memory is still 107.0 MB. Free memory was 63.1 MB in the beginning and 68.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:41:29,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 107.0 MB. Free memory is still 82.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.28 ms. Allocated memory is still 107.0 MB. Free memory was 63.1 MB in the beginning and 68.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 880]: 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_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/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_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/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_54c3ed26-3198-449d-ac6d-d5065ca85687/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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:41:31,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:41:31,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:41:31,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:41:31,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:41:31,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:41:31,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:41:31,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:41:31,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:41:31,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:41:31,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:41:31,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:41:31,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:41:31,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:41:31,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:41:31,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:41:31,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:41:31,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:41:31,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:41:31,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:41:31,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:41:31,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:41:31,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:41:31,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:41:31,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:41:31,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:41:31,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:41:31,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:41:31,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:41:31,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:41:31,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:41:31,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:41:31,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:41:31,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:41:31,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:41:31,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:41:31,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:41:31,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:41:31,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:41:31,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:41:31,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:41:31,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:41:31,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:41:31,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:41:31,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:41:31,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:41:31,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:41:31,834 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:41:31,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:41:31,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:41:31,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:41:31,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:41:31,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:41:31,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:41:31,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:41:31,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:41:31,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:41:31,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:41:31,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:41:31,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:41:31,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:41:31,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:41:31,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:41:31,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:41:31,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:41:31,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:41:31,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:41:31,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:41:31,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:31,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:41:31,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:41:31,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:41:31,843 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:41:31,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:31,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:41:31,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:41:31,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:41:31,844 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_54c3ed26-3198-449d-ac6d-d5065ca85687/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2021-11-03 03:41:32,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:41:32,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:41:32,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:41:32,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:41:32,246 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:41:32,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-03 03:41:32,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/5d19c024d/7fb7077c47574250bd624c15bd1932cb/FLAGa559aae0a [2021-11-03 03:41:33,108 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:41:33,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-03 03:41:33,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/5d19c024d/7fb7077c47574250bd624c15bd1932cb/FLAGa559aae0a [2021-11-03 03:41:33,276 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/data/5d19c024d/7fb7077c47574250bd624c15bd1932cb [2021-11-03 03:41:33,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:41:33,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:41:33,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:33,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:41:33,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:41:33,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:33" (1/1) ... [2021-11-03 03:41:33,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417945ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:33, skipping insertion in model container [2021-11-03 03:41:33,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:33" (1/1) ... [2021-11-03 03:41:33,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:41:33,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:33,703 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_54c3ed26-3198-449d-ac6d-d5065ca85687/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-03 03:41:33,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:34,013 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:41:34,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:41:34,087 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_54c3ed26-3198-449d-ac6d-d5065ca85687/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-03 03:41:34,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:34,175 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:41:34,233 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_54c3ed26-3198-449d-ac6d-d5065ca85687/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-03 03:41:34,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:41:34,334 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:41:34,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34 WrapperNode [2021-11-03 03:41:34,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:41:34,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:41:34,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:41:34,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:41:34,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:41:34,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:41:34,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:41:34,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:41:34,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:41:34,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:41:34,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:41:34,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:41:34,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (1/1) ... [2021-11-03 03:41:34,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:41:34,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:34,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:41:34,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:41:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:41:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:41:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:41:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:41:43,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:41:43,231 INFO L299 CfgBuilder]: Removed 517 assume(true) statements. [2021-11-03 03:41:43,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:43 BoogieIcfgContainer [2021-11-03 03:41:43,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:41:43,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:41:43,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:41:43,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:41:43,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:41:33" (1/3) ... [2021-11-03 03:41:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed53473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:43, skipping insertion in model container [2021-11-03 03:41:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:34" (2/3) ... [2021-11-03 03:41:43,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed53473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:43, skipping insertion in model container [2021-11-03 03:41:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:43" (3/3) ... [2021-11-03 03:41:43,246 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2021-11-03 03:41:43,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:41:43,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 03:41:43,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:41:43,334 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 03:41:43,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 03:41:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 2304 states, 2298 states have (on average 1.8986074847693646) internal successors, (4363), 2303 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states 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 03:41:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:41:43,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:43,443 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] [2021-11-03 03:41:43,445 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 03:41:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash 245285468, now seen corresponding path program 1 times [2021-11-03 03:41:43,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:43,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027345676] [2021-11-03 03:41:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:43,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:43,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:43,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:43,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:41:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:43,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:41:43,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:44,065 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 03:41:44,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:44,169 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 03:41:44,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:44,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027345676] [2021-11-03 03:41:44,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027345676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:44,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:44,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:41:44,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813450850] [2021-11-03 03:41:44,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:41:44,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:41:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:41:44,207 INFO L87 Difference]: Start difference. First operand has 2304 states, 2298 states have (on average 1.8986074847693646) internal successors, (4363), 2303 states have internal predecessors, (4363), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:44,323 INFO L93 Difference]: Finished difference Result 2323 states and 4386 transitions. [2021-11-03 03:41:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:41:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:41:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:44,365 INFO L225 Difference]: With dead ends: 2323 [2021-11-03 03:41:44,366 INFO L226 Difference]: Without dead ends: 2300 [2021-11-03 03:41:44,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 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 03:41:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-03 03:41:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2021-11-03 03:41:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2295 states have (on average 1.8958605664488017) internal successors, (4351), 2299 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states 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 03:41:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 4351 transitions. [2021-11-03 03:41:44,545 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 4351 transitions. Word has length 44 [2021-11-03 03:41:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:44,546 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 4351 transitions. [2021-11-03 03:41:44,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 4351 transitions. [2021-11-03 03:41:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 03:41:44,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:44,553 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] [2021-11-03 03:41:44,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:41:44,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:44,767 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 03:41:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash -671159509, now seen corresponding path program 1 times [2021-11-03 03:41:44,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:44,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671069560] [2021-11-03 03:41:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:44,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:44,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:44,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:41:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:45,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:45,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:45,272 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 03:41:45,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:45,427 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 03:41:45,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:45,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671069560] [2021-11-03 03:41:45,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671069560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:45,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:45,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:41:45,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875356248] [2021-11-03 03:41:45,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:45,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:45,433 INFO L87 Difference]: Start difference. First operand 2300 states and 4351 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:41:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:45,624 INFO L93 Difference]: Finished difference Result 4587 states and 8683 transitions. [2021-11-03 03:41:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:45,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 03:41:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:45,640 INFO L225 Difference]: With dead ends: 4587 [2021-11-03 03:41:45,640 INFO L226 Difference]: Without dead ends: 2300 [2021-11-03 03:41:45,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 03:41:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-03 03:41:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2021-11-03 03:41:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2295 states have (on average 1.8932461873638344) internal successors, (4345), 2299 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states 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 03:41:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 4345 transitions. [2021-11-03 03:41:45,727 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 4345 transitions. Word has length 46 [2021-11-03 03:41:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:45,727 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 4345 transitions. [2021-11-03 03:41:45,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:41:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 4345 transitions. [2021-11-03 03:41:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 03:41:45,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:45,731 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] [2021-11-03 03:41:45,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:45,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:45,944 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 03:41:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 895862581, now seen corresponding path program 1 times [2021-11-03 03:41:45,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:45,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964760241] [2021-11-03 03:41:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:45,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:45,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:45,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:45,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:41:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:46,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:41:46,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:46,468 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 03:41:46,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:46,620 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 03:41:46,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:46,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964760241] [2021-11-03 03:41:46,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964760241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:46,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:46,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:41:46,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426678853] [2021-11-03 03:41:46,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:41:46,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:41:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:41:46,627 INFO L87 Difference]: Start difference. First operand 2300 states and 4345 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 03:41:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:46,815 INFO L93 Difference]: Finished difference Result 4551 states and 8606 transitions. [2021-11-03 03:41:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:46,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 51 [2021-11-03 03:41:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:46,832 INFO L225 Difference]: With dead ends: 4551 [2021-11-03 03:41:46,832 INFO L226 Difference]: Without dead ends: 2273 [2021-11-03 03:41:46,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 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 03:41:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-11-03 03:41:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2021-11-03 03:41:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.8910934744268078) internal successors, (4289), 2272 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states 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 03:41:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4289 transitions. [2021-11-03 03:41:46,983 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4289 transitions. Word has length 51 [2021-11-03 03:41:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:46,983 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 4289 transitions. [2021-11-03 03:41:46,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 03:41:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4289 transitions. [2021-11-03 03:41:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:41:46,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:46,987 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] [2021-11-03 03:41:47,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:47,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:47,204 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 03:41:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash 583980247, now seen corresponding path program 1 times [2021-11-03 03:41:47,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:47,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625981701] [2021-11-03 03:41:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:47,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:47,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:47,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:41:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:47,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:47,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:47,777 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 03:41:47,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:47,940 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 03:41:47,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:47,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625981701] [2021-11-03 03:41:47,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625981701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:47,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:47,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:41:47,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434962524] [2021-11-03 03:41:47,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:47,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:47,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:47,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:47,944 INFO L87 Difference]: Start difference. First operand 2273 states and 4289 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:48,072 INFO L93 Difference]: Finished difference Result 4524 states and 8550 transitions. [2021-11-03 03:41:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:48,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 03:41:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:48,087 INFO L225 Difference]: With dead ends: 4524 [2021-11-03 03:41:48,088 INFO L226 Difference]: Without dead ends: 2273 [2021-11-03 03:41:48,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 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 03:41:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-11-03 03:41:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2021-11-03 03:41:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.8884479717813052) internal successors, (4283), 2272 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states 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 03:41:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4283 transitions. [2021-11-03 03:41:48,190 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4283 transitions. Word has length 52 [2021-11-03 03:41:48,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:48,191 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 4283 transitions. [2021-11-03 03:41:48,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4283 transitions. [2021-11-03 03:41:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:41:48,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:48,194 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] [2021-11-03 03:41:48,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:48,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:48,411 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 03:41:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash 967827432, now seen corresponding path program 1 times [2021-11-03 03:41:48,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:48,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341245675] [2021-11-03 03:41:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:48,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:48,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:48,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:48,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:41:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:48,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:41:48,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:48,996 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 03:41:48,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:49,164 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 03:41:49,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:49,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341245675] [2021-11-03 03:41:49,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341245675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:49,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:49,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:41:49,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928250474] [2021-11-03 03:41:49,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:41:49,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:41:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:41:49,172 INFO L87 Difference]: Start difference. First operand 2273 states and 4283 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:49,377 INFO L93 Difference]: Finished difference Result 4518 states and 8533 transitions. [2021-11-03 03:41:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:41:49,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 03:41:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:49,393 INFO L225 Difference]: With dead ends: 4518 [2021-11-03 03:41:49,393 INFO L226 Difference]: Without dead ends: 2270 [2021-11-03 03:41:49,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 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 03:41:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-03 03:41:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2270. [2021-11-03 03:41:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2265 states have (on average 1.8874172185430464) internal successors, (4275), 2269 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states 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 03:41:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 4275 transitions. [2021-11-03 03:41:49,495 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 4275 transitions. Word has length 57 [2021-11-03 03:41:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:49,496 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 4275 transitions. [2021-11-03 03:41:49,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 4275 transitions. [2021-11-03 03:41:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 03:41:49,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:49,500 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] [2021-11-03 03:41:49,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:49,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:49,713 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 03:41:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:49,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1508689336, now seen corresponding path program 1 times [2021-11-03 03:41:49,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:49,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688896361] [2021-11-03 03:41:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:49,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:49,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:49,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:49,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:41:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:50,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:41:50,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:50,405 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 03:41:50,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:50,612 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 03:41:50,613 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:50,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688896361] [2021-11-03 03:41:50,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688896361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:50,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:50,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:41:50,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557406846] [2021-11-03 03:41:50,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:41:50,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:41:50,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:41:50,615 INFO L87 Difference]: Start difference. First operand 2270 states and 4275 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:41:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:52,228 INFO L93 Difference]: Finished difference Result 8236 states and 15579 transitions. [2021-11-03 03:41:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:41:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 03:41:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:52,268 INFO L225 Difference]: With dead ends: 8236 [2021-11-03 03:41:52,268 INFO L226 Difference]: Without dead ends: 5997 [2021-11-03 03:41:52,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 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 03:41:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5997 states. [2021-11-03 03:41:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5997 to 2270. [2021-11-03 03:41:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2265 states have (on average 1.8423841059602648) internal successors, (4173), 2269 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states 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 03:41:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 4173 transitions. [2021-11-03 03:41:52,459 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 4173 transitions. Word has length 58 [2021-11-03 03:41:52,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:52,460 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 4173 transitions. [2021-11-03 03:41:52,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:41:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 4173 transitions. [2021-11-03 03:41:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 03:41:52,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:52,463 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] [2021-11-03 03:41:52,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:52,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:52,677 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 03:41:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1712031068, now seen corresponding path program 1 times [2021-11-03 03:41:52,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:52,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115784943] [2021-11-03 03:41:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:52,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:52,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:52,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:41:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:53,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:41:53,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:53,411 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 03:41:53,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:53,619 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 03:41:53,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:53,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115784943] [2021-11-03 03:41:53,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115784943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:53,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:53,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:41:53,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372138345] [2021-11-03 03:41:53,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:41:53,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:53,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:41:53,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:41:53,620 INFO L87 Difference]: Start difference. First operand 2270 states and 4173 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:54,656 INFO L93 Difference]: Finished difference Result 6329 states and 11766 transitions. [2021-11-03 03:41:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:41:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 03:41:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:54,704 INFO L225 Difference]: With dead ends: 6329 [2021-11-03 03:41:54,704 INFO L226 Difference]: Without dead ends: 4108 [2021-11-03 03:41:54,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 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 03:41:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-11-03 03:41:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 2236. [2021-11-03 03:41:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2231 states have (on average 1.842671447781264) internal successors, (4111), 2235 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states 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 03:41:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 4111 transitions. [2021-11-03 03:41:54,832 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 4111 transitions. Word has length 66 [2021-11-03 03:41:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:54,833 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 4111 transitions. [2021-11-03 03:41:54,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:54,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 4111 transitions. [2021-11-03 03:41:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 03:41:54,852 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:54,852 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] [2021-11-03 03:41:54,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:55,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:55,053 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 03:41:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -300682044, now seen corresponding path program 1 times [2021-11-03 03:41:55,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:55,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684846187] [2021-11-03 03:41:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:55,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:55,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:55,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:55,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:41:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:55,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:41:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:55,795 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 03:41:55,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:56,008 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 03:41:56,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:56,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684846187] [2021-11-03 03:41:56,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684846187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:56,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:56,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:41:56,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336878838] [2021-11-03 03:41:56,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:41:56,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:41:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:41:56,011 INFO L87 Difference]: Start difference. First operand 2236 states and 4111 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 03:41:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:57,717 INFO L93 Difference]: Finished difference Result 8850 states and 16397 transitions. [2021-11-03 03:41:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:41:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-03 03:41:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:57,735 INFO L225 Difference]: With dead ends: 8850 [2021-11-03 03:41:57,735 INFO L226 Difference]: Without dead ends: 6662 [2021-11-03 03:41:57,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 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 03:41:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6662 states. [2021-11-03 03:41:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6662 to 2240. [2021-11-03 03:41:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2235 states have (on average 1.8411633109619687) internal successors, (4115), 2239 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states 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 03:41:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 4115 transitions. [2021-11-03 03:41:57,900 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 4115 transitions. Word has length 68 [2021-11-03 03:41:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:57,900 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 4115 transitions. [2021-11-03 03:41:57,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 03:41:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 4115 transitions. [2021-11-03 03:41:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 03:41:57,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:57,903 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 03:41:57,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:58,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:58,118 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 03:41:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -44149649, now seen corresponding path program 1 times [2021-11-03 03:41:58,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:58,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113642692] [2021-11-03 03:41:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:58,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:58,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:58,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:58,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:41:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:58,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:41:58,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:58,896 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 03:41:58,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:59,114 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 03:41:59,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:59,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113642692] [2021-11-03 03:41:59,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113642692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:59,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:59,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:41:59,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862611276] [2021-11-03 03:41:59,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:59,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:59,117 INFO L87 Difference]: Start difference. First operand 2240 states and 4115 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 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 03:42:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:00,420 INFO L93 Difference]: Finished difference Result 6222 states and 11498 transitions. [2021-11-03 03:42:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 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 03:42:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:00,429 INFO L225 Difference]: With dead ends: 6222 [2021-11-03 03:42:00,429 INFO L226 Difference]: Without dead ends: 4017 [2021-11-03 03:42:00,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 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 03:42:00,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2021-11-03 03:42:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 3062. [2021-11-03 03:42:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3057 states have (on average 1.8263002944062807) internal successors, (5583), 3061 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states 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 03:42:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 5583 transitions. [2021-11-03 03:42:00,598 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 5583 transitions. Word has length 69 [2021-11-03 03:42:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:00,598 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 5583 transitions. [2021-11-03 03:42:00,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 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 03:42:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 5583 transitions. [2021-11-03 03:42:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 03:42:00,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:00,601 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] [2021-11-03 03:42:00,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:00,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:00,818 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 03:42:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash 347223289, now seen corresponding path program 1 times [2021-11-03 03:42:00,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:00,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129824333] [2021-11-03 03:42:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:00,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:00,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:00,820 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:00,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:42:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:01,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:42:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:01,523 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 03:42:01,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:01,744 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 03:42:01,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:01,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129824333] [2021-11-03 03:42:01,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129824333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:01,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:01,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:42:01,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273113808] [2021-11-03 03:42:01,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:01,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:01,746 INFO L87 Difference]: Start difference. First operand 3062 states and 5583 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:02,593 INFO L93 Difference]: Finished difference Result 22139 states and 40657 transitions. [2021-11-03 03:42:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:42:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 03:42:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:02,640 INFO L225 Difference]: With dead ends: 22139 [2021-11-03 03:42:02,640 INFO L226 Difference]: Without dead ends: 19121 [2021-11-03 03:42:02,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 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 03:42:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19121 states. [2021-11-03 03:42:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19121 to 5644. [2021-11-03 03:42:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5644 states, 5639 states have (on average 1.83844653307324) internal successors, (10367), 5643 states have internal predecessors, (10367), 0 states have call successors, (0), 0 states 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 03:42:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 10367 transitions. [2021-11-03 03:42:03,037 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 10367 transitions. Word has length 71 [2021-11-03 03:42:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:03,038 INFO L470 AbstractCegarLoop]: Abstraction has 5644 states and 10367 transitions. [2021-11-03 03:42:03,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 10367 transitions. [2021-11-03 03:42:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 03:42:03,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:03,047 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] [2021-11-03 03:42:03,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:03,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:03,261 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 03:42:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash 621982903, now seen corresponding path program 1 times [2021-11-03 03:42:03,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:03,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725593246] [2021-11-03 03:42:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:03,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:03,263 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:42:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:03,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:03,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:04,003 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 03:42:04,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:04,209 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 03:42:04,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725593246] [2021-11-03 03:42:04,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725593246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:04,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:04,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:42:04,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065335667] [2021-11-03 03:42:04,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:04,212 INFO L87 Difference]: Start difference. First operand 5644 states and 10367 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:04,936 INFO L93 Difference]: Finished difference Result 10233 states and 18710 transitions. [2021-11-03 03:42:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:42:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 03:42:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:04,956 INFO L225 Difference]: With dead ends: 10233 [2021-11-03 03:42:04,956 INFO L226 Difference]: Without dead ends: 7767 [2021-11-03 03:42:04,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 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 03:42:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7767 states. [2021-11-03 03:42:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7767 to 5634. [2021-11-03 03:42:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5634 states, 5629 states have (on average 1.8381595310001777) internal successors, (10347), 5633 states have internal predecessors, (10347), 0 states have call successors, (0), 0 states 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 03:42:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5634 states to 5634 states and 10347 transitions. [2021-11-03 03:42:05,282 INFO L78 Accepts]: Start accepts. Automaton has 5634 states and 10347 transitions. Word has length 71 [2021-11-03 03:42:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:05,282 INFO L470 AbstractCegarLoop]: Abstraction has 5634 states and 10347 transitions. [2021-11-03 03:42:05,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5634 states and 10347 transitions. [2021-11-03 03:42:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 03:42:05,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:05,285 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 03:42:05,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:05,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:05,499 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 03:42:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1817580291, now seen corresponding path program 1 times [2021-11-03 03:42:05,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:05,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112046151] [2021-11-03 03:42:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:05,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:05,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:05,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:05,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:42:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:06,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:42:06,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:06,258 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 03:42:06,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:06,481 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 03:42:06,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:06,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112046151] [2021-11-03 03:42:06,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112046151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:06,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:06,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:42:06,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122556290] [2021-11-03 03:42:06,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:06,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:06,483 INFO L87 Difference]: Start difference. First operand 5634 states and 10347 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 03:42:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:07,190 INFO L93 Difference]: Finished difference Result 17162 states and 31584 transitions. [2021-11-03 03:42:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:42:07,191 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 03:42:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:07,215 INFO L225 Difference]: With dead ends: 17162 [2021-11-03 03:42:07,215 INFO L226 Difference]: Without dead ends: 14702 [2021-11-03 03:42:07,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 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 03:42:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2021-11-03 03:42:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 7833. [2021-11-03 03:42:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7833 states, 7828 states have (on average 1.831374552887072) internal successors, (14336), 7832 states have internal predecessors, (14336), 0 states have call successors, (0), 0 states 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 03:42:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7833 states to 7833 states and 14336 transitions. [2021-11-03 03:42:07,578 INFO L78 Accepts]: Start accepts. Automaton has 7833 states and 14336 transitions. Word has length 73 [2021-11-03 03:42:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:07,579 INFO L470 AbstractCegarLoop]: Abstraction has 7833 states and 14336 transitions. [2021-11-03 03:42:07,579 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 03:42:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7833 states and 14336 transitions. [2021-11-03 03:42:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 03:42:07,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:07,582 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] [2021-11-03 03:42:07,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 03:42:07,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:07,797 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 03:42:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1493535569, now seen corresponding path program 1 times [2021-11-03 03:42:07,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:07,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191799222] [2021-11-03 03:42:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:07,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:07,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:07,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:42:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:08,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:08,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:08,689 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 03:42:08,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:08,947 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 03:42:08,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:08,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191799222] [2021-11-03 03:42:08,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191799222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:08,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:08,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:42:08,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106565306] [2021-11-03 03:42:08,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:08,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:08,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:08,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:08,949 INFO L87 Difference]: Start difference. First operand 7833 states and 14336 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 03:42:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:11,396 INFO L93 Difference]: Finished difference Result 34434 states and 63435 transitions. [2021-11-03 03:42:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:42:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 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 75 [2021-11-03 03:42:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:11,451 INFO L225 Difference]: With dead ends: 34434 [2021-11-03 03:42:11,452 INFO L226 Difference]: Without dead ends: 29775 [2021-11-03 03:42:11,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:42:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29775 states. [2021-11-03 03:42:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29775 to 11363. [2021-11-03 03:42:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11358 states have (on average 1.8403768269061453) internal successors, (20903), 11362 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states 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 03:42:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 20903 transitions. [2021-11-03 03:42:12,184 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 20903 transitions. Word has length 75 [2021-11-03 03:42:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:12,184 INFO L470 AbstractCegarLoop]: Abstraction has 11363 states and 20903 transitions. [2021-11-03 03:42:12,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 03:42:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 20903 transitions. [2021-11-03 03:42:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:42:12,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:12,188 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] [2021-11-03 03:42:12,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:12,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:12,401 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 03:42:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 155626734, now seen corresponding path program 1 times [2021-11-03 03:42:12,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:12,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430248260] [2021-11-03 03:42:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:12,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:12,404 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:12,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:42:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:13,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:42:13,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:13,260 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 03:42:13,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:13,428 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 03:42:13,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:13,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430248260] [2021-11-03 03:42:13,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430248260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:13,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:13,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:42:13,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875486624] [2021-11-03 03:42:13,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:13,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:13,430 INFO L87 Difference]: Start difference. First operand 11363 states and 20903 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 03:42:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:13,966 INFO L93 Difference]: Finished difference Result 19684 states and 36080 transitions. [2021-11-03 03:42:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:13,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 82 [2021-11-03 03:42:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:13,982 INFO L225 Difference]: With dead ends: 19684 [2021-11-03 03:42:13,983 INFO L226 Difference]: Without dead ends: 11378 [2021-11-03 03:42:13,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 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 03:42:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11378 states. [2021-11-03 03:42:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 11363. [2021-11-03 03:42:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11358 states have (on average 1.8306920232435289) internal successors, (20793), 11362 states have internal predecessors, (20793), 0 states have call successors, (0), 0 states 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 03:42:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 20793 transitions. [2021-11-03 03:42:14,725 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 20793 transitions. Word has length 82 [2021-11-03 03:42:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:14,726 INFO L470 AbstractCegarLoop]: Abstraction has 11363 states and 20793 transitions. [2021-11-03 03:42:14,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 03:42:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 20793 transitions. [2021-11-03 03:42:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:42:14,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:14,730 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 03:42:14,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 03:42:14,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:14,946 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 03:42:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1233251158, now seen corresponding path program 1 times [2021-11-03 03:42:14,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:14,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085236114] [2021-11-03 03:42:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:14,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:14,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:14,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:14,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:42:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:15,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:15,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:15,894 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 03:42:15,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:16,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:16,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085236114] [2021-11-03 03:42:16,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085236114] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:16,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:16,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:42:16,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876837161] [2021-11-03 03:42:16,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:16,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:16,198 INFO L87 Difference]: Start difference. First operand 11363 states and 20793 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 03:42:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:18,071 INFO L93 Difference]: Finished difference Result 29960 states and 54676 transitions. [2021-11-03 03:42:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:42:18,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 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 03:42:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:18,101 INFO L225 Difference]: With dead ends: 29960 [2021-11-03 03:42:18,101 INFO L226 Difference]: Without dead ends: 21992 [2021-11-03 03:42:18,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:42:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21992 states. [2021-11-03 03:42:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21992 to 9931. [2021-11-03 03:42:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9931 states, 9926 states have (on average 1.8191617973000203) internal successors, (18057), 9930 states have internal predecessors, (18057), 0 states have call successors, (0), 0 states 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 03:42:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 18057 transitions. [2021-11-03 03:42:18,636 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 18057 transitions. Word has length 83 [2021-11-03 03:42:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:18,637 INFO L470 AbstractCegarLoop]: Abstraction has 9931 states and 18057 transitions. [2021-11-03 03:42:18,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 03:42:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 18057 transitions. [2021-11-03 03:42:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:42:18,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:18,640 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 03:42:18,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:18,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:18,849 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 03:42:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 222133908, now seen corresponding path program 1 times [2021-11-03 03:42:18,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:18,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839177608] [2021-11-03 03:42:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:18,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:18,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:18,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:42:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:19,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:19,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:19,885 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 03:42:19,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:20,159 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 03:42:20,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:20,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839177608] [2021-11-03 03:42:20,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839177608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:20,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:20,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 03:42:20,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17834220] [2021-11-03 03:42:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:42:20,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:42:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:42:20,162 INFO L87 Difference]: Start difference. First operand 9931 states and 18057 transitions. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 03:42:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:29,995 INFO L93 Difference]: Finished difference Result 62599 states and 112632 transitions. [2021-11-03 03:42:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 03:42:29,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 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 03:42:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:30,195 INFO L225 Difference]: With dead ends: 62599 [2021-11-03 03:42:30,195 INFO L226 Difference]: Without dead ends: 54166 [2021-11-03 03:42:30,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 03:42:30,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54166 states. [2021-11-03 03:42:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54166 to 21940. [2021-11-03 03:42:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21940 states, 21935 states have (on average 1.8133576475951676) internal successors, (39776), 21939 states have internal predecessors, (39776), 0 states have call successors, (0), 0 states 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 03:42:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21940 states to 21940 states and 39776 transitions. [2021-11-03 03:42:31,519 INFO L78 Accepts]: Start accepts. Automaton has 21940 states and 39776 transitions. Word has length 83 [2021-11-03 03:42:31,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:31,520 INFO L470 AbstractCegarLoop]: Abstraction has 21940 states and 39776 transitions. [2021-11-03 03:42:31,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 03:42:31,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21940 states and 39776 transitions. [2021-11-03 03:42:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 03:42:31,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:31,522 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 03:42:31,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:31,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:31,724 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 03:42:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2083326843, now seen corresponding path program 1 times [2021-11-03 03:42:31,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:31,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678176655] [2021-11-03 03:42:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:31,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:31,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:31,732 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:31,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 03:42:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:32,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:42:32,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:32,698 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 03:42:32,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:32,935 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 03:42:32,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:32,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678176655] [2021-11-03 03:42:32,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678176655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:32,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:32,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:42:32,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146349400] [2021-11-03 03:42:32,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:42:32,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:42:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:42:32,938 INFO L87 Difference]: Start difference. First operand 21940 states and 39776 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 03:42:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:35,536 INFO L93 Difference]: Finished difference Result 63854 states and 115827 transitions. [2021-11-03 03:42:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:42:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 03:42:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:35,602 INFO L225 Difference]: With dead ends: 63854 [2021-11-03 03:42:35,602 INFO L226 Difference]: Without dead ends: 43432 [2021-11-03 03:42:35,623 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 03:42:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43432 states. [2021-11-03 03:42:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43432 to 43430. [2021-11-03 03:42:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43430 states, 43425 states have (on average 1.815152561888313) internal successors, (78823), 43429 states have internal predecessors, (78823), 0 states have call successors, (0), 0 states 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 03:42:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43430 states to 43430 states and 78823 transitions. [2021-11-03 03:42:37,814 INFO L78 Accepts]: Start accepts. Automaton has 43430 states and 78823 transitions. Word has length 84 [2021-11-03 03:42:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:37,814 INFO L470 AbstractCegarLoop]: Abstraction has 43430 states and 78823 transitions. [2021-11-03 03:42:37,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 03:42:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 43430 states and 78823 transitions. [2021-11-03 03:42:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:42:37,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:37,818 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, 1] [2021-11-03 03:42:37,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-03 03:42:38,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:38,038 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash 210028573, now seen corresponding path program 1 times [2021-11-03 03:42:38,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:38,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242866444] [2021-11-03 03:42:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:38,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:38,040 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:38,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 03:42:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:38,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:42:38,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:39,127 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 03:42:39,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:39,595 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 03:42:39,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:39,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242866444] [2021-11-03 03:42:39,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242866444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:39,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:39,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 03:42:39,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371434826] [2021-11-03 03:42:39,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:39,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:39,598 INFO L87 Difference]: Start difference. First operand 43430 states and 78823 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:45,434 INFO L93 Difference]: Finished difference Result 63325 states and 115133 transitions. [2021-11-03 03:42:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:42:45,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 03:42:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:45,516 INFO L225 Difference]: With dead ends: 63325 [2021-11-03 03:42:45,516 INFO L226 Difference]: Without dead ends: 63308 [2021-11-03 03:42:45,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:42:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63308 states. [2021-11-03 03:42:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63308 to 49961. [2021-11-03 03:42:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49961 states, 49956 states have (on average 1.8166386420049643) internal successors, (90752), 49960 states have internal predecessors, (90752), 0 states have call successors, (0), 0 states 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 03:42:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49961 states to 49961 states and 90752 transitions. [2021-11-03 03:42:48,614 INFO L78 Accepts]: Start accepts. Automaton has 49961 states and 90752 transitions. Word has length 85 [2021-11-03 03:42:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:48,615 INFO L470 AbstractCegarLoop]: Abstraction has 49961 states and 90752 transitions. [2021-11-03 03:42:48,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:48,615 INFO L276 IsEmpty]: Start isEmpty. Operand 49961 states and 90752 transitions. [2021-11-03 03:42:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 03:42:48,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:48,620 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, 1, 1, 1] [2021-11-03 03:42:48,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:48,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:48,830 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -204233416, now seen corresponding path program 1 times [2021-11-03 03:42:48,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:48,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327554207] [2021-11-03 03:42:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:48,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:48,832 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:48,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 03:42:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:49,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:42:49,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:49,856 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 03:42:49,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:49,994 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 03:42:49,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:49,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327554207] [2021-11-03 03:42:49,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327554207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:49,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:49,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:42:49,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631226025] [2021-11-03 03:42:49,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:49,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:49,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:49,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:49,997 INFO L87 Difference]: Start difference. First operand 49961 states and 90752 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 03:42:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:52,911 INFO L93 Difference]: Finished difference Result 49978 states and 90769 transitions. [2021-11-03 03:42:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 87 [2021-11-03 03:42:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:52,985 INFO L225 Difference]: With dead ends: 49978 [2021-11-03 03:42:52,985 INFO L226 Difference]: Without dead ends: 49961 [2021-11-03 03:42:52,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 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 03:42:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49961 states. [2021-11-03 03:42:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49961 to 49961. [2021-11-03 03:42:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49961 states, 49956 states have (on average 1.8157378493073906) internal successors, (90707), 49960 states have internal predecessors, (90707), 0 states have call successors, (0), 0 states 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 03:42:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49961 states to 49961 states and 90707 transitions. [2021-11-03 03:42:56,084 INFO L78 Accepts]: Start accepts. Automaton has 49961 states and 90707 transitions. Word has length 87 [2021-11-03 03:42:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:56,085 INFO L470 AbstractCegarLoop]: Abstraction has 49961 states and 90707 transitions. [2021-11-03 03:42:56,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 03:42:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 49961 states and 90707 transitions. [2021-11-03 03:42:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 03:42:56,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:56,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:56,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:56,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,307 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:42:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash -724961551, now seen corresponding path program 1 times [2021-11-03 03:42:56,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:56,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397019712] [2021-11-03 03:42:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:56,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:56,310 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:56,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c3ed26-3198-449d-ac6d-d5065ca85687/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 03:42:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:57,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:42:57,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:57,524 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 03:42:57,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:57,865 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 03:42:57,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:57,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397019712] [2021-11-03 03:42:57,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397019712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:57,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:57,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:42:57,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083219603] [2021-11-03 03:42:57,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:57,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:57,867 INFO L87 Difference]: Start difference. First operand 49961 states and 90707 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)