./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/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_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/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_fceb9e0d-0f57-4267-bf0b-5030951f5888/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:31:01,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:31:01,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:31:01,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:31:01,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:31:01,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:31:01,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:31:01,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:31:01,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:31:01,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:31:01,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:31:01,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:31:01,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:31:01,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:31:01,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:31:01,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:31:01,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:31:01,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:31:01,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:31:01,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:31:01,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:31:01,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:31:01,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:31:01,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:31:01,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:31:01,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:31:01,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:31:01,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:31:01,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:31:01,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:31:01,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:31:01,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:31:01,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:31:01,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:31:01,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:31:01,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:31:01,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:31:01,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:31:01,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:31:01,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:31:01,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:31:01,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:31:01,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:31:01,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:31:01,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:31:01,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:31:01,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:31:01,417 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:31:01,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:31:01,417 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:31:01,417 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:31:01,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:31:01,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:31:01,418 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:31:01,418 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:31:01,418 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:31:01,419 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:31:01,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:31:01,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:31:01,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:31:01,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:31:01,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:31:01,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:31:01,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:31:01,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:31:01,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:31:01,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:31:01,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:31:01,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:31:01,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:31:01,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:31:01,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:31:01,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:01,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:31:01,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:31:01,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:31:01,423 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:31:01,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:31:01,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:31:01,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:31:01,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:31:01,424 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2021-11-07 01:31:01,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:31:01,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:31:01,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:31:01,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:31:01,693 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:31:01,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-07 01:31:01,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/ed0153e16/7c67658a60dd4a5695dbc6063beab52b/FLAG553e56c3b [2021-11-07 01:31:02,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:31:02,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-07 01:31:02,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/ed0153e16/7c67658a60dd4a5695dbc6063beab52b/FLAG553e56c3b [2021-11-07 01:31:02,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/ed0153e16/7c67658a60dd4a5695dbc6063beab52b [2021-11-07 01:31:02,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:31:02,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:31:02,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:02,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:31:02,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:31:02,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:02" (1/1) ... [2021-11-07 01:31:02,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eaa3f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:02, skipping insertion in model container [2021-11-07 01:31:02,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:02" (1/1) ... [2021-11-07 01:31:02,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:31:02,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:31:02,817 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-07 01:31:02,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:02,834 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 01:31:02,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57491a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:02, skipping insertion in model container [2021-11-07 01:31:02,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:02,836 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:31:02,838 INFO L168 Benchmark]: Toolchain (without parser) took 281.76 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.3 MB in the beginning and 90.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:31:02,839 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory is still 67.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:31:02,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.29 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.1 MB in the beginning and 90.4 MB in the end (delta: -39.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:31:02,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory is still 67.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.29 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.1 MB in the beginning and 90.4 MB in the end (delta: -39.3 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: 106]: 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/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_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/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_fceb9e0d-0f57-4267-bf0b-5030951f5888/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:31:05,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:31:05,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:31:05,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:31:05,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:31:05,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:31:05,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:31:05,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:31:05,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:31:05,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:31:05,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:31:05,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:31:05,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:31:05,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:31:05,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:31:05,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:31:05,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:31:05,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:31:05,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:31:05,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:31:05,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:31:05,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:31:05,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:31:05,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:31:05,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:31:05,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:31:05,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:31:05,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:31:05,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:31:05,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:31:05,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:31:05,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:31:05,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:31:05,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:31:05,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:31:05,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:31:05,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:31:05,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:31:05,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:31:05,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:31:05,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:31:05,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:31:05,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:31:05,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:31:05,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:31:05,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:31:05,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:31:05,223 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:31:05,223 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:31:05,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:31:05,223 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:31:05,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:31:05,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:31:05,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:31:05,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:31:05,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:31:05,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:31:05,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:31:05,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:31:05,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:31:05,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:31:05,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:31:05,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:31:05,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:31:05,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:31:05,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:31:05,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:31:05,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:31:05,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:05,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:31:05,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:31:05,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:31:05,231 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:31:05,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:05,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:31:05,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:31:05,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:31:05,232 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2021-11-07 01:31:05,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:31:05,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:31:05,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:31:05,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:31:05,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:31:05,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-07 01:31:05,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/65f174340/e5157b71173a495d90aacb1bde7fcdc1/FLAG427311091 [2021-11-07 01:31:06,103 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:31:06,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-07 01:31:06,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/65f174340/e5157b71173a495d90aacb1bde7fcdc1/FLAG427311091 [2021-11-07 01:31:06,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/data/65f174340/e5157b71173a495d90aacb1bde7fcdc1 [2021-11-07 01:31:06,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:31:06,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:31:06,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:06,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:31:06,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:31:06,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:06,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b67b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06, skipping insertion in model container [2021-11-07 01:31:06,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:06,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:31:06,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:31:06,759 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-07 01:31:06,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:06,825 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:31:06,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:31:06,877 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-07 01:31:06,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:06,886 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:31:06,924 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_fceb9e0d-0f57-4267-bf0b-5030951f5888/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-07 01:31:06,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:06,944 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:31:06,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06 WrapperNode [2021-11-07 01:31:06,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:06,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:31:06,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:31:06,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:31:06,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:06,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:06,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:31:06,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:31:06,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:31:06,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:31:07,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:31:07,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:31:07,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:31:07,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:31:07,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (1/1) ... [2021-11-07 01:31:07,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:07,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:07,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:31:07,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:31:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:31:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:31:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:31:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:31:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:31:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:31:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:31:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:31:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:31:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:31:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:31:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:31:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:31:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:31:07,128 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:31:07,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:31:07,869 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-11-07 01:31:07,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:07 BoogieIcfgContainer [2021-11-07 01:31:07,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:31:07,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:31:07,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:31:07,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:31:07,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:31:06" (1/3) ... [2021-11-07 01:31:07,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22b55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:07, skipping insertion in model container [2021-11-07 01:31:07,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:06" (2/3) ... [2021-11-07 01:31:07,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22b55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:07, skipping insertion in model container [2021-11-07 01:31:07,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:07" (3/3) ... [2021-11-07 01:31:07,886 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2021-11-07 01:31:07,892 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:31:07,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:31:07,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:31:07,900 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:31:07,966 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,968 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,969 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,969 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,970 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,970 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,971 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,972 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,974 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,975 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,975 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,976 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,977 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,978 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,978 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,979 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,979 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,979 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,979 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,980 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,980 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,982 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,982 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,983 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,983 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,984 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,985 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,985 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,985 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,985 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,986 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,987 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,987 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,988 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,988 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,989 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,990 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,991 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,991 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,992 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,992 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,995 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,996 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:07,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,001 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,004 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,004 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,004 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,005 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,005 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,005 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:31:08,012 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-07 01:31:08,070 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:31:08,076 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 01:31:08,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:31:08,102 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:31:08,112 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 257 transitions, 538 flow [2021-11-07 01:31:08,115 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 257 transitions, 538 flow [2021-11-07 01:31:08,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 538 flow [2021-11-07 01:31:08,243 INFO L129 PetriNetUnfolder]: 25/254 cut-off events. [2021-11-07 01:31:08,243 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 01:31:08,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 25/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 174 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2021-11-07 01:31:08,255 INFO L116 LiptonReduction]: Number of co-enabled transitions 2184 [2021-11-07 01:31:29,127 INFO L131 LiptonReduction]: Checked pairs total: 3940 [2021-11-07 01:31:29,127 INFO L133 LiptonReduction]: Total number of compositions: 265 [2021-11-07 01:31:29,137 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 40 transitions, 104 flow [2021-11-07 01:31:29,182 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 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 01:31:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 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 01:31:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:31:29,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:29,206 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] [2021-11-07 01:31:29,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1627424181, now seen corresponding path program 1 times [2021-11-07 01:31:29,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:29,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903490760] [2021-11-07 01:31:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:29,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:29,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:29,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:31:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:29,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:31:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:29,738 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 01:31:29,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:29,839 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 01:31:29,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:29,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903490760] [2021-11-07 01:31:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903490760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:29,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:29,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 01:31:29,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741088741] [2021-11-07 01:31:29,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:31:29,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:31:29,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:31:29,875 INFO L87 Difference]: Start difference. First operand has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 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 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:31:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:30,089 INFO L93 Difference]: Finished difference Result 687 states and 2234 transitions. [2021-11-07 01:31:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:31:30,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-11-07 01:31:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:30,114 INFO L225 Difference]: With dead ends: 687 [2021-11-07 01:31:30,114 INFO L226 Difference]: Without dead ends: 564 [2021-11-07 01:31:30,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:31:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-07 01:31:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 440. [2021-11-07 01:31:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.2710706150341684) internal successors, (1436), 439 states have internal predecessors, (1436), 0 states have call successors, (0), 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 01:31:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1436 transitions. [2021-11-07 01:31:30,200 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1436 transitions. Word has length 23 [2021-11-07 01:31:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:30,202 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1436 transitions. [2021-11-07 01:31:30,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:31:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1436 transitions. [2021-11-07 01:31:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:31:30,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:30,209 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] [2021-11-07 01:31:30,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:30,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:30,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash -290193610, now seen corresponding path program 1 times [2021-11-07 01:31:30,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:30,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431831820] [2021-11-07 01:31:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:30,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:30,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:30,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:30,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:31:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:30,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:31:30,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:30,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:31,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:31,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431831820] [2021-11-07 01:31:31,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431831820] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:31:31,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:31:31,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-07 01:31:31,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045317784] [2021-11-07 01:31:31,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:31:31,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:31:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:31:31,172 INFO L87 Difference]: Start difference. First operand 440 states and 1436 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:31:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:31,432 INFO L93 Difference]: Finished difference Result 572 states and 1804 transitions. [2021-11-07 01:31:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:31:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-07 01:31:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:31,441 INFO L225 Difference]: With dead ends: 572 [2021-11-07 01:31:31,441 INFO L226 Difference]: Without dead ends: 444 [2021-11-07 01:31:31,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:31:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-07 01:31:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-11-07 01:31:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.250564334085779) internal successors, (1440), 443 states have internal predecessors, (1440), 0 states have call successors, (0), 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 01:31:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1440 transitions. [2021-11-07 01:31:31,482 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1440 transitions. Word has length 26 [2021-11-07 01:31:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:31,482 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1440 transitions. [2021-11-07 01:31:31,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:31:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1440 transitions. [2021-11-07 01:31:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:31:31,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:31,489 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] [2021-11-07 01:31:31,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:31:31,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:31,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:31,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1563730839, now seen corresponding path program 1 times [2021-11-07 01:31:31,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:31,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535501065] [2021-11-07 01:31:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:31,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:31,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:31,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:31,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:31:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:31,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:31:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:32,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:32,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:32,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535501065] [2021-11-07 01:31:32,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535501065] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:32,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [74035853] [2021-11-07 01:31:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:32,748 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:31:32,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:31:32,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:31:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:33,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:31:33,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:33,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:33,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [74035853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:33,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376313661] [2021-11-07 01:31:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:33,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:33,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:33,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:33,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:31:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:31:33,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:34,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:34,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376313661] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:31:34,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-11-07 01:31:34,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 7, 7, 9] total 38 [2021-11-07 01:31:34,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832417867] [2021-11-07 01:31:34,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:31:34,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:31:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1182, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 01:31:34,616 INFO L87 Difference]: Start difference. First operand 444 states and 1440 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:31:35,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:35,075 INFO L93 Difference]: Finished difference Result 851 states and 2720 transitions. [2021-11-07 01:31:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:31:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 01:31:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:35,085 INFO L225 Difference]: With dead ends: 851 [2021-11-07 01:31:35,085 INFO L226 Difference]: Without dead ends: 832 [2021-11-07 01:31:35,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=1452, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 01:31:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-11-07 01:31:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 514. [2021-11-07 01:31:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.216374269005848) internal successors, (1650), 513 states have internal predecessors, (1650), 0 states have call successors, (0), 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 01:31:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1650 transitions. [2021-11-07 01:31:35,116 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1650 transitions. Word has length 30 [2021-11-07 01:31:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:35,116 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1650 transitions. [2021-11-07 01:31:35,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:31:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1650 transitions. [2021-11-07 01:31:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:31:35,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:35,120 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] [2021-11-07 01:31:35,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:35,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 01:31:35,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:35,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:35,723 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1658905071, now seen corresponding path program 2 times [2021-11-07 01:31:35,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:35,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245541848] [2021-11-07 01:31:35,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:31:35,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:35,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:35,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:31:36,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:31:36,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:36,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:31:36,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:31:36,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:31:36,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:36,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245541848] [2021-11-07 01:31:36,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245541848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:36,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:36,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-07 01:31:36,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133222617] [2021-11-07 01:31:36,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:31:36,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:31:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:31:36,534 INFO L87 Difference]: Start difference. First operand 514 states and 1650 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:31:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:37,523 INFO L93 Difference]: Finished difference Result 1373 states and 4467 transitions. [2021-11-07 01:31:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:31:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 30 [2021-11-07 01:31:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:37,539 INFO L225 Difference]: With dead ends: 1373 [2021-11-07 01:31:37,539 INFO L226 Difference]: Without dead ends: 1356 [2021-11-07 01:31:37,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:31:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-11-07 01:31:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 528. [2021-11-07 01:31:37,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 3.275142314990512) internal successors, (1726), 527 states have internal predecessors, (1726), 0 states have call successors, (0), 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 01:31:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1726 transitions. [2021-11-07 01:31:37,576 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1726 transitions. Word has length 30 [2021-11-07 01:31:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:37,577 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1726 transitions. [2021-11-07 01:31:37,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:31:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1726 transitions. [2021-11-07 01:31:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:31:37,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:37,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:37,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:37,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:37,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1627139071, now seen corresponding path program 3 times [2021-11-07 01:31:37,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:37,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737571148] [2021-11-07 01:31:37,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:31:37,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:37,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:37,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:31:38,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:31:38,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:38,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:31:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:31:38,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:31:38,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:38,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737571148] [2021-11-07 01:31:38,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737571148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:38,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:38,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-07 01:31:38,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663157359] [2021-11-07 01:31:38,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:31:38,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:38,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:31:38,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:31:38,641 INFO L87 Difference]: Start difference. First operand 528 states and 1726 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:31:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:39,457 INFO L93 Difference]: Finished difference Result 1137 states and 3735 transitions. [2021-11-07 01:31:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:31:39,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 30 [2021-11-07 01:31:39,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:39,471 INFO L225 Difference]: With dead ends: 1137 [2021-11-07 01:31:39,471 INFO L226 Difference]: Without dead ends: 1120 [2021-11-07 01:31:39,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:31:39,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-07 01:31:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 542. [2021-11-07 01:31:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.253234750462107) internal successors, (1760), 541 states have internal predecessors, (1760), 0 states have call successors, (0), 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 01:31:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1760 transitions. [2021-11-07 01:31:39,501 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1760 transitions. Word has length 30 [2021-11-07 01:31:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:39,503 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1760 transitions. [2021-11-07 01:31:39,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:31:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1760 transitions. [2021-11-07 01:31:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:31:39,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:39,508 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] [2021-11-07 01:31:39,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:39,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:39,727 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash 491191429, now seen corresponding path program 4 times [2021-11-07 01:31:39,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:39,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318776365] [2021-11-07 01:31:39,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:31:39,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:39,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:39,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:39,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:31:40,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:31:40,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:40,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:31:40,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:40,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:40,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:40,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318776365] [2021-11-07 01:31:40,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318776365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:40,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949826682] [2021-11-07 01:31:40,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:31:40,808 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:31:40,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:31:40,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:31:41,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:31:41,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:31:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:41,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:41,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [949826682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:41,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383555294] [2021-11-07 01:31:41,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:31:41,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:41,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:41,669 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:41,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:31:41,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:31:41,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:41,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:31:41,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:42,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:42,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383555294] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:31:42,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-11-07 01:31:42,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 7, 7, 9] total 36 [2021-11-07 01:31:42,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495024795] [2021-11-07 01:31:42,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:31:42,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:31:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 01:31:42,740 INFO L87 Difference]: Start difference. First operand 542 states and 1760 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:31:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:43,412 INFO L93 Difference]: Finished difference Result 893 states and 2878 transitions. [2021-11-07 01:31:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:31:43,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 01:31:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:43,423 INFO L225 Difference]: With dead ends: 893 [2021-11-07 01:31:43,423 INFO L226 Difference]: Without dead ends: 874 [2021-11-07 01:31:43,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 01:31:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-07 01:31:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 570. [2021-11-07 01:31:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.2618629173989455) internal successors, (1856), 569 states have internal predecessors, (1856), 0 states have call successors, (0), 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 01:31:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1856 transitions. [2021-11-07 01:31:43,449 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1856 transitions. Word has length 30 [2021-11-07 01:31:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:43,450 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1856 transitions. [2021-11-07 01:31:43,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:31:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1856 transitions. [2021-11-07 01:31:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:31:43,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:43,453 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] [2021-11-07 01:31:43,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 01:31:43,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:43,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:44,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:44,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1529967895, now seen corresponding path program 5 times [2021-11-07 01:31:44,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:44,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158160883] [2021-11-07 01:31:44,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:31:44,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:44,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:44,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:31:44,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:31:44,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:44,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:31:44,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:44,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:45,080 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:45,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158160883] [2021-11-07 01:31:45,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158160883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:45,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [159513335] [2021-11-07 01:31:45,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:31:45,080 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:45,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:31:45,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:31:45,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:31:46,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:31:46,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:46,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:31:46,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:46,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:46,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [159513335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:46,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365371565] [2021-11-07 01:31:46,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:31:46,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:46,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:46,793 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:46,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 01:31:48,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:31:48,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:48,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:31:48,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:48,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:31:48,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365371565] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:31:48,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-11-07 01:31:48,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 9, 7, 7, 9] total 33 [2021-11-07 01:31:48,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692739063] [2021-11-07 01:31:48,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:31:48,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:31:48,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 01:31:48,840 INFO L87 Difference]: Start difference. First operand 570 states and 1856 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:31:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:49,314 INFO L93 Difference]: Finished difference Result 1099 states and 3582 transitions. [2021-11-07 01:31:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:31:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 01:31:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:49,327 INFO L225 Difference]: With dead ends: 1099 [2021-11-07 01:31:49,327 INFO L226 Difference]: Without dead ends: 1080 [2021-11-07 01:31:49,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 01:31:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-07 01:31:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 584. [2021-11-07 01:31:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.313893653516295) internal successors, (1932), 583 states have internal predecessors, (1932), 0 states have call successors, (0), 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 01:31:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1932 transitions. [2021-11-07 01:31:49,360 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1932 transitions. Word has length 30 [2021-11-07 01:31:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:49,360 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1932 transitions. [2021-11-07 01:31:49,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:31:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1932 transitions. [2021-11-07 01:31:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:31:49,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:49,363 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] [2021-11-07 01:31:49,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 01:31:49,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:31:49,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-07 01:31:49,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:49,968 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash 521044741, now seen corresponding path program 6 times [2021-11-07 01:31:49,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:49,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077571444] [2021-11-07 01:31:49,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 01:31:49,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:49,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:49,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:49,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:31:50,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-07 01:31:50,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:31:50,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:31:50,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:31:50,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:31:50,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:50,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077571444] [2021-11-07 01:31:50,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077571444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:50,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:50,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-07 01:31:50,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427488839] [2021-11-07 01:31:50,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:31:50,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:50,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:31:50,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:31:50,918 INFO L87 Difference]: Start difference. First operand 584 states and 1932 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:31:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:51,794 INFO L93 Difference]: Finished difference Result 1345 states and 4403 transitions. [2021-11-07 01:31:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:31:51,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 30 [2021-11-07 01:31:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:51,806 INFO L225 Difference]: With dead ends: 1345 [2021-11-07 01:31:51,806 INFO L226 Difference]: Without dead ends: 1328 [2021-11-07 01:31:51,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:31:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-07 01:31:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 570. [2021-11-07 01:31:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.2618629173989455) internal successors, (1856), 569 states have internal predecessors, (1856), 0 states have call successors, (0), 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 01:31:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1856 transitions. [2021-11-07 01:31:51,837 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1856 transitions. Word has length 30 [2021-11-07 01:31:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:51,837 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1856 transitions. [2021-11-07 01:31:51,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:31:51,838 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1856 transitions. [2021-11-07 01:31:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:31:51,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:51,840 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] [2021-11-07 01:31:51,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:52,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:52,053 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:31:52,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash -418419653, now seen corresponding path program 1 times [2021-11-07 01:31:52,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:52,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199205323] [2021-11-07 01:31:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:52,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:52,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:52,055 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:52,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fceb9e0d-0f57-4267-bf0b-5030951f5888/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:31:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:52,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 01:31:52,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:53,038 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-11-07 01:31:53,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-11-07 01:31:53,835 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 01:31:53,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-07 01:31:53,987 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-07 01:31:53,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 60 [2021-11-07 01:31:54,272 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-07 01:31:54,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 68 [2021-11-07 01:31:55,964 INFO L354 Elim1Store]: treesize reduction 583, result has 12.2 percent of original size [2021-11-07 01:31:55,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 386 treesize of output 208 [2021-11-07 01:31:58,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:31:59,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:59,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:31:59,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:32:01,164 INFO L354 Elim1Store]: treesize reduction 5177, result has 1.8 percent of original size [2021-11-07 01:32:01,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 13 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 206 case distinctions, treesize of input 588 treesize of output 332 [2021-11-07 01:32:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:05,651 INFO L328 TraceCheckSpWp]: Computing backward predicates...