./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.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_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/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_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/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_700fb83a-ab6f-48d9-b67b-544b60e39a53/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 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:16:18,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:18,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:18,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:18,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:18,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:18,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:18,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:18,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:18,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:18,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:18,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:18,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:18,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:18,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:18,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:18,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:18,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:18,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:18,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:18,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:18,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:18,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:18,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:18,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:18,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:18,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:18,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:18,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:18,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:18,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:18,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:18,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:18,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:18,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:18,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:18,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:18,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:18,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:18,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:18,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:18,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:16:18,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:18,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:18,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:18,298 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:18,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:18,299 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:18,299 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:16:18,299 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:18,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:18,300 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:16:18,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:16:18,301 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:18,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:16:18,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:16:18,302 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:16:18,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:18,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:18,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:16:18,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:18,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:18,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:18,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:18,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:18,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:18,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:18,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:18,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:18,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:18,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:18,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:18,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:18,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:18,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:18,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:18,308 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:16:18,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:16:18,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:18,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:18,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:18,309 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 [2021-11-03 05:16:18,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:18,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:18,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:18,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:18,604 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:18,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2021-11-03 05:16:18,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/a725c07e8/e427fab3acf84654942118941edb844e/FLAGa47d9e254 [2021-11-03 05:16:19,308 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:19,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2021-11-03 05:16:19,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/a725c07e8/e427fab3acf84654942118941edb844e/FLAGa47d9e254 [2021-11-03 05:16:19,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/a725c07e8/e427fab3acf84654942118941edb844e [2021-11-03 05:16:19,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:19,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:19,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:19,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:19,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:19,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:19" (1/1) ... [2021-11-03 05:16:19,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7b7808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:19, skipping insertion in model container [2021-11-03 05:16:19,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:19" (1/1) ... [2021-11-03 05:16:19,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:19,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:20,090 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2021-11-03 05:16:20,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:20,415 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:16:20,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@429cd99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:20, skipping insertion in model container [2021-11-03 05:16:20,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:20,417 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:16:20,419 INFO L168 Benchmark]: Toolchain (without parser) took 902.41 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.7 MB in the beginning and 90.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:20,421 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:16:20,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 899.96 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.5 MB in the beginning and 90.0 MB in the end (delta: -35.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:20,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 899.96 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.5 MB in the beginning and 90.0 MB in the end (delta: -35.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/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_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/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_700fb83a-ab6f-48d9-b67b-544b60e39a53/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 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:16:22,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:22,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:22,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:22,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:22,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:22,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:22,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:22,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:22,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:22,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:22,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:22,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:22,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:22,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:22,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:22,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:22,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:22,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:22,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:22,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:22,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:22,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:22,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:22,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:22,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:22,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:22,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:22,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:22,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:22,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:22,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:22,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:22,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:22,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:22,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:22,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:22,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:22,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:22,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:22,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:22,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:16:22,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:22,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:22,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:22,755 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:22,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:22,756 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:22,756 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:22,756 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:22,756 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:22,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:22,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:22,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:22,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:22,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:22,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:22,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:22,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:22,762 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:16:22,763 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:16:22,763 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:22,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:22,763 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:22,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:22,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:22,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:16:22,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:22,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:22,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:22,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:22,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:22,766 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:16:22,766 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:16:22,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:22,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:22,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:22,767 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 [2021-11-03 05:16:23,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:23,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:23,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:23,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:23,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:23,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2021-11-03 05:16:23,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/53a8b0828/c416ea8881f142ca83a8d024bb5ad8a7/FLAG67476f927 [2021-11-03 05:16:24,021 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:24,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2021-11-03 05:16:24,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/53a8b0828/c416ea8881f142ca83a8d024bb5ad8a7/FLAG67476f927 [2021-11-03 05:16:24,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/data/53a8b0828/c416ea8881f142ca83a8d024bb5ad8a7 [2021-11-03 05:16:24,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:24,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:24,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:24,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:24,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:24,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:24" (1/1) ... [2021-11-03 05:16:24,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ebdf68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:24, skipping insertion in model container [2021-11-03 05:16:24,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:24" (1/1) ... [2021-11-03 05:16:24,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:24,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:24,616 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2021-11-03 05:16:24,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:24,858 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:16:24,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:24,938 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2021-11-03 05:16:25,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:25,084 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:16:25,134 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_700fb83a-ab6f-48d9-b67b-544b60e39a53/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2021-11-03 05:16:25,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:25,244 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:16:25,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25 WrapperNode [2021-11-03 05:16:25,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:25,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:25,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:16:25,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:16:25,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:25,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:16:25,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:16:25,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:16:25,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:16:25,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:16:25,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:16:25,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:16:25,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (1/1) ... [2021-11-03 05:16:25,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:16:25,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:16:25,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:16:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:16:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:16:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:16:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:16:34,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:16:34,667 INFO L299 CfgBuilder]: Removed 661 assume(true) statements. [2021-11-03 05:16:34,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:34 BoogieIcfgContainer [2021-11-03 05:16:34,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:16:34,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:16:34,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:16:34,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:16:34,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:16:24" (1/3) ... [2021-11-03 05:16:34,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a4c35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:34, skipping insertion in model container [2021-11-03 05:16:34,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:25" (2/3) ... [2021-11-03 05:16:34,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a4c35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:34, skipping insertion in model container [2021-11-03 05:16:34,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:34" (3/3) ... [2021-11-03 05:16:34,684 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2021-11-03 05:16:34,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:16:34,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 05:16:34,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:16:34,773 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:16:34,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 05:16:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 2604 states, 2598 states have (on average 1.8826020015396459) internal successors, (4891), 2603 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:16:34,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:34,865 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 05:16:34,866 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 05:16:34,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:34,871 INFO L85 PathProgramCache]: Analyzing trace with hash 257781798, now seen corresponding path program 1 times [2021-11-03 05:16:34,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:34,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630449273] [2021-11-03 05:16:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:34,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:34,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:34,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:34,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:16:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:35,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:16:35,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:35,411 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 05:16:35,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:35,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:35,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630449273] [2021-11-03 05:16:35,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630449273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:35,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:35,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:16:35,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299282114] [2021-11-03 05:16:35,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:16:35,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:16:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:16:35,537 INFO L87 Difference]: Start difference. First operand has 2604 states, 2598 states have (on average 1.8826020015396459) internal successors, (4891), 2603 states have internal predecessors, (4891), 0 states have call successors, (0), 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 05:16:35,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:35,694 INFO L93 Difference]: Finished difference Result 2623 states and 4914 transitions. [2021-11-03 05:16:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:16:35,696 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 05:16:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:35,727 INFO L225 Difference]: With dead ends: 2623 [2021-11-03 05:16:35,727 INFO L226 Difference]: Without dead ends: 2600 [2021-11-03 05:16:35,732 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 05:16:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-11-03 05:16:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2600. [2021-11-03 05:16:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2595 states have (on average 1.8801541425818882) internal successors, (4879), 2599 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 4879 transitions. [2021-11-03 05:16:35,871 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 4879 transitions. Word has length 44 [2021-11-03 05:16:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:35,872 INFO L470 AbstractCegarLoop]: Abstraction has 2600 states and 4879 transitions. [2021-11-03 05:16:35,872 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 05:16:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 4879 transitions. [2021-11-03 05:16:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:16:35,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:35,877 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 05:16:35,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:36,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:36,090 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 05:16:36,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1566974091, now seen corresponding path program 1 times [2021-11-03 05:16:36,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:36,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214545887] [2021-11-03 05:16:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:36,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:36,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:36,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:16:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:36,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:36,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:36,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:36,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:36,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214545887] [2021-11-03 05:16:36,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214545887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:36,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:36,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:16:36,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507293346] [2021-11-03 05:16:36,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:36,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:36,743 INFO L87 Difference]: Start difference. First operand 2600 states and 4879 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 05:16:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:36,963 INFO L93 Difference]: Finished difference Result 5187 states and 9739 transitions. [2021-11-03 05:16:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:36,964 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 05:16:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:36,981 INFO L225 Difference]: With dead ends: 5187 [2021-11-03 05:16:36,981 INFO L226 Difference]: Without dead ends: 2600 [2021-11-03 05:16:36,987 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 05:16:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-11-03 05:16:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2600. [2021-11-03 05:16:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2595 states have (on average 1.8778420038535646) internal successors, (4873), 2599 states have internal predecessors, (4873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 4873 transitions. [2021-11-03 05:16:37,074 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 4873 transitions. Word has length 46 [2021-11-03 05:16:37,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:37,074 INFO L470 AbstractCegarLoop]: Abstraction has 2600 states and 4873 transitions. [2021-11-03 05:16:37,075 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 05:16:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 4873 transitions. [2021-11-03 05:16:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:16:37,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:37,078 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 05:16:37,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:37,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:37,299 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 05:16:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:37,300 INFO L85 PathProgramCache]: Analyzing trace with hash 47999, now seen corresponding path program 1 times [2021-11-03 05:16:37,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:37,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739771607] [2021-11-03 05:16:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:37,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:37,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:37,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:37,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:16:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:37,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:16:37,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:37,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:37,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:37,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739771607] [2021-11-03 05:16:37,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739771607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:37,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:37,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:16:37,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885028668] [2021-11-03 05:16:37,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:16:37,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:37,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:16:37,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:37,945 INFO L87 Difference]: Start difference. First operand 2600 states and 4873 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 05:16:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:38,184 INFO L93 Difference]: Finished difference Result 5151 states and 9662 transitions. [2021-11-03 05:16:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:38,184 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 05:16:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:38,202 INFO L225 Difference]: With dead ends: 5151 [2021-11-03 05:16:38,202 INFO L226 Difference]: Without dead ends: 2573 [2021-11-03 05:16:38,206 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 05:16:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-11-03 05:16:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2021-11-03 05:16:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2568 states have (on average 1.875778816199377) internal successors, (4817), 2572 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4817 transitions. [2021-11-03 05:16:38,321 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4817 transitions. Word has length 51 [2021-11-03 05:16:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:38,321 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 4817 transitions. [2021-11-03 05:16:38,322 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 05:16:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4817 transitions. [2021-11-03 05:16:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:16:38,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:38,325 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 05:16:38,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:38,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:38,538 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 05:16:38,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -311834335, now seen corresponding path program 1 times [2021-11-03 05:16:38,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:38,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907284377] [2021-11-03 05:16:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:38,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:38,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:38,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:38,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:16:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:38,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:38,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:39,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:39,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:39,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907284377] [2021-11-03 05:16:39,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907284377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:39,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:39,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:16:39,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918256664] [2021-11-03 05:16:39,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:39,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:39,201 INFO L87 Difference]: Start difference. First operand 2573 states and 4817 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:39,354 INFO L93 Difference]: Finished difference Result 5124 states and 9606 transitions. [2021-11-03 05:16:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:39,355 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 05:16:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:39,371 INFO L225 Difference]: With dead ends: 5124 [2021-11-03 05:16:39,372 INFO L226 Difference]: Without dead ends: 2573 [2021-11-03 05:16:39,375 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 05:16:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-11-03 05:16:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2021-11-03 05:16:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2568 states have (on average 1.8734423676012462) internal successors, (4811), 2572 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4811 transitions. [2021-11-03 05:16:39,478 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4811 transitions. Word has length 52 [2021-11-03 05:16:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:39,479 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 4811 transitions. [2021-11-03 05:16:39,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4811 transitions. [2021-11-03 05:16:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 05:16:39,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:39,482 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 05:16:39,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:39,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:39,696 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 05:16:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash 72012850, now seen corresponding path program 1 times [2021-11-03 05:16:39,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:39,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877441940] [2021-11-03 05:16:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:39,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:39,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:39,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:39,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:16:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:40,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:16:40,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:40,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:40,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877441940] [2021-11-03 05:16:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877441940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:40,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:16:40,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901098650] [2021-11-03 05:16:40,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:16:40,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:16:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:16:40,480 INFO L87 Difference]: Start difference. First operand 2573 states and 4811 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:40,701 INFO L93 Difference]: Finished difference Result 5118 states and 9589 transitions. [2021-11-03 05:16:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:16:40,702 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 05:16:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:40,718 INFO L225 Difference]: With dead ends: 5118 [2021-11-03 05:16:40,719 INFO L226 Difference]: Without dead ends: 2570 [2021-11-03 05:16:40,723 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 05:16:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-11-03 05:16:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2570. [2021-11-03 05:16:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2565 states have (on average 1.872514619883041) internal successors, (4803), 2569 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 4803 transitions. [2021-11-03 05:16:40,827 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 4803 transitions. Word has length 57 [2021-11-03 05:16:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:40,828 INFO L470 AbstractCegarLoop]: Abstraction has 2570 states and 4803 transitions. [2021-11-03 05:16:40,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 4803 transitions. [2021-11-03 05:16:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 05:16:40,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:40,831 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 05:16:40,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 05:16:41,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:41,047 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 05:16:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash 612874754, now seen corresponding path program 1 times [2021-11-03 05:16:41,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:41,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604399173] [2021-11-03 05:16:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:41,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:41,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:41,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:41,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:16:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:41,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:16:41,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:41,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:41,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:41,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604399173] [2021-11-03 05:16:41,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604399173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:41,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:41,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:16:41,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877451412] [2021-11-03 05:16:41,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:16:41,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:16:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:41,894 INFO L87 Difference]: Start difference. First operand 2570 states and 4803 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 05:16:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:43,562 INFO L93 Difference]: Finished difference Result 9436 states and 17691 transitions. [2021-11-03 05:16:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:16:43,563 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 05:16:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:43,610 INFO L225 Difference]: With dead ends: 9436 [2021-11-03 05:16:43,610 INFO L226 Difference]: Without dead ends: 6897 [2021-11-03 05:16:43,615 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 05:16:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6897 states. [2021-11-03 05:16:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6897 to 2570. [2021-11-03 05:16:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2565 states have (on average 1.832748538011696) internal successors, (4701), 2569 states have internal predecessors, (4701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 4701 transitions. [2021-11-03 05:16:43,805 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 4701 transitions. Word has length 58 [2021-11-03 05:16:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:43,805 INFO L470 AbstractCegarLoop]: Abstraction has 2570 states and 4701 transitions. [2021-11-03 05:16:43,814 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 05:16:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 4701 transitions. [2021-11-03 05:16:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 05:16:43,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:43,825 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 05:16:43,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:44,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:44,044 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 05:16:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1261522158, now seen corresponding path program 1 times [2021-11-03 05:16:44,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:44,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829031810] [2021-11-03 05:16:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:44,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:44,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:44,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:16:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:44,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:16:44,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:44,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:44,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:44,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829031810] [2021-11-03 05:16:44,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829031810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:44,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:44,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:16:44,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850728050] [2021-11-03 05:16:44,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:16:44,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:16:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:44,921 INFO L87 Difference]: Start difference. First operand 2570 states and 4701 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 05:16:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:45,987 INFO L93 Difference]: Finished difference Result 7229 states and 13350 transitions. [2021-11-03 05:16:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:16:45,988 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 05:16:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:46,028 INFO L225 Difference]: With dead ends: 7229 [2021-11-03 05:16:46,029 INFO L226 Difference]: Without dead ends: 4708 [2021-11-03 05:16:46,034 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 05:16:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-11-03 05:16:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 2536. [2021-11-03 05:16:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2531 states have (on average 1.8328723824575266) internal successors, (4639), 2535 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4639 transitions. [2021-11-03 05:16:46,206 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4639 transitions. Word has length 66 [2021-11-03 05:16:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:46,207 INFO L470 AbstractCegarLoop]: Abstraction has 2536 states and 4639 transitions. [2021-11-03 05:16:46,207 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 05:16:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4639 transitions. [2021-11-03 05:16:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 05:16:46,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:46,210 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 05:16:46,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:46,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:46,424 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 05:16:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1622096114, now seen corresponding path program 1 times [2021-11-03 05:16:46,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:46,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354238808] [2021-11-03 05:16:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:46,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:46,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:46,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:46,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:16:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:46,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:16:46,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:47,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:47,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:47,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354238808] [2021-11-03 05:16:47,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354238808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:47,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:47,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:16:47,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560100270] [2021-11-03 05:16:47,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:16:47,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:16:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:47,308 INFO L87 Difference]: Start difference. First operand 2536 states and 4639 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 05:16:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:48,815 INFO L93 Difference]: Finished difference Result 10050 states and 18509 transitions. [2021-11-03 05:16:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:16:48,816 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 05:16:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:48,834 INFO L225 Difference]: With dead ends: 10050 [2021-11-03 05:16:48,835 INFO L226 Difference]: Without dead ends: 7562 [2021-11-03 05:16:48,839 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 05:16:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2021-11-03 05:16:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 2540. [2021-11-03 05:16:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2535 states have (on average 1.8315581854043392) internal successors, (4643), 2539 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 4643 transitions. [2021-11-03 05:16:49,005 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 4643 transitions. Word has length 68 [2021-11-03 05:16:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:49,005 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 4643 transitions. [2021-11-03 05:16:49,006 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 05:16:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 4643 transitions. [2021-11-03 05:16:49,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 05:16:49,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:49,009 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 05:16:49,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:49,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:49,224 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 05:16:49,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1365563719, now seen corresponding path program 1 times [2021-11-03 05:16:49,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:49,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816434752] [2021-11-03 05:16:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:49,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:49,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:49,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:49,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:16:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:49,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:16:49,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:49,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:50,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:50,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816434752] [2021-11-03 05:16:50,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816434752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:50,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:50,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:16:50,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918785371] [2021-11-03 05:16:50,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:16:50,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:16:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:50,043 INFO L87 Difference]: Start difference. First operand 2540 states and 4643 transitions. Second operand has 5 states, 5 states have (on average 14.2) 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 05:16:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:57,936 INFO L93 Difference]: Finished difference Result 6319 states and 11511 transitions. [2021-11-03 05:16:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:16:57,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) 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 69 [2021-11-03 05:16:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:57,948 INFO L225 Difference]: With dead ends: 6319 [2021-11-03 05:16:57,948 INFO L226 Difference]: Without dead ends: 4849 [2021-11-03 05:16:57,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2021-11-03 05:16:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 4716. [2021-11-03 05:16:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 4711 states have (on average 1.8384631713012098) internal successors, (8661), 4715 states have internal predecessors, (8661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 8661 transitions. [2021-11-03 05:16:58,263 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 8661 transitions. Word has length 69 [2021-11-03 05:16:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:58,264 INFO L470 AbstractCegarLoop]: Abstraction has 4716 states and 8661 transitions. [2021-11-03 05:16:58,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) 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 05:16:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 8661 transitions. [2021-11-03 05:16:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 05:16:58,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:58,270 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 05:16:58,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:58,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:58,485 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 05:16:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1918286327, now seen corresponding path program 1 times [2021-11-03 05:16:58,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:58,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229452617] [2021-11-03 05:16:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:58,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:58,487 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:58,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:16:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:59,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:16:59,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:59,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:59,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:59,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229452617] [2021-11-03 05:16:59,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229452617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:59,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:59,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:16:59,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511929449] [2021-11-03 05:16:59,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:59,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:59,448 INFO L87 Difference]: Start difference. First operand 4716 states and 8661 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 05:17:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:00,787 INFO L93 Difference]: Finished difference Result 8479 states and 15508 transitions. [2021-11-03 05:17:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:17:00,787 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 05:17:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:00,797 INFO L225 Difference]: With dead ends: 8479 [2021-11-03 05:17:00,797 INFO L226 Difference]: Without dead ends: 4836 [2021-11-03 05:17:00,803 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 05:17:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-11-03 05:17:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4627. [2021-11-03 05:17:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4622 states have (on average 1.822371267849416) internal successors, (8423), 4626 states have internal predecessors, (8423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 8423 transitions. [2021-11-03 05:17:01,063 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 8423 transitions. Word has length 69 [2021-11-03 05:17:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:01,064 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 8423 transitions. [2021-11-03 05:17:01,064 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 05:17:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 8423 transitions. [2021-11-03 05:17:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 05:17:01,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:01,066 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 05:17:01,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:01,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:01,281 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 05:17:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:01,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1985308031, now seen corresponding path program 1 times [2021-11-03 05:17:01,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:01,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833758329] [2021-11-03 05:17:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:01,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:01,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:01,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:17:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:01,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:01,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:02,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:02,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:02,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833758329] [2021-11-03 05:17:02,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833758329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:02,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:02,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:02,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797948235] [2021-11-03 05:17:02,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:02,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:02,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:02,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:02,229 INFO L87 Difference]: Start difference. First operand 4627 states and 8423 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 05:17:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:03,520 INFO L93 Difference]: Finished difference Result 32924 states and 60253 transitions. [2021-11-03 05:17:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:17:03,520 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 05:17:03,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:03,574 INFO L225 Difference]: With dead ends: 32924 [2021-11-03 05:17:03,574 INFO L226 Difference]: Without dead ends: 28341 [2021-11-03 05:17:03,585 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 05:17:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28341 states. [2021-11-03 05:17:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28341 to 8644. [2021-11-03 05:17:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8644 states, 8639 states have (on average 1.8309989582127562) internal successors, (15818), 8643 states have internal predecessors, (15818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8644 states to 8644 states and 15818 transitions. [2021-11-03 05:17:04,245 INFO L78 Accepts]: Start accepts. Automaton has 8644 states and 15818 transitions. Word has length 71 [2021-11-03 05:17:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:04,246 INFO L470 AbstractCegarLoop]: Abstraction has 8644 states and 15818 transitions. [2021-11-03 05:17:04,246 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 05:17:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8644 states and 15818 transitions. [2021-11-03 05:17:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 05:17:04,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:04,249 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 05:17:04,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 05:17:04,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:04,463 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 05:17:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:04,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1710548417, now seen corresponding path program 1 times [2021-11-03 05:17:04,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:04,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879061459] [2021-11-03 05:17:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:04,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:04,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:04,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:04,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:17:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:05,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:05,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:05,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:05,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:05,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879061459] [2021-11-03 05:17:05,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879061459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:05,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:05,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:17:05,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192994568] [2021-11-03 05:17:05,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:05,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:05,421 INFO L87 Difference]: Start difference. First operand 8644 states and 15818 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 05:17:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:06,380 INFO L93 Difference]: Finished difference Result 16225 states and 29593 transitions. [2021-11-03 05:17:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:17:06,380 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 05:17:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:06,395 INFO L225 Difference]: With dead ends: 16225 [2021-11-03 05:17:06,395 INFO L226 Difference]: Without dead ends: 11257 [2021-11-03 05:17:06,402 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 05:17:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2021-11-03 05:17:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 8630. [2021-11-03 05:17:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8630 states, 8625 states have (on average 1.8307246376811595) internal successors, (15790), 8629 states have internal predecessors, (15790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 15790 transitions. [2021-11-03 05:17:06,921 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 15790 transitions. Word has length 71 [2021-11-03 05:17:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:06,922 INFO L470 AbstractCegarLoop]: Abstraction has 8630 states and 15790 transitions. [2021-11-03 05:17:06,922 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 05:17:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 15790 transitions. [2021-11-03 05:17:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:17:06,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:06,924 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 05:17:06,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:07,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:07,139 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 05:17:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1427136123, now seen corresponding path program 1 times [2021-11-03 05:17:07,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:07,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340710466] [2021-11-03 05:17:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:07,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:07,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:17:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:07,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:17:07,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:07,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:08,209 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 05:17:08,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:08,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340710466] [2021-11-03 05:17:08,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340710466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:08,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:08,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:08,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314318587] [2021-11-03 05:17:08,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:08,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:08,212 INFO L87 Difference]: Start difference. First operand 8630 states and 15790 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 05:17:09,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:09,544 INFO L93 Difference]: Finished difference Result 34048 states and 62627 transitions. [2021-11-03 05:17:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:17:09,545 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 05:17:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:09,581 INFO L225 Difference]: With dead ends: 34048 [2021-11-03 05:17:09,581 INFO L226 Difference]: Without dead ends: 29090 [2021-11-03 05:17:09,593 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 05:17:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29090 states. [2021-11-03 05:17:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29090 to 13309. [2021-11-03 05:17:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13309 states, 13304 states have (on average 1.8278713168971739) internal successors, (24318), 13308 states have internal predecessors, (24318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13309 states to 13309 states and 24318 transitions. [2021-11-03 05:17:10,530 INFO L78 Accepts]: Start accepts. Automaton has 13309 states and 24318 transitions. Word has length 73 [2021-11-03 05:17:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:10,530 INFO L470 AbstractCegarLoop]: Abstraction has 13309 states and 24318 transitions. [2021-11-03 05:17:10,530 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 05:17:10,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13309 states and 24318 transitions. [2021-11-03 05:17:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 05:17:10,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:10,534 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 05:17:10,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:10,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,749 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 05:17:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2017223191, now seen corresponding path program 1 times [2021-11-03 05:17:10,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:10,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181309425] [2021-11-03 05:17:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:10,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:10,751 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:10,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:17:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:11,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:11,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:11,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:11,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:11,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181309425] [2021-11-03 05:17:11,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181309425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:11,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:11,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:17:11,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709665817] [2021-11-03 05:17:11,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:11,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:11,925 INFO L87 Difference]: Start difference. First operand 13309 states and 24318 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 05:17:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:15,696 INFO L93 Difference]: Finished difference Result 72302 states and 133015 transitions. [2021-11-03 05:17:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:17:15,696 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 05:17:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:15,771 INFO L225 Difference]: With dead ends: 72302 [2021-11-03 05:17:15,771 INFO L226 Difference]: Without dead ends: 62665 [2021-11-03 05:17:15,785 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 05:17:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62665 states. [2021-11-03 05:17:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62665 to 21397. [2021-11-03 05:17:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21397 states, 21392 states have (on average 1.8352187733732237) internal successors, (39259), 21396 states have internal predecessors, (39259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21397 states to 21397 states and 39259 transitions. [2021-11-03 05:17:17,096 INFO L78 Accepts]: Start accepts. Automaton has 21397 states and 39259 transitions. Word has length 75 [2021-11-03 05:17:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:17,096 INFO L470 AbstractCegarLoop]: Abstraction has 21397 states and 39259 transitions. [2021-11-03 05:17:17,096 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 05:17:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21397 states and 39259 transitions. [2021-11-03 05:17:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 05:17:17,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:17,100 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 05:17:17,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 05:17:17,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:17,314 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 05:17:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash -575052500, now seen corresponding path program 1 times [2021-11-03 05:17:17,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:17,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723979308] [2021-11-03 05:17:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:17,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:17,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:17,316 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:17,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:17:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:17,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:17,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:18,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:18,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:18,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723979308] [2021-11-03 05:17:18,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723979308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:18,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:18,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:17:18,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412638052] [2021-11-03 05:17:18,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:18,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:18,348 INFO L87 Difference]: Start difference. First operand 21397 states and 39259 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 05:17:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:19,346 INFO L93 Difference]: Finished difference Result 39254 states and 71916 transitions. [2021-11-03 05:17:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:19,346 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 05:17:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:19,370 INFO L225 Difference]: With dead ends: 39254 [2021-11-03 05:17:19,370 INFO L226 Difference]: Without dead ends: 21412 [2021-11-03 05:17:19,388 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 05:17:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21412 states. [2021-11-03 05:17:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21412 to 21397. [2021-11-03 05:17:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21397 states, 21392 states have (on average 1.8285807778608825) internal successors, (39117), 21396 states have internal predecessors, (39117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21397 states to 21397 states and 39117 transitions. [2021-11-03 05:17:20,806 INFO L78 Accepts]: Start accepts. Automaton has 21397 states and 39117 transitions. Word has length 82 [2021-11-03 05:17:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:20,806 INFO L470 AbstractCegarLoop]: Abstraction has 21397 states and 39117 transitions. [2021-11-03 05:17:20,807 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 05:17:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 21397 states and 39117 transitions. [2021-11-03 05:17:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 05:17:20,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:20,810 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 05:17:20,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:21,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:21,024 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 05:17:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 325156380, now seen corresponding path program 1 times [2021-11-03 05:17:21,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:21,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92095976] [2021-11-03 05:17:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:21,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:21,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:21,027 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:21,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:17:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:21,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:21,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:22,065 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 05:17:22,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:22,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:22,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92095976] [2021-11-03 05:17:22,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92095976] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:22,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:22,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 05:17:22,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298746618] [2021-11-03 05:17:22,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:17:22,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:17:22,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:17:22,318 INFO L87 Difference]: Start difference. First operand 21397 states and 39117 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 05:17:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:32,236 INFO L93 Difference]: Finished difference Result 129482 states and 235185 transitions. [2021-11-03 05:17:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 05:17:32,245 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 05:17:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:32,554 INFO L225 Difference]: With dead ends: 129482 [2021-11-03 05:17:32,555 INFO L226 Difference]: Without dead ends: 109757 [2021-11-03 05:17:32,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 05:17:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109757 states. [2021-11-03 05:17:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109757 to 46837. [2021-11-03 05:17:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46837 states, 46832 states have (on average 1.8279808677827127) internal successors, (85608), 46836 states have internal predecessors, (85608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46837 states to 46837 states and 85608 transitions. [2021-11-03 05:17:35,624 INFO L78 Accepts]: Start accepts. Automaton has 46837 states and 85608 transitions. Word has length 83 [2021-11-03 05:17:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:35,624 INFO L470 AbstractCegarLoop]: Abstraction has 46837 states and 85608 transitions. [2021-11-03 05:17:35,625 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 05:17:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 46837 states and 85608 transitions. [2021-11-03 05:17:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:17:35,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:35,629 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 05:17:35,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-03 05:17:35,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:35,865 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 05:17:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:35,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1109748357, now seen corresponding path program 1 times [2021-11-03 05:17:35,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:35,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369569495] [2021-11-03 05:17:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:35,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:35,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:35,867 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:35,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700fb83a-ab6f-48d9-b67b-544b60e39a53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:17:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:36,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:36,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:37,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:37,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369569495] [2021-11-03 05:17:37,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369569495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:37,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:37,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:17:37,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036585255] [2021-11-03 05:17:37,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:37,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:37,055 INFO L87 Difference]: Start difference. First operand 46837 states and 85608 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 05:17:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:41,937 INFO L93 Difference]: Finished difference Result 138153 states and 252645 transitions. [2021-11-03 05:17:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:41,937 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 05:17:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:42,067 INFO L225 Difference]: With dead ends: 138153 [2021-11-03 05:17:42,067 INFO L226 Difference]: Without dead ends: 93052 [2021-11-03 05:17:42,245 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 05:17:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93052 states.