./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8 --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 e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:29,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:29,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:29,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:29,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:29,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:29,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:29,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:29,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:29,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:29,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:29,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:29,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:29,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:29,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:29,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:29,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:29,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:29,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:29,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:29,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:29,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:29,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:29,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:29,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:29,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:29,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:29,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:29,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:29,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:29,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:29,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:29,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:29,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:29,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:29,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:29,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:29,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:29,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:29,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:29,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:29,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:23:29,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:29,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:29,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:29,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:29,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:29,406 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:29,406 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:23:29,407 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:29,407 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:29,407 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:23:29,408 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:23:29,408 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:29,409 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:23:29,409 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:23:29,409 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:23:29,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:29,410 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:29,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:29,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:29,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:29,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:23:29,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:29,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:23:29,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:29,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:29,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:23:29,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:29,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:23:29,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:29,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:29,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:29,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:29,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:29,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:23:29,414 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:23:29,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:23:29,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:23:29,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:29,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:29,415 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b [2021-11-07 01:23:29,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:29,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:29,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:29,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:29,681 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:29,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2021-11-07 01:23:29,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/13861c5a7/389a56b2023a4ee097ced1d0d2125f47/FLAGed560ec95 [2021-11-07 01:23:30,422 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:30,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2021-11-07 01:23:30,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/13861c5a7/389a56b2023a4ee097ced1d0d2125f47/FLAGed560ec95 [2021-11-07 01:23:30,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/13861c5a7/389a56b2023a4ee097ced1d0d2125f47 [2021-11-07 01:23:30,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:30,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:30,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:30,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:30,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:30,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:30" (1/1) ... [2021-11-07 01:23:30,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542509d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:30, skipping insertion in model container [2021-11-07 01:23:30,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:30" (1/1) ... [2021-11-07 01:23:30,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:30,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:31,261 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2021-11-07 01:23:31,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:31,392 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) [2021-11-07 01:23:31,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@514854d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:31, skipping insertion in model container [2021-11-07 01:23:31,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:31,393 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:23:31,396 INFO L168 Benchmark]: Toolchain (without parser) took 768.09 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 66.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:31,397 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:31,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.29 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 66.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:31,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 761.29 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 66.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1797]: 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8 --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 e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:33,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:33,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:33,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:33,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:33,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:33,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:33,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:33,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:33,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:33,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:33,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:33,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:33,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:33,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:33,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:33,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:33,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:33,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:33,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:33,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:33,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:33,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:33,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:33,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:33,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:33,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:33,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:33,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:33,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:33,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:33,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:33,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:33,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:33,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:33,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:33,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:33,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:33,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:33,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:33,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:33,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:23:33,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:33,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:33,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:33,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:33,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:33,720 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:33,721 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:33,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:33,722 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:33,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:33,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:33,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:33,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:33,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:23:33,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:33,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:23:33,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:33,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:23:33,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:23:33,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:33,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:23:33,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:33,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:23:33,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:33,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:23:33,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:33,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:33,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:33,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:33,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:23:33,733 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:23:33,733 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:33,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:23:33,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:33,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:33,734 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6954a366a92a56976ad3f15dd01067d582436273e28a74386bd548c596ad28b [2021-11-07 01:23:34,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:34,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:34,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:34,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:34,164 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:34,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2021-11-07 01:23:34,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/a58f034f7/b0f1b8938e8949398a283210002854cd/FLAG40a05c564 [2021-11-07 01:23:34,955 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:34,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c [2021-11-07 01:23:34,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/a58f034f7/b0f1b8938e8949398a283210002854cd/FLAG40a05c564 [2021-11-07 01:23:35,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/data/a58f034f7/b0f1b8938e8949398a283210002854cd [2021-11-07 01:23:35,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:35,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:35,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:35,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:35,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:35,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:35" (1/1) ... [2021-11-07 01:23:35,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6019f233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:35, skipping insertion in model container [2021-11-07 01:23:35,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:35" (1/1) ... [2021-11-07 01:23:35,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:35,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:35,791 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2021-11-07 01:23:35,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:35,924 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:23:35,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:36,025 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2021-11-07 01:23:36,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:36,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:23:36,159 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_1bc0ee63-f69e-4395-8119-7aa3ad929646/sv-benchmarks/c/product-lines/email_spec7_product35.cil.c[48298,48311] [2021-11-07 01:23:36,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:36,256 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:23:36,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36 WrapperNode [2021-11-07 01:23:36,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:36,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:36,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:23:36,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:23:36,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:36,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:23:36,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:23:36,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:23:36,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:23:36,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:23:36,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:23:36,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:23:36,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (1/1) ... [2021-11-07 01:23:36,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:36,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:23:36,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:23:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:23:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:23:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:23:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:23:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:23:43,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:23:43,587 INFO L299 CfgBuilder]: Removed 937 assume(true) statements. [2021-11-07 01:23:43,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:43 BoogieIcfgContainer [2021-11-07 01:23:43,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:23:43,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:23:43,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:23:43,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:23:43,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:35" (1/3) ... [2021-11-07 01:23:43,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5cbdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:43, skipping insertion in model container [2021-11-07 01:23:43,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:36" (2/3) ... [2021-11-07 01:23:43,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5cbdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:43, skipping insertion in model container [2021-11-07 01:23:43,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:43" (3/3) ... [2021-11-07 01:23:43,600 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product35.cil.c [2021-11-07 01:23:43,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:23:43,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:23:43,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:23:43,668 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 [2021-11-07 01:23:43,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:23:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 1330 states, 1323 states have (on average 1.7165532879818595) internal successors, (2271), 1329 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:23:43,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:43,732 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] [2021-11-07 01:23:43,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash -994186242, now seen corresponding path program 1 times [2021-11-07 01:23:43,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:43,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120874839] [2021-11-07 01:23:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:43,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:43,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:43,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:43,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:23:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:44,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:23:44,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:44,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:44,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:44,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120874839] [2021-11-07 01:23:44,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120874839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:44,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:44,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:23:44,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304543158] [2021-11-07 01:23:44,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:23:44,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:23:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:23:44,649 INFO L87 Difference]: Start difference. First operand has 1330 states, 1323 states have (on average 1.7165532879818595) internal successors, (2271), 1329 states have internal predecessors, (2271), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:44,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:44,795 INFO L93 Difference]: Finished difference Result 2371 states and 4012 transitions. [2021-11-07 01:23:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:23:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:23:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:44,825 INFO L225 Difference]: With dead ends: 2371 [2021-11-07 01:23:44,826 INFO L226 Difference]: Without dead ends: 1142 [2021-11-07 01:23:44,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:23:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-11-07 01:23:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2021-11-07 01:23:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1136 states have (on average 1.7200704225352113) internal successors, (1954), 1141 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1954 transitions. [2021-11-07 01:23:44,970 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1954 transitions. Word has length 55 [2021-11-07 01:23:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:44,971 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1954 transitions. [2021-11-07 01:23:44,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1954 transitions. [2021-11-07 01:23:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:23:44,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:44,977 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] [2021-11-07 01:23:44,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:45,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:45,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1582704435, now seen corresponding path program 1 times [2021-11-07 01:23:45,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:45,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935833499] [2021-11-07 01:23:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:45,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:45,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:45,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:23:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:45,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:23:45,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:45,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:46,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:46,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935833499] [2021-11-07 01:23:46,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935833499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:46,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:46,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:23:46,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195748656] [2021-11-07 01:23:46,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:46,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:46,095 INFO L87 Difference]: Start difference. First operand 1142 states and 1954 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:46,316 INFO L93 Difference]: Finished difference Result 3396 states and 5814 transitions. [2021-11-07 01:23:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:46,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:23:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:46,338 INFO L225 Difference]: With dead ends: 3396 [2021-11-07 01:23:46,338 INFO L226 Difference]: Without dead ends: 2269 [2021-11-07 01:23:46,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:46,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-11-07 01:23:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1141. [2021-11-07 01:23:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1135 states have (on average 1.717180616740088) internal successors, (1949), 1140 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1949 transitions. [2021-11-07 01:23:46,424 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1949 transitions. Word has length 56 [2021-11-07 01:23:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:46,424 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1949 transitions. [2021-11-07 01:23:46,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1949 transitions. [2021-11-07 01:23:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:23:46,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:46,428 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] [2021-11-07 01:23:46,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:46,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:46,646 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash -791280371, now seen corresponding path program 1 times [2021-11-07 01:23:46,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:46,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275250210] [2021-11-07 01:23:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:46,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:46,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:46,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:23:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:47,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:23:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:47,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:47,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:47,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275250210] [2021-11-07 01:23:47,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275250210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:47,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:47,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:23:47,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594859921] [2021-11-07 01:23:47,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:47,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:47,548 INFO L87 Difference]: Start difference. First operand 1141 states and 1949 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:47,973 INFO L93 Difference]: Finished difference Result 4481 states and 7658 transitions. [2021-11-07 01:23:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:23:47,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2021-11-07 01:23:47,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:47,995 INFO L225 Difference]: With dead ends: 4481 [2021-11-07 01:23:47,995 INFO L226 Difference]: Without dead ends: 3358 [2021-11-07 01:23:47,997 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 [2021-11-07 01:23:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-11-07 01:23:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 1140. [2021-11-07 01:23:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1134 states have (on average 1.715167548500882) internal successors, (1945), 1139 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1945 transitions. [2021-11-07 01:23:48,099 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1945 transitions. Word has length 58 [2021-11-07 01:23:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:48,099 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1945 transitions. [2021-11-07 01:23:48,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1945 transitions. [2021-11-07 01:23:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:23:48,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:48,103 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] [2021-11-07 01:23:48,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:48,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash -793266662, now seen corresponding path program 1 times [2021-11-07 01:23:48,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:48,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145246636] [2021-11-07 01:23:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:48,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:48,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:48,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:48,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:23:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:48,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:49,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:49,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145246636] [2021-11-07 01:23:49,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145246636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:49,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:49,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:23:49,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117591987] [2021-11-07 01:23:49,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:49,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:49,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:49,166 INFO L87 Difference]: Start difference. First operand 1140 states and 1945 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:49,302 INFO L93 Difference]: Finished difference Result 2277 states and 3887 transitions. [2021-11-07 01:23:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:49,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:23:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:49,310 INFO L225 Difference]: With dead ends: 2277 [2021-11-07 01:23:49,311 INFO L226 Difference]: Without dead ends: 1145 [2021-11-07 01:23:49,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-07 01:23:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1140. [2021-11-07 01:23:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1134 states have (on average 1.7125220458553791) internal successors, (1942), 1139 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1942 transitions. [2021-11-07 01:23:49,397 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1942 transitions. Word has length 59 [2021-11-07 01:23:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:49,398 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1942 transitions. [2021-11-07 01:23:49,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1942 transitions. [2021-11-07 01:23:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:23:49,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:49,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:49,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:49,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:49,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash 675542309, now seen corresponding path program 1 times [2021-11-07 01:23:49,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:49,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281668381] [2021-11-07 01:23:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:49,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:49,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:49,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:49,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:23:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:50,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:23:50,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:50,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:50,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:50,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281668381] [2021-11-07 01:23:50,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281668381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:50,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:50,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:23:50,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210393939] [2021-11-07 01:23:50,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:50,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:50,433 INFO L87 Difference]: Start difference. First operand 1140 states and 1942 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2021-11-07 01:23:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:50,880 INFO L93 Difference]: Finished difference Result 4468 states and 7634 transitions. [2021-11-07 01:23:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:23:50,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 60 [2021-11-07 01:23:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:50,902 INFO L225 Difference]: With dead ends: 4468 [2021-11-07 01:23:50,902 INFO L226 Difference]: Without dead ends: 3354 [2021-11-07 01:23:50,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:23:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-11-07 01:23:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 1140. [2021-11-07 01:23:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1134 states have (on average 1.7098765432098766) internal successors, (1939), 1139 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1939 transitions. [2021-11-07 01:23:51,049 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1939 transitions. Word has length 60 [2021-11-07 01:23:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:51,049 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1939 transitions. [2021-11-07 01:23:51,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2021-11-07 01:23:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1939 transitions. [2021-11-07 01:23:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:23:51,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:51,052 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] [2021-11-07 01:23:51,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:51,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:51,266 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash -533863478, now seen corresponding path program 1 times [2021-11-07 01:23:51,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:51,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010567569] [2021-11-07 01:23:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:51,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:51,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:51,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:51,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:23:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:51,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:51,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:51,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:52,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:52,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010567569] [2021-11-07 01:23:52,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010567569] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:52,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:52,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:23:52,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080145676] [2021-11-07 01:23:52,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:52,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:52,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:52,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:52,089 INFO L87 Difference]: Start difference. First operand 1140 states and 1939 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:52,287 INFO L93 Difference]: Finished difference Result 3107 states and 5275 transitions. [2021-11-07 01:23:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 62 [2021-11-07 01:23:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:52,302 INFO L225 Difference]: With dead ends: 3107 [2021-11-07 01:23:52,302 INFO L226 Difference]: Without dead ends: 2254 [2021-11-07 01:23:52,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:52,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2021-11-07 01:23:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1401. [2021-11-07 01:23:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1395 states have (on average 1.7340501792114695) internal successors, (2419), 1400 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2419 transitions. [2021-11-07 01:23:52,422 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2419 transitions. Word has length 62 [2021-11-07 01:23:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:52,422 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2419 transitions. [2021-11-07 01:23:52,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2419 transitions. [2021-11-07 01:23:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:23:52,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:52,425 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:52,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:52,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:52,640 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1150899079, now seen corresponding path program 1 times [2021-11-07 01:23:52,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:52,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535911859] [2021-11-07 01:23:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:52,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:52,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:52,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:52,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:23:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:53,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:53,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:53,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:53,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535911859] [2021-11-07 01:23:53,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535911859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:53,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:53,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:53,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467318898] [2021-11-07 01:23:53,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:53,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:53,540 INFO L87 Difference]: Start difference. First operand 1401 states and 2419 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:53,769 INFO L93 Difference]: Finished difference Result 3780 states and 6516 transitions. [2021-11-07 01:23:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:23:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:53,785 INFO L225 Difference]: With dead ends: 3780 [2021-11-07 01:23:53,786 INFO L226 Difference]: Without dead ends: 2463 [2021-11-07 01:23:53,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-11-07 01:23:53,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1610. [2021-11-07 01:23:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1604 states have (on average 1.7468827930174564) internal successors, (2802), 1609 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2802 transitions. [2021-11-07 01:23:53,922 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2802 transitions. Word has length 74 [2021-11-07 01:23:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:53,924 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2802 transitions. [2021-11-07 01:23:53,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2802 transitions. [2021-11-07 01:23:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:23:53,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:53,927 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] [2021-11-07 01:23:53,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:54,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:54,142 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2022883130, now seen corresponding path program 1 times [2021-11-07 01:23:54,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:54,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162367301] [2021-11-07 01:23:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:54,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:54,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:54,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:23:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:54,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:54,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:55,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:55,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162367301] [2021-11-07 01:23:55,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162367301] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:55,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:55,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:55,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268377434] [2021-11-07 01:23:55,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:55,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:55,104 INFO L87 Difference]: Start difference. First operand 1610 states and 2802 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:55,346 INFO L93 Difference]: Finished difference Result 4439 states and 7730 transitions. [2021-11-07 01:23:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2021-11-07 01:23:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:55,365 INFO L225 Difference]: With dead ends: 4439 [2021-11-07 01:23:55,365 INFO L226 Difference]: Without dead ends: 2921 [2021-11-07 01:23:55,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-11-07 01:23:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2068. [2021-11-07 01:23:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2062 states have (on average 1.76721629485936) internal successors, (3644), 2067 states have internal predecessors, (3644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3644 transitions. [2021-11-07 01:23:55,537 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3644 transitions. Word has length 75 [2021-11-07 01:23:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:55,538 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 3644 transitions. [2021-11-07 01:23:55,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3644 transitions. [2021-11-07 01:23:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:23:55,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:55,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:55,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:55,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:55,761 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1730557835, now seen corresponding path program 1 times [2021-11-07 01:23:55,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:55,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225287854] [2021-11-07 01:23:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:55,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:55,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:55,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:23:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:56,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:56,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:56,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:56,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:56,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225287854] [2021-11-07 01:23:56,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225287854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:56,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:56,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:56,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775985518] [2021-11-07 01:23:56,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:56,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:56,759 INFO L87 Difference]: Start difference. First operand 2068 states and 3644 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:57,032 INFO L93 Difference]: Finished difference Result 5793 states and 10225 transitions. [2021-11-07 01:23:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:57,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 01:23:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:57,079 INFO L225 Difference]: With dead ends: 5793 [2021-11-07 01:23:57,079 INFO L226 Difference]: Without dead ends: 3825 [2021-11-07 01:23:57,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2021-11-07 01:23:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 2972. [2021-11-07 01:23:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2966 states have (on average 1.789278489548213) internal successors, (5307), 2971 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5307 transitions. [2021-11-07 01:23:57,304 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5307 transitions. Word has length 76 [2021-11-07 01:23:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:57,306 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 5307 transitions. [2021-11-07 01:23:57,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5307 transitions. [2021-11-07 01:23:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:23:57,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:57,312 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] [2021-11-07 01:23:57,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:57,527 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -247043573, now seen corresponding path program 1 times [2021-11-07 01:23:57,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:57,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659623006] [2021-11-07 01:23:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:57,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:57,529 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:57,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:23:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:58,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:58,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:58,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:58,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:58,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659623006] [2021-11-07 01:23:58,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659623006] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:58,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:58,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:23:58,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867644905] [2021-11-07 01:23:58,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:58,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:58,563 INFO L87 Difference]: Start difference. First operand 2972 states and 5307 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:58,893 INFO L93 Difference]: Finished difference Result 8241 states and 14733 transitions. [2021-11-07 01:23:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:58,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 01:23:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:58,909 INFO L225 Difference]: With dead ends: 8241 [2021-11-07 01:23:58,910 INFO L226 Difference]: Without dead ends: 5403 [2021-11-07 01:23:58,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:23:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2021-11-07 01:23:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 4550. [2021-11-07 01:23:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4544 states have (on average 1.806338028169014) internal successors, (8208), 4549 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 8208 transitions. [2021-11-07 01:23:59,254 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 8208 transitions. Word has length 77 [2021-11-07 01:23:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:59,254 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 8208 transitions. [2021-11-07 01:23:59,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 8208 transitions. [2021-11-07 01:23:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:23:59,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:59,263 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] [2021-11-07 01:23:59,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:59,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:59,478 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:23:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:59,478 INFO L85 PathProgramCache]: Analyzing trace with hash 745049274, now seen corresponding path program 1 times [2021-11-07 01:23:59,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:59,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027678554] [2021-11-07 01:23:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:59,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:59,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:59,480 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:59,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:24:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:00,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:00,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:00,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:00,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:00,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027678554] [2021-11-07 01:24:00,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027678554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:00,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:00,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:00,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621110331] [2021-11-07 01:24:00,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:00,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:00,492 INFO L87 Difference]: Start difference. First operand 4550 states and 8208 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:00,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:00,938 INFO L93 Difference]: Finished difference Result 12691 states and 22919 transitions. [2021-11-07 01:24:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:00,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-07 01:24:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:00,964 INFO L225 Difference]: With dead ends: 12691 [2021-11-07 01:24:00,964 INFO L226 Difference]: Without dead ends: 8309 [2021-11-07 01:24:00,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8309 states. [2021-11-07 01:24:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8309 to 7456. [2021-11-07 01:24:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7450 states have (on average 1.8181208053691276) internal successors, (13545), 7455 states have internal predecessors, (13545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 13545 transitions. [2021-11-07 01:24:01,541 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 13545 transitions. Word has length 78 [2021-11-07 01:24:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:01,543 INFO L470 AbstractCegarLoop]: Abstraction has 7456 states and 13545 transitions. [2021-11-07 01:24:01,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 13545 transitions. [2021-11-07 01:24:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:24:01,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:01,554 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] [2021-11-07 01:24:01,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:01,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:01,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1683067994, now seen corresponding path program 1 times [2021-11-07 01:24:01,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:01,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83312915] [2021-11-07 01:24:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:01,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:01,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:01,772 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:01,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:24:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:02,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:02,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:02,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:02,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:02,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83312915] [2021-11-07 01:24:02,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83312915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:02,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:02,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:02,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113054192] [2021-11-07 01:24:02,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:02,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:02,760 INFO L87 Difference]: Start difference. First operand 7456 states and 13545 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:03,273 INFO L93 Difference]: Finished difference Result 21735 states and 39541 transitions. [2021-11-07 01:24:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 01:24:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:03,315 INFO L225 Difference]: With dead ends: 21735 [2021-11-07 01:24:03,315 INFO L226 Difference]: Without dead ends: 14455 [2021-11-07 01:24:03,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14455 states. [2021-11-07 01:24:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14455 to 13602. [2021-11-07 01:24:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13602 states, 13596 states have (on average 1.8259782288908502) internal successors, (24826), 13601 states have internal predecessors, (24826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13602 states to 13602 states and 24826 transitions. [2021-11-07 01:24:03,942 INFO L78 Accepts]: Start accepts. Automaton has 13602 states and 24826 transitions. Word has length 79 [2021-11-07 01:24:03,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:03,942 INFO L470 AbstractCegarLoop]: Abstraction has 13602 states and 24826 transitions. [2021-11-07 01:24:03,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 13602 states and 24826 transitions. [2021-11-07 01:24:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:24:03,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:03,956 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:03,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:24:04,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:04,172 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:04,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:04,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1858197802, now seen corresponding path program 1 times [2021-11-07 01:24:04,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:04,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337136409] [2021-11-07 01:24:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:04,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:04,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:04,174 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:04,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:24:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:04,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:24:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:04,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:05,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:05,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337136409] [2021-11-07 01:24:05,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337136409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:05,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:05,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:24:05,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380364302] [2021-11-07 01:24:05,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:05,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:05,312 INFO L87 Difference]: Start difference. First operand 13602 states and 24826 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:08,321 INFO L93 Difference]: Finished difference Result 33903 states and 61843 transitions. [2021-11-07 01:24:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:24:08,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 01:24:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:08,374 INFO L225 Difference]: With dead ends: 33903 [2021-11-07 01:24:08,374 INFO L226 Difference]: Without dead ends: 20598 [2021-11-07 01:24:08,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:24:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20598 states. [2021-11-07 01:24:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20598 to 13569. [2021-11-07 01:24:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13569 states, 13563 states have (on average 1.8206886382068863) internal successors, (24694), 13568 states have internal predecessors, (24694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13569 states to 13569 states and 24694 transitions. [2021-11-07 01:24:09,087 INFO L78 Accepts]: Start accepts. Automaton has 13569 states and 24694 transitions. Word has length 80 [2021-11-07 01:24:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:09,088 INFO L470 AbstractCegarLoop]: Abstraction has 13569 states and 24694 transitions. [2021-11-07 01:24:09,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 13569 states and 24694 transitions. [2021-11-07 01:24:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:24:09,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:09,100 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] [2021-11-07 01:24:09,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:09,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:09,316 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash -680598933, now seen corresponding path program 1 times [2021-11-07 01:24:09,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:09,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831016445] [2021-11-07 01:24:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:09,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:09,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:09,318 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:09,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:24:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:09,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:09,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:10,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:10,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:10,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831016445] [2021-11-07 01:24:10,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831016445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:10,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:10,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:10,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270658262] [2021-11-07 01:24:10,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:10,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:10,351 INFO L87 Difference]: Start difference. First operand 13569 states and 24694 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:11,440 INFO L93 Difference]: Finished difference Result 39906 states and 72695 transitions. [2021-11-07 01:24:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:11,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 01:24:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:11,512 INFO L225 Difference]: With dead ends: 39906 [2021-11-07 01:24:11,512 INFO L226 Difference]: Without dead ends: 26520 [2021-11-07 01:24:11,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2021-11-07 01:24:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 25667. [2021-11-07 01:24:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25667 states, 25661 states have (on average 1.8240520634425783) internal successors, (46807), 25666 states have internal predecessors, (46807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25667 states to 25667 states and 46807 transitions. [2021-11-07 01:24:12,913 INFO L78 Accepts]: Start accepts. Automaton has 25667 states and 46807 transitions. Word has length 80 [2021-11-07 01:24:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:12,914 INFO L470 AbstractCegarLoop]: Abstraction has 25667 states and 46807 transitions. [2021-11-07 01:24:12,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25667 states and 46807 transitions. [2021-11-07 01:24:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:24:12,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:12,931 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] [2021-11-07 01:24:12,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:13,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:13,144 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2084178005, now seen corresponding path program 1 times [2021-11-07 01:24:13,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:13,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032549956] [2021-11-07 01:24:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:13,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:13,146 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:13,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:24:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:13,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:13,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:13,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:14,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:14,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032549956] [2021-11-07 01:24:14,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032549956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:14,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:14,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:14,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125473104] [2021-11-07 01:24:14,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:14,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:14,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:14,206 INFO L87 Difference]: Start difference. First operand 25667 states and 46807 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:16,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:16,150 INFO L93 Difference]: Finished difference Result 70839 states and 128770 transitions. [2021-11-07 01:24:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:16,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-07 01:24:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:16,253 INFO L225 Difference]: With dead ends: 70839 [2021-11-07 01:24:16,253 INFO L226 Difference]: Without dead ends: 45402 [2021-11-07 01:24:16,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45402 states. [2021-11-07 01:24:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45402 to 44549. [2021-11-07 01:24:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44549 states, 44543 states have (on average 1.8137979031497653) internal successors, (80792), 44548 states have internal predecessors, (80792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44549 states to 44549 states and 80792 transitions. [2021-11-07 01:24:18,545 INFO L78 Accepts]: Start accepts. Automaton has 44549 states and 80792 transitions. Word has length 81 [2021-11-07 01:24:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:18,545 INFO L470 AbstractCegarLoop]: Abstraction has 44549 states and 80792 transitions. [2021-11-07 01:24:18,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 44549 states and 80792 transitions. [2021-11-07 01:24:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:24:18,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:18,558 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:18,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:18,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:18,760 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:18,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1792931676, now seen corresponding path program 1 times [2021-11-07 01:24:18,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:18,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079996729] [2021-11-07 01:24:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:18,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:18,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:18,763 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:18,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:24:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:19,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:24:19,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:24:19,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:24:19,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:19,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079996729] [2021-11-07 01:24:19,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079996729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:19,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:19,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:24:19,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115255160] [2021-11-07 01:24:19,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:24:19,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:19,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:24:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:24:19,974 INFO L87 Difference]: Start difference. First operand 44549 states and 80792 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:27,053 INFO L93 Difference]: Finished difference Result 173464 states and 314469 transitions. [2021-11-07 01:24:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:24:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 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 [2021-11-07 01:24:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:27,318 INFO L225 Difference]: With dead ends: 173464 [2021-11-07 01:24:27,319 INFO L226 Difference]: Without dead ends: 129211 [2021-11-07 01:24:27,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:24:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129211 states. [2021-11-07 01:24:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129211 to 44291. [2021-11-07 01:24:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44291 states, 44285 states have (on average 1.8010613074404427) internal successors, (79760), 44290 states have internal predecessors, (79760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44291 states to 44291 states and 79760 transitions. [2021-11-07 01:24:31,154 INFO L78 Accepts]: Start accepts. Automaton has 44291 states and 79760 transitions. Word has length 82 [2021-11-07 01:24:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:31,155 INFO L470 AbstractCegarLoop]: Abstraction has 44291 states and 79760 transitions. [2021-11-07 01:24:31,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 44291 states and 79760 transitions. [2021-11-07 01:24:31,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:24:31,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:31,172 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:31,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 01:24:31,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:31,393 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash 532464966, now seen corresponding path program 1 times [2021-11-07 01:24:31,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:31,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784539502] [2021-11-07 01:24:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:31,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:31,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:31,395 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:31,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:24:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:32,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:32,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:32,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:32,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:32,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784539502] [2021-11-07 01:24:32,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784539502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:32,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:32,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:24:32,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832628737] [2021-11-07 01:24:32,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:32,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:32,674 INFO L87 Difference]: Start difference. First operand 44291 states and 79760 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:35,196 INFO L93 Difference]: Finished difference Result 89133 states and 160438 transitions. [2021-11-07 01:24:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:35,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2021-11-07 01:24:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:35,295 INFO L225 Difference]: With dead ends: 89133 [2021-11-07 01:24:35,295 INFO L226 Difference]: Without dead ends: 45144 [2021-11-07 01:24:35,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:35,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45144 states. [2021-11-07 01:24:37,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45144 to 44291. [2021-11-07 01:24:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44291 states, 44285 states have (on average 1.7981709382409394) internal successors, (79632), 44290 states have internal predecessors, (79632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44291 states to 44291 states and 79632 transitions. [2021-11-07 01:24:38,124 INFO L78 Accepts]: Start accepts. Automaton has 44291 states and 79632 transitions. Word has length 82 [2021-11-07 01:24:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:38,124 INFO L470 AbstractCegarLoop]: Abstraction has 44291 states and 79632 transitions. [2021-11-07 01:24:38,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 44291 states and 79632 transitions. [2021-11-07 01:24:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:24:38,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:38,138 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] [2021-11-07 01:24:38,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 01:24:38,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:38,338 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:24:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:38,339 INFO L85 PathProgramCache]: Analyzing trace with hash 74101817, now seen corresponding path program 1 times [2021-11-07 01:24:38,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:38,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391089805] [2021-11-07 01:24:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:38,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:38,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:38,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc0ee63-f69e-4395-8119-7aa3ad929646/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:24:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:39,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:39,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:39,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:39,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:39,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391089805] [2021-11-07 01:24:39,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391089805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:39,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:39,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:24:39,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809585916] [2021-11-07 01:24:39,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:39,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:39,629 INFO L87 Difference]: Start difference. First operand 44291 states and 79632 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:43,581 INFO L93 Difference]: Finished difference Result 124375 states and 223360 transitions. [2021-11-07 01:24:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:43,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 [2021-11-07 01:24:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:43,752 INFO L225 Difference]: With dead ends: 124375 [2021-11-07 01:24:43,752 INFO L226 Difference]: Without dead ends: 80346 [2021-11-07 01:24:43,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:24:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80346 states.