./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --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_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/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_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/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_124e04ef-0862-4b27-97b3-886c1d87a683/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:57:05,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:57:05,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:57:05,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:57:05,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:57:05,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:57:05,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:57:05,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:57:05,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:57:05,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:57:05,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:57:05,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:57:05,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:57:05,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:57:05,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:57:05,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:57:05,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:57:05,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:57:05,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:57:05,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:57:05,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:57:05,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:57:05,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:57:05,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:57:05,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:57:05,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:57:05,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:57:05,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:57:05,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:57:05,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:57:05,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:57:05,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:57:05,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:57:05,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:57:05,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:57:05,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:57:05,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:57:05,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:57:05,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:57:05,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:57:05,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:57:05,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:57:05,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:57:05,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:57:05,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:57:05,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:57:05,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:57:05,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:57:05,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:57:05,466 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:57:05,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:57:05,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:57:05,475 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:57:05,476 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:57:05,476 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:57:05,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:57:05,476 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:57:05,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:57:05,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:57:05,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:57:05,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:57:05,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:57:05,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:57:05,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:57:05,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:57:05,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:57:05,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:57:05,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:57:05,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:57:05,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:57:05,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:57:05,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:57:05,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:05,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:57:05,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:57:05,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:57:05,485 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:57:05,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:57:05,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:57:05,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:57:05,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:57:05,486 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_124e04ef-0862-4b27-97b3-886c1d87a683/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-11-07 01:57:05,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:57:05,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:57:05,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:57:05,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:57:05,849 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:57:05,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-07 01:57:05,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/8a1a91022/450d9409a5184572b13dd2e60efdedee/FLAG065a04942 [2021-11-07 01:57:06,631 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:57:06,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-07 01:57:06,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/8a1a91022/450d9409a5184572b13dd2e60efdedee/FLAG065a04942 [2021-11-07 01:57:06,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/8a1a91022/450d9409a5184572b13dd2e60efdedee [2021-11-07 01:57:06,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:57:06,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:57:06,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:06,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:57:06,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:57:06,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:06" (1/1) ... [2021-11-07 01:57:06,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0fd509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:06, skipping insertion in model container [2021-11-07 01:57:06,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:06" (1/1) ... [2021-11-07 01:57:06,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:57:06,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:07,391 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-07 01:57:07,557 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-07 01:57:07,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:07,605 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 01:57:07,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6aa9138b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:07, skipping insertion in model container [2021-11-07 01:57:07,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:07,606 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:57:07,609 INFO L168 Benchmark]: Toolchain (without parser) took 777.22 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 49.1 MB in the beginning and 85.9 MB in the end (delta: -36.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:07,610 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 56.2 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:57:07,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.33 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 48.8 MB in the beginning and 85.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:07,613 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 86.0 MB. Free memory was 56.2 MB in the beginning and 56.2 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 774.33 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 48.8 MB in the beginning and 85.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/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_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/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_124e04ef-0862-4b27-97b3-886c1d87a683/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:57:09,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:57:09,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:57:09,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:57:09,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:57:09,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:57:09,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:57:09,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:57:09,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:57:09,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:57:09,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:57:09,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:57:09,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:57:09,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:57:09,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:57:09,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:57:09,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:57:09,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:57:09,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:57:09,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:57:09,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:57:09,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:57:09,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:57:09,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:57:09,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:57:09,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:57:09,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:57:09,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:57:09,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:57:09,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:57:09,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:57:09,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:57:09,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:57:09,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:57:09,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:57:09,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:57:09,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:57:09,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:57:09,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:57:09,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:57:09,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:57:09,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:57:09,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:57:09,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:57:09,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:57:09,970 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:57:09,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:57:09,970 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:57:09,970 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:57:09,971 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:57:09,971 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:57:09,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:57:09,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:57:09,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:57:09,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:57:09,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:57:09,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:57:09,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:57:09,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:57:09,975 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:57:09,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:57:09,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:57:09,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:57:09,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:57:09,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:57:09,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:57:09,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:57:09,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:57:09,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:09,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:57:09,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:57:09,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:57:09,979 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:57:09,979 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:09,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:57:09,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:57:09,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:57:09,980 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_124e04ef-0862-4b27-97b3-886c1d87a683/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-11-07 01:57:10,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:57:10,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:57:10,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:57:10,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:57:10,471 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:57:10,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-07 01:57:10,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/484d42c3e/26472f5ef1204ca69026decbc893b142/FLAGe24bf9769 [2021-11-07 01:57:11,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:57:11,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-07 01:57:11,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/484d42c3e/26472f5ef1204ca69026decbc893b142/FLAGe24bf9769 [2021-11-07 01:57:11,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/data/484d42c3e/26472f5ef1204ca69026decbc893b142 [2021-11-07 01:57:11,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:57:11,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:57:11,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:11,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:57:11,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:57:11,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:11" (1/1) ... [2021-11-07 01:57:11,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15094f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:11, skipping insertion in model container [2021-11-07 01:57:11,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:11" (1/1) ... [2021-11-07 01:57:11,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:57:11,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:12,075 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-07 01:57:12,371 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-07 01:57:12,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:12,390 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:57:12,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:12,458 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-07 01:57:12,568 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-07 01:57:12,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:12,576 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:57:12,601 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-07 01:57:12,651 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_124e04ef-0862-4b27-97b3-886c1d87a683/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-07 01:57:12,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:12,724 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:57:12,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12 WrapperNode [2021-11-07 01:57:12,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:12,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:12,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:57:12,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:57:12,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:12,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:57:12,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:57:12,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:57:12,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:13,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:13,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:13,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:13,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:57:13,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:57:13,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:57:13,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:57:13,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:13,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:57:13,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:57:13,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:57:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:57:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:57:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:57:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:57:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:57:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:57:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:57:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:57:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:57:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:57:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:57:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:57:25,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:57:25,426 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-07 01:57:25,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:25 BoogieIcfgContainer [2021-11-07 01:57:25,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:57:25,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:57:25,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:57:25,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:57:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:11" (1/3) ... [2021-11-07 01:57:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6681ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:25, skipping insertion in model container [2021-11-07 01:57:25,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12" (2/3) ... [2021-11-07 01:57:25,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6681ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:25, skipping insertion in model container [2021-11-07 01:57:25,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:25" (3/3) ... [2021-11-07 01:57:25,437 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2021-11-07 01:57:25,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:57:25,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:57:25,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:57:25,491 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 01:57:25,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:57:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 251 states have (on average 1.7250996015936255) internal successors, (433), 257 states have internal predecessors, (433), 0 states have call successors, (0), 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 01:57:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:57:25,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:25,519 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:25,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-07 01:57:25,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:25,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301643433] [2021-11-07 01:57:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:25,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:25,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:25,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:25,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:57:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:25,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:57:25,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:25,878 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 01:57:25,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:25,919 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 01:57:25,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:25,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301643433] [2021-11-07 01:57:25,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301643433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:25,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:25,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:57:25,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912565770] [2021-11-07 01:57:25,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:57:25,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:57:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:57:25,970 INFO L87 Difference]: Start difference. First operand has 258 states, 251 states have (on average 1.7250996015936255) internal successors, (433), 257 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:26,058 INFO L93 Difference]: Finished difference Result 514 states and 864 transitions. [2021-11-07 01:57:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:57:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:57:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:26,073 INFO L225 Difference]: With dead ends: 514 [2021-11-07 01:57:26,074 INFO L226 Difference]: Without dead ends: 254 [2021-11-07 01:57:26,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:57:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-07 01:57:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-07 01:57:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-07 01:57:26,130 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-07 01:57:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-07 01:57:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-07 01:57:26,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:57:26,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:26,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:26,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:26,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:26,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-07 01:57:26,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:26,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712986381] [2021-11-07 01:57:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:26,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:26,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:26,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:26,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:57:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:26,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:26,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:26,846 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 01:57:26,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:27,038 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 01:57:27,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:27,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712986381] [2021-11-07 01:57:27,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712986381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:27,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:27,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:27,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918521964] [2021-11-07 01:57:27,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:27,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:27,044 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:27,406 INFO L93 Difference]: Finished difference Result 589 states and 772 transitions. [2021-11-07 01:57:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 01:57:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:27,414 INFO L225 Difference]: With dead ends: 589 [2021-11-07 01:57:27,414 INFO L226 Difference]: Without dead ends: 507 [2021-11-07 01:57:27,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-07 01:57:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 425. [2021-11-07 01:57:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.331742243436754) internal successors, (558), 424 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2021-11-07 01:57:27,453 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2021-11-07 01:57:27,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:27,454 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2021-11-07 01:57:27,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2021-11-07 01:57:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 01:57:27,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:27,470 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:27,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:27,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:27,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1555923977, now seen corresponding path program 1 times [2021-11-07 01:57:27,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:27,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875704986] [2021-11-07 01:57:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:27,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:27,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:27,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:57:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:28,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:57:28,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:57:29,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:57:30,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:30,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875704986] [2021-11-07 01:57:30,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875704986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:30,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:30,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:57:30,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079408137] [2021-11-07 01:57:30,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:30,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:30,010 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:30,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:30,156 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2021-11-07 01:57:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:30,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 01:57:30,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:30,160 INFO L225 Difference]: With dead ends: 850 [2021-11-07 01:57:30,160 INFO L226 Difference]: Without dead ends: 433 [2021-11-07 01:57:30,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:57:30,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-07 01:57:30,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 431. [2021-11-07 01:57:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2894117647058823) internal successors, (548), 430 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 548 transitions. [2021-11-07 01:57:30,185 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 548 transitions. Word has length 238 [2021-11-07 01:57:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:30,186 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 548 transitions. [2021-11-07 01:57:30,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:30,186 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 548 transitions. [2021-11-07 01:57:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 01:57:30,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:30,192 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:30,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:30,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:30,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 370544607, now seen corresponding path program 1 times [2021-11-07 01:57:30,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:30,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573042302] [2021-11-07 01:57:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:30,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:30,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:30,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:57:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:31,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:57:31,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:57:32,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:57:33,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:33,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573042302] [2021-11-07 01:57:33,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573042302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:33,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:33,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:57:33,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449715333] [2021-11-07 01:57:33,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:57:33,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:57:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:57:33,240 INFO L87 Difference]: Start difference. First operand 431 states and 548 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:33,394 INFO L93 Difference]: Finished difference Result 819 states and 1049 transitions. [2021-11-07 01:57:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:33,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 01:57:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:33,399 INFO L225 Difference]: With dead ends: 819 [2021-11-07 01:57:33,399 INFO L226 Difference]: Without dead ends: 419 [2021-11-07 01:57:33,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:57:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-07 01:57:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-07 01:57:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.278450363196126) internal successors, (528), 418 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2021-11-07 01:57:33,420 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 238 [2021-11-07 01:57:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:33,421 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2021-11-07 01:57:33,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2021-11-07 01:57:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 01:57:33,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:33,426 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:33,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:33,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:33,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash -919406365, now seen corresponding path program 1 times [2021-11-07 01:57:33,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:33,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002685948] [2021-11-07 01:57:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:33,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:33,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:33,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:33,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:57:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:34,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:57:34,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:57:35,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:57:36,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:36,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002685948] [2021-11-07 01:57:36,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002685948] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:36,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:36,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:57:36,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833704675] [2021-11-07 01:57:36,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:36,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:36,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:36,376 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:36,869 INFO L93 Difference]: Finished difference Result 789 states and 1004 transitions. [2021-11-07 01:57:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:36,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 01:57:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:36,880 INFO L225 Difference]: With dead ends: 789 [2021-11-07 01:57:36,880 INFO L226 Difference]: Without dead ends: 417 [2021-11-07 01:57:36,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-07 01:57:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-07 01:57:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 411 states have (on average 1.2773722627737227) internal successors, (525), 416 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 525 transitions. [2021-11-07 01:57:36,899 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 525 transitions. Word has length 238 [2021-11-07 01:57:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:36,900 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 525 transitions. [2021-11-07 01:57:36,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 525 transitions. [2021-11-07 01:57:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-07 01:57:36,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:36,905 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:36,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:37,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:37,121 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706643, now seen corresponding path program 1 times [2021-11-07 01:57:37,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:37,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700445310] [2021-11-07 01:57:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:37,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:37,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:37,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:37,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:57:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:38,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:57:38,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:57:38,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:57:39,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:39,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700445310] [2021-11-07 01:57:39,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700445310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:39,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:39,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:39,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411573452] [2021-11-07 01:57:39,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:39,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:39,645 INFO L87 Difference]: Start difference. First operand 417 states and 525 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:39,792 INFO L93 Difference]: Finished difference Result 805 states and 1032 transitions. [2021-11-07 01:57:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2021-11-07 01:57:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:39,797 INFO L225 Difference]: With dead ends: 805 [2021-11-07 01:57:39,797 INFO L226 Difference]: Without dead ends: 429 [2021-11-07 01:57:39,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-07 01:57:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-07 01:57:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 423 states have (on average 1.2695035460992907) internal successors, (537), 428 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 537 transitions. [2021-11-07 01:57:39,818 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 537 transitions. Word has length 245 [2021-11-07 01:57:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:39,820 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 537 transitions. [2021-11-07 01:57:39,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 537 transitions. [2021-11-07 01:57:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-07 01:57:39,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:39,826 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:39,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:40,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:40,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash 660379208, now seen corresponding path program 1 times [2021-11-07 01:57:40,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:40,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664067117] [2021-11-07 01:57:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:40,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:40,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:40,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:57:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:41,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:41,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:57:41,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:57:42,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:42,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664067117] [2021-11-07 01:57:42,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664067117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:57:42,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728010394] [2021-11-07 01:57:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:42,523 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:42,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:57:42,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:57:42,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:57:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:43,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:43,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:57:44,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:57:45,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [728010394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:45,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:57:45,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:57:45,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327933522] [2021-11-07 01:57:45,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:45,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:57:45,146 INFO L87 Difference]: Start difference. First operand 429 states and 537 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:45,313 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2021-11-07 01:57:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:45,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-07 01:57:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:45,320 INFO L225 Difference]: With dead ends: 803 [2021-11-07 01:57:45,321 INFO L226 Difference]: Without dead ends: 471 [2021-11-07 01:57:45,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:57:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-07 01:57:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2021-11-07 01:57:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 463 states have (on average 1.2462203023758098) internal successors, (577), 468 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2021-11-07 01:57:45,343 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 248 [2021-11-07 01:57:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:45,344 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2021-11-07 01:57:45,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2021-11-07 01:57:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-07 01:57:45,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:45,381 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:45,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:45,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:45,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:45,782 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash -372700096, now seen corresponding path program 1 times [2021-11-07 01:57:45,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:45,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561086595] [2021-11-07 01:57:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:45,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:45,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:45,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:57:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:57:47,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:57:48,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:48,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561086595] [2021-11-07 01:57:48,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561086595] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:57:48,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [200696905] [2021-11-07 01:57:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:48,575 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:57:48,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:57:48,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:57:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:50,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:57:50,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:57:51,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:57:51,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [200696905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:51,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:57:51,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:57:51,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747465803] [2021-11-07 01:57:51,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:51,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:51,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:51,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:57:51,886 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:52,947 INFO L93 Difference]: Finished difference Result 1027 states and 1273 transitions. [2021-11-07 01:57:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:52,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-07 01:57:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:52,954 INFO L225 Difference]: With dead ends: 1027 [2021-11-07 01:57:52,954 INFO L226 Difference]: Without dead ends: 752 [2021-11-07 01:57:52,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:57:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-07 01:57:52,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 740. [2021-11-07 01:57:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.2574931880108993) internal successors, (923), 739 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 923 transitions. [2021-11-07 01:57:52,989 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 923 transitions. Word has length 248 [2021-11-07 01:57:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:52,991 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 923 transitions. [2021-11-07 01:57:52,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 923 transitions. [2021-11-07 01:57:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-07 01:57:52,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:52,997 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:53,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:53,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:53,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:53,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:57:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash -292299512, now seen corresponding path program 1 times [2021-11-07 01:57:53,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:53,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954966849] [2021-11-07 01:57:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:53,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:53,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:53,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:53,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:57:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:55,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:55,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:57:55,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:57:56,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:56,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954966849] [2021-11-07 01:57:56,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954966849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:57:56,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1209837447] [2021-11-07 01:57:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:56,562 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:56,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:57:56,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:57:56,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:57:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:57:58,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-07 01:58:00,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-07 01:58:02,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1209837447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:02,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:58:02,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:58:02,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592045104] [2021-11-07 01:58:02,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:58:02,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:58:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:58:02,735 INFO L87 Difference]: Start difference. First operand 740 states and 923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:03,999 INFO L93 Difference]: Finished difference Result 1052 states and 1305 transitions. [2021-11-07 01:58:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:58:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-11-07 01:58:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:04,005 INFO L225 Difference]: With dead ends: 1052 [2021-11-07 01:58:04,005 INFO L226 Difference]: Without dead ends: 749 [2021-11-07 01:58:04,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:58:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-07 01:58:04,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-07 01:58:04,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 731 states have (on average 1.2571819425444597) internal successors, (919), 736 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 919 transitions. [2021-11-07 01:58:04,032 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 919 transitions. Word has length 255 [2021-11-07 01:58:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:04,033 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 919 transitions. [2021-11-07 01:58:04,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 919 transitions. [2021-11-07 01:58:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 01:58:04,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:04,038 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:04,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 01:58:04,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:04,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:04,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:58:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash 24612397, now seen corresponding path program 1 times [2021-11-07 01:58:04,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:04,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904772493] [2021-11-07 01:58:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:04,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:04,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:04,450 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:04,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:58:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:06,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:58:06,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:07,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:07,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:07,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904772493] [2021-11-07 01:58:07,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904772493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:07,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [957027692] [2021-11-07 01:58:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:07,848 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:58:07,849 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:58:07,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:58:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:10,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:58:10,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 01:58:10,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 01:58:11,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [957027692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:11,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:58:11,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:58:11,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434977719] [2021-11-07 01:58:11,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:58:11,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:58:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:58:11,200 INFO L87 Difference]: Start difference. First operand 737 states and 919 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:11,329 INFO L93 Difference]: Finished difference Result 959 states and 1227 transitions. [2021-11-07 01:58:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:58:11,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 01:58:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:11,335 INFO L225 Difference]: With dead ends: 959 [2021-11-07 01:58:11,336 INFO L226 Difference]: Without dead ends: 800 [2021-11-07 01:58:11,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:58:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-07 01:58:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2021-11-07 01:58:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 791 states have (on average 1.2376738305941846) internal successors, (979), 796 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 979 transitions. [2021-11-07 01:58:11,366 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 979 transitions. Word has length 265 [2021-11-07 01:58:11,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:11,367 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 979 transitions. [2021-11-07 01:58:11,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 979 transitions. [2021-11-07 01:58:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 01:58:11,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:11,370 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:11,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:11,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:11,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:11,779 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:58:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1170519209, now seen corresponding path program 1 times [2021-11-07 01:58:11,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:11,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281381747] [2021-11-07 01:58:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:11,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:11,782 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:58:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:13,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:58:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:14,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:15,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:15,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281381747] [2021-11-07 01:58:15,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281381747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:15,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420093707] [2021-11-07 01:58:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:15,266 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:58:15,267 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:58:15,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:58:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:17,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:58:17,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:58:18,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:58:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420093707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:19,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:58:19,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 01:58:19,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800953449] [2021-11-07 01:58:19,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:58:19,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:19,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:58:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:58:19,037 INFO L87 Difference]: Start difference. First operand 797 states and 979 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:19,179 INFO L93 Difference]: Finished difference Result 1457 states and 1807 transitions. [2021-11-07 01:58:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:58:19,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 01:58:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:19,184 INFO L225 Difference]: With dead ends: 1457 [2021-11-07 01:58:19,184 INFO L226 Difference]: Without dead ends: 749 [2021-11-07 01:58:19,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:58:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-07 01:58:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2021-11-07 01:58:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 740 states have (on average 1.2094594594594594) internal successors, (895), 745 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2021-11-07 01:58:19,209 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 265 [2021-11-07 01:58:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:19,210 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2021-11-07 01:58:19,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2021-11-07 01:58:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 01:58:19,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:19,213 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:19,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:19,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:19,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:19,637 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:58:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1760654349, now seen corresponding path program 1 times [2021-11-07 01:58:19,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:19,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553696854] [2021-11-07 01:58:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:19,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:19,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:19,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:58:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:21,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:58:21,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:22,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:23,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:23,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553696854] [2021-11-07 01:58:23,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553696854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:23,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557444860] [2021-11-07 01:58:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:23,276 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:58:23,277 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:58:23,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:58:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:26,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:58:26,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 01:58:26,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 01:58:27,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557444860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:27,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:58:27,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 01:58:27,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140068216] [2021-11-07 01:58:27,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:58:27,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:58:27,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:58:27,093 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:27,219 INFO L93 Difference]: Finished difference Result 929 states and 1137 transitions. [2021-11-07 01:58:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:58:27,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 01:58:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:27,224 INFO L225 Difference]: With dead ends: 929 [2021-11-07 01:58:27,225 INFO L226 Difference]: Without dead ends: 702 [2021-11-07 01:58:27,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:58:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-07 01:58:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 695. [2021-11-07 01:58:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 689 states have (on average 1.1770682148040639) internal successors, (811), 694 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 811 transitions. [2021-11-07 01:58:27,251 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 811 transitions. Word has length 265 [2021-11-07 01:58:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:27,252 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 811 transitions. [2021-11-07 01:58:27,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 811 transitions. [2021-11-07 01:58:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 01:58:27,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:27,255 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:27,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:27,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:27,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:27,670 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:58:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash -625509349, now seen corresponding path program 1 times [2021-11-07 01:58:27,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:27,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434446518] [2021-11-07 01:58:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:27,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:27,672 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:27,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:58:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:30,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:58:30,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:30,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:31,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:31,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434446518] [2021-11-07 01:58:31,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434446518] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:31,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [62507520] [2021-11-07 01:58:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:31,651 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:31,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:58:31,652 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:58:31,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:58:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:35,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:58:35,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:35,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:58:36,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [62507520] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:36,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751095249] [2021-11-07 01:58:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:36,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:58:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:58:36,419 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:58:36,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:58:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:39,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:58:39,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-07 01:58:40,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-07 01:58:40,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751095249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:40,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:58:40,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:58:40,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103201554] [2021-11-07 01:58:40,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:58:40,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:58:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:58:40,744 INFO L87 Difference]: Start difference. First operand 695 states and 811 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:41,316 INFO L93 Difference]: Finished difference Result 1387 states and 1658 transitions. [2021-11-07 01:58:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:58:41,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 01:58:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:41,321 INFO L225 Difference]: With dead ends: 1387 [2021-11-07 01:58:41,322 INFO L226 Difference]: Without dead ends: 735 [2021-11-07 01:58:41,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:58:41,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-07 01:58:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-07 01:58:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 729 states have (on average 1.1673525377229081) internal successors, (851), 734 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 851 transitions. [2021-11-07 01:58:41,358 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 851 transitions. Word has length 265 [2021-11-07 01:58:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:41,358 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 851 transitions. [2021-11-07 01:58:41,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 851 transitions. [2021-11-07 01:58:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-07 01:58:41,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:41,362 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:41,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:41,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:41,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 01:58:41,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:58:41,971 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:58:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1379426587, now seen corresponding path program 2 times [2021-11-07 01:58:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:41,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463679462] [2021-11-07 01:58:41,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:58:41,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:41,974 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:41,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:58:45,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:58:45,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:58:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:58:45,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-07 01:58:45,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-07 01:58:46,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:46,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463679462] [2021-11-07 01:58:46,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463679462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:46,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [675980874] [2021-11-07 01:58:46,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:58:46,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:46,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:58:46,821 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:58:46,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:58:52,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:58:52,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:58:52,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:58:52,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-07 01:58:53,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-07 01:58:53,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [675980874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:53,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076136193] [2021-11-07 01:58:53,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:58:53,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:58:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:58:53,723 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:58:53,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 01:58:57,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:58:57,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:58:57,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:58:57,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-07 01:58:58,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-07 01:58:59,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076136193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:58:59,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:58:59,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-07 01:58:59,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548583467] [2021-11-07 01:58:59,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:58:59,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:58:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:58:59,395 INFO L87 Difference]: Start difference. First operand 735 states and 851 transitions. Second operand has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:25,240 INFO L93 Difference]: Finished difference Result 3281 states and 3971 transitions. [2021-11-07 01:59:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-07 01:59:25,243 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2021-11-07 01:59:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:25,256 INFO L225 Difference]: With dead ends: 3281 [2021-11-07 01:59:25,257 INFO L226 Difference]: Without dead ends: 2593 [2021-11-07 01:59:25,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2593, Invalid=8963, Unknown=0, NotChecked=0, Total=11556 [2021-11-07 01:59:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-07 01:59:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2211. [2021-11-07 01:59:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2205 states have (on average 1.1551020408163266) internal successors, (2547), 2210 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2547 transitions. [2021-11-07 01:59:25,398 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2547 transitions. Word has length 281 [2021-11-07 01:59:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:25,398 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2547 transitions. [2021-11-07 01:59:25,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2547 transitions. [2021-11-07 01:59:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2021-11-07 01:59:25,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:25,408 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:25,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:25,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:25,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-07 01:59:26,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:59:26,017 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:59:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash -308654593, now seen corresponding path program 3 times [2021-11-07 01:59:26,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:26,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735558244] [2021-11-07 01:59:26,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:59:26,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:26,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:26,021 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:26,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124e04ef-0862-4b27-97b3-886c1d87a683/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process