./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-2.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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/unroll-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:23,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:23,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:23,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:23,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:23,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:23,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:23,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:23,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:23,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:23,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:23,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:23,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:23,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:23,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:23,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:23,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:23,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:23,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:23,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:23,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:23,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:23,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:23,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:23,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:23,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:23,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:23,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:23,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:23,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:23,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:23,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:23,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:23,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:23,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:23,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:23,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:23,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:23,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:23,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:23,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:23,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:21:23,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:23,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:23,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:23,841 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:23,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:23,841 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:23,842 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:21:23,842 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:23,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:23,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:21:23,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:21:23,852 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:23,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:21:23,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:21:23,853 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:21:23,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:23,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:23,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:21:23,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:23,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:23,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:23,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:23,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:23,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:23,856 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:23,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:23,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:23,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:23,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:23,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:23,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:23,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:23,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:23,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:23,860 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:21:23,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:21:23,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:23,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:23,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:23,861 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf [2021-11-07 02:21:24,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:24,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:24,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:24,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:24,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:24,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/unroll-2.wvr.c [2021-11-07 02:21:24,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/188e075bc/1365bcae152e4907a94e015ce797dfb0/FLAGa43bfc047 [2021-11-07 02:21:25,030 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:25,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/sv-benchmarks/c/weaver/unroll-2.wvr.c [2021-11-07 02:21:25,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/188e075bc/1365bcae152e4907a94e015ce797dfb0/FLAGa43bfc047 [2021-11-07 02:21:25,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/188e075bc/1365bcae152e4907a94e015ce797dfb0 [2021-11-07 02:21:25,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:25,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:25,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:25,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:25,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:25,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:25" (1/1) ... [2021-11-07 02:21:25,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6a4f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:25, skipping insertion in model container [2021-11-07 02:21:25,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:25" (1/1) ... [2021-11-07 02:21:25,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:25,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:25,699 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/sv-benchmarks/c/weaver/unroll-2.wvr.c[2428,2441] [2021-11-07 02:21:25,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:25,730 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 02:21:25,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60773e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:25, skipping insertion in model container [2021-11-07 02:21:25,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:25,732 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:21:25,740 INFO L168 Benchmark]: Toolchain (without parser) took 381.69 ms. Allocated memory is still 98.6 MB. Free memory was 56.6 MB in the beginning and 73.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:25,742 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:21:25,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.14 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 73.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:25,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.14 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 73.8 MB in the end (delta: -17.5 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: 97]: 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/unroll-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:28,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:28,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:28,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:28,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:28,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:28,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:28,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:28,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:28,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:28,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:28,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:28,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:28,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:28,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:28,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:28,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:28,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:28,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:28,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:28,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:28,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:28,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:28,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:28,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:28,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:28,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:28,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:28,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:28,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:28,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:28,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:28,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:28,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:28,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:28,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:28,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:28,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:28,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:28,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:28,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:28,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:21:28,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:28,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:28,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:28,769 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:28,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:28,771 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:28,772 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:28,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:28,772 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:28,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:28,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:28,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:28,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:28,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:28,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:28,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:28,778 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:28,778 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:21:28,779 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:21:28,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:28,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:28,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:28,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:28,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:28,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:21:28,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:28,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:28,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:28,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:28,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:28,783 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:21:28,783 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:28,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:28,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:28,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:28,785 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf [2021-11-07 02:21:29,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:29,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:29,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:29,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:29,316 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:29,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/unroll-2.wvr.c [2021-11-07 02:21:29,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/1db84bcf4/fa07dd9240d54e569e74ec11fed9287b/FLAG4a1f6656e [2021-11-07 02:21:30,055 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:30,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/sv-benchmarks/c/weaver/unroll-2.wvr.c [2021-11-07 02:21:30,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/1db84bcf4/fa07dd9240d54e569e74ec11fed9287b/FLAG4a1f6656e [2021-11-07 02:21:30,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/data/1db84bcf4/fa07dd9240d54e569e74ec11fed9287b [2021-11-07 02:21:30,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:30,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:30,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:30,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:30,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:30,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:30,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102b6a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30, skipping insertion in model container [2021-11-07 02:21:30,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:30,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:30,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:30,747 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/sv-benchmarks/c/weaver/unroll-2.wvr.c[2428,2441] [2021-11-07 02:21:30,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:30,816 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:21:30,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:30,850 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/sv-benchmarks/c/weaver/unroll-2.wvr.c[2428,2441] [2021-11-07 02:21:30,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:30,885 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:21:30,937 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_21c8f94a-128a-42cb-af0a-d4b3f33e7793/sv-benchmarks/c/weaver/unroll-2.wvr.c[2428,2441] [2021-11-07 02:21:30,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:30,963 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:21:30,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30 WrapperNode [2021-11-07 02:21:30,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:30,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:30,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:21:30,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:21:30,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:31,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:21:31,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:21:31,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:21:31,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:21:31,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:21:31,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:21:31,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:21:31,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (1/1) ... [2021-11-07 02:21:31,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:31,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:21:31,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 02:21:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 02:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 02:21:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 02:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:21:31,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:21:31,220 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 02:21:31,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:21:31,800 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-11-07 02:21:31,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:31 BoogieIcfgContainer [2021-11-07 02:21:31,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:21:31,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:21:31,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:21:31,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:21:31,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:21:30" (1/3) ... [2021-11-07 02:21:31,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c3aa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:31, skipping insertion in model container [2021-11-07 02:21:31,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:30" (2/3) ... [2021-11-07 02:21:31,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c3aa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:31, skipping insertion in model container [2021-11-07 02:21:31,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:31" (3/3) ... [2021-11-07 02:21:31,814 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2021-11-07 02:21:31,821 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 02:21:31,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:21:31,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:21:31,822 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 02:21:31,863 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,864 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,864 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,865 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,865 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,866 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,867 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,868 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,868 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,869 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,869 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,870 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,870 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,871 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,871 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,871 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,872 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,874 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,875 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,876 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,876 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,876 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,878 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,878 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,879 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,879 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,879 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,880 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,881 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,881 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,881 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,882 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,882 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,883 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,883 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,883 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,884 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,884 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,884 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,885 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,885 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,885 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,888 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,888 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,888 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,889 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,890 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,890 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,892 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,892 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,892 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,893 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,894 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,894 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,894 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,895 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,895 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,898 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,898 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,899 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,900 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,905 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,907 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,914 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,915 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,915 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,915 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:21:31,922 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 02:21:31,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:21:31,998 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 02:21:31,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 02:21:32,018 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 02:21:32,031 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 147 transitions, 310 flow [2021-11-07 02:21:32,035 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 147 transitions, 310 flow [2021-11-07 02:21:32,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 147 transitions, 310 flow [2021-11-07 02:21:32,181 INFO L129 PetriNetUnfolder]: 14/145 cut-off events. [2021-11-07 02:21:32,181 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 02:21:32,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 14/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2021-11-07 02:21:32,197 INFO L116 LiptonReduction]: Number of co-enabled transitions 1764 [2021-11-07 02:21:49,204 INFO L131 LiptonReduction]: Checked pairs total: 1848 [2021-11-07 02:21:49,205 INFO L133 LiptonReduction]: Total number of compositions: 164 [2021-11-07 02:21:49,217 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 20 transitions, 56 flow [2021-11-07 02:21:49,233 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:21:49,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:49,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:49,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash -389645385, now seen corresponding path program 1 times [2021-11-07 02:21:49,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:49,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732474775] [2021-11-07 02:21:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:49,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:49,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:49,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:49,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:21:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:49,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:21:49,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:49,740 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 02:21:49,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:49,854 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 02:21:49,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:49,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732474775] [2021-11-07 02:21:49,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732474775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:49,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:49,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 02:21:49,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787437791] [2021-11-07 02:21:49,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:49,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:49,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:49,886 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:21:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:49,942 INFO L93 Difference]: Finished difference Result 62 states and 136 transitions. [2021-11-07 02:21:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:49,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 14 [2021-11-07 02:21:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:49,957 INFO L225 Difference]: With dead ends: 62 [2021-11-07 02:21:49,958 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 02:21:49,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 02:21:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-07 02:21:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.25) internal successors, (126), 56 states have internal predecessors, (126), 0 states have call successors, (0), 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 02:21:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 126 transitions. [2021-11-07 02:21:50,005 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 126 transitions. Word has length 14 [2021-11-07 02:21:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:50,007 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 126 transitions. [2021-11-07 02:21:50,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:21:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 126 transitions. [2021-11-07 02:21:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 02:21:50,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:50,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:50,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:50,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:50,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash -692824772, now seen corresponding path program 1 times [2021-11-07 02:21:50,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:50,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428443153] [2021-11-07 02:21:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:50,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:50,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:50,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:50,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:21:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:21:50,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:50,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:50,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:50,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428443153] [2021-11-07 02:21:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428443153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:50,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:21:50,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608230829] [2021-11-07 02:21:50,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:50,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:50,567 INFO L87 Difference]: Start difference. First operand 57 states and 126 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 02:21:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:50,598 INFO L93 Difference]: Finished difference Result 58 states and 127 transitions. [2021-11-07 02:21:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 15 [2021-11-07 02:21:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:50,611 INFO L225 Difference]: With dead ends: 58 [2021-11-07 02:21:50,612 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 02:21:50,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 02:21:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-07 02:21:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 57 states have internal predecessors, (127), 0 states have call successors, (0), 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 02:21:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 127 transitions. [2021-11-07 02:21:50,628 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 127 transitions. Word has length 15 [2021-11-07 02:21:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:50,628 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 127 transitions. [2021-11-07 02:21:50,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 02:21:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 127 transitions. [2021-11-07 02:21:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:21:50,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:50,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:50,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:50,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:50,846 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:50,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1049584602, now seen corresponding path program 1 times [2021-11-07 02:21:50,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:50,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178505928] [2021-11-07 02:21:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:50,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:50,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:50,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:50,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:21:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:50,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:21:50,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:51,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:51,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:51,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178505928] [2021-11-07 02:21:51,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178505928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:51,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329118638] [2021-11-07 02:21:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:51,650 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:51,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:51,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:21:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:51,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:51,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:51,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:52,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [329118638] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 02:21:52,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:21:52,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 4] total 11 [2021-11-07 02:21:52,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872240089] [2021-11-07 02:21:52,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:52,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:21:52,226 INFO L87 Difference]: Start difference. First operand 58 states and 127 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:21:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:52,290 INFO L93 Difference]: Finished difference Result 86 states and 183 transitions. [2021-11-07 02:21:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:52,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-07 02:21:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:52,296 INFO L225 Difference]: With dead ends: 86 [2021-11-07 02:21:52,296 INFO L226 Difference]: Without dead ends: 86 [2021-11-07 02:21:52,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:21:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-07 02:21:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2021-11-07 02:21:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.3442622950819674) internal successors, (143), 61 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:21:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 143 transitions. [2021-11-07 02:21:52,323 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 143 transitions. Word has length 16 [2021-11-07 02:21:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:52,324 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 143 transitions. [2021-11-07 02:21:52,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:21:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 143 transitions. [2021-11-07 02:21:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:21:52,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:52,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:52,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:52,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:52,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:52,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1878735187, now seen corresponding path program 1 times [2021-11-07 02:21:52,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:52,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137169990] [2021-11-07 02:21:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:52,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:52,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:52,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:21:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:52,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:52,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:53,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:53,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:53,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137169990] [2021-11-07 02:21:53,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137169990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:53,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:53,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:21:53,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148747815] [2021-11-07 02:21:53,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:53,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:21:53,099 INFO L87 Difference]: Start difference. First operand 62 states and 143 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 02:21:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:53,200 INFO L93 Difference]: Finished difference Result 78 states and 172 transitions. [2021-11-07 02:21:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 16 [2021-11-07 02:21:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:53,204 INFO L225 Difference]: With dead ends: 78 [2021-11-07 02:21:53,204 INFO L226 Difference]: Without dead ends: 74 [2021-11-07 02:21:53,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:21:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-07 02:21:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2021-11-07 02:21:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.3492063492063493) internal successors, (148), 63 states have internal predecessors, (148), 0 states have call successors, (0), 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 02:21:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 148 transitions. [2021-11-07 02:21:53,214 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 148 transitions. Word has length 16 [2021-11-07 02:21:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:53,215 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 148 transitions. [2021-11-07 02:21:53,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 02:21:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 148 transitions. [2021-11-07 02:21:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:21:53,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:53,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:53,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:53,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:53,418 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash 906681990, now seen corresponding path program 2 times [2021-11-07 02:21:53,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:53,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590246331] [2021-11-07 02:21:53,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:21:53,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:53,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:53,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:21:53,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:21:53,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:53,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:53,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:53,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:53,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:53,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590246331] [2021-11-07 02:21:53,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590246331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:53,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:53,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:21:53,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941883920] [2021-11-07 02:21:53,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:53,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:21:53,900 INFO L87 Difference]: Start difference. First operand 64 states and 148 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:21:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:54,035 INFO L93 Difference]: Finished difference Result 104 states and 221 transitions. [2021-11-07 02:21:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:21:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 16 [2021-11-07 02:21:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:54,040 INFO L225 Difference]: With dead ends: 104 [2021-11-07 02:21:54,040 INFO L226 Difference]: Without dead ends: 94 [2021-11-07 02:21:54,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:21:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-07 02:21:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2021-11-07 02:21:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.436619718309859) internal successors, (173), 71 states have internal predecessors, (173), 0 states have call successors, (0), 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 02:21:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 173 transitions. [2021-11-07 02:21:54,051 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 173 transitions. Word has length 16 [2021-11-07 02:21:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:54,051 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 173 transitions. [2021-11-07 02:21:54,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:21:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 173 transitions. [2021-11-07 02:21:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:21:54,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:54,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:54,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:54,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:54,270 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1549032535, now seen corresponding path program 2 times [2021-11-07 02:21:54,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:54,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446903828] [2021-11-07 02:21:54,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:21:54,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:54,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:54,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:21:54,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:21:54,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:54,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:21:54,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:54,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:54,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:54,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446903828] [2021-11-07 02:21:54,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446903828] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:54,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458542085] [2021-11-07 02:21:54,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:21:54,846 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:54,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:54,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:21:55,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:21:55,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:55,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:55,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:55,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:55,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1458542085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:55,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:55,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4, 4] total 10 [2021-11-07 02:21:55,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920190551] [2021-11-07 02:21:55,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:21:55,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:55,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:21:55,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:55,486 INFO L87 Difference]: Start difference. First operand 72 states and 173 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 02:21:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:55,593 INFO L93 Difference]: Finished difference Result 98 states and 220 transitions. [2021-11-07 02:21:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:55,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 16 [2021-11-07 02:21:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:55,596 INFO L225 Difference]: With dead ends: 98 [2021-11-07 02:21:55,596 INFO L226 Difference]: Without dead ends: 94 [2021-11-07 02:21:55,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-07 02:21:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2021-11-07 02:21:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.430379746835443) internal successors, (192), 79 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 192 transitions. [2021-11-07 02:21:55,606 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 192 transitions. Word has length 16 [2021-11-07 02:21:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:55,607 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 192 transitions. [2021-11-07 02:21:55,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 02:21:55,607 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 192 transitions. [2021-11-07 02:21:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:21:55,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:55,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:55,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:55,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:56,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:56,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:56,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1983464653, now seen corresponding path program 3 times [2021-11-07 02:21:56,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:56,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196061903] [2021-11-07 02:21:56,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:21:56,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:56,017 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:56,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:21:56,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 02:21:56,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:56,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:21:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:56,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:56,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:56,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196061903] [2021-11-07 02:21:56,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196061903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:56,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1418514447] [2021-11-07 02:21:56,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:21:56,688 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:56,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:56,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:56,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:21:57,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 02:21:57,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:57,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:57,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:57,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:57,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1418514447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:57,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:57,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4, 4] total 9 [2021-11-07 02:21:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934908249] [2021-11-07 02:21:57,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:57,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:57,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:57,305 INFO L87 Difference]: Start difference. First operand 80 states and 192 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:21:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:57,432 INFO L93 Difference]: Finished difference Result 92 states and 209 transitions. [2021-11-07 02:21:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:57,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 16 [2021-11-07 02:21:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:57,435 INFO L225 Difference]: With dead ends: 92 [2021-11-07 02:21:57,436 INFO L226 Difference]: Without dead ends: 82 [2021-11-07 02:21:57,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-07 02:21:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2021-11-07 02:21:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.3582089552238807) internal successors, (158), 67 states have internal predecessors, (158), 0 states have call successors, (0), 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 02:21:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 158 transitions. [2021-11-07 02:21:57,444 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 158 transitions. Word has length 16 [2021-11-07 02:21:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:57,444 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 158 transitions. [2021-11-07 02:21:57,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:21:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 158 transitions. [2021-11-07 02:21:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:21:57,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:57,447 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:57,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:57,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:57,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:57,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash 3759616, now seen corresponding path program 3 times [2021-11-07 02:21:57,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:57,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339415021] [2021-11-07 02:21:57,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:21:57,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:57,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:57,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:21:58,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 02:21:58,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:21:58,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:58,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:58,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:58,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339415021] [2021-11-07 02:21:58,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339415021] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 02:21:58,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 02:21:58,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-07 02:21:58,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207753800] [2021-11-07 02:21:58,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:58,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:58,455 INFO L87 Difference]: Start difference. First operand 68 states and 158 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:21:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:58,619 INFO L93 Difference]: Finished difference Result 82 states and 188 transitions. [2021-11-07 02:21:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:21:58,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-07 02:21:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:58,621 INFO L225 Difference]: With dead ends: 82 [2021-11-07 02:21:58,621 INFO L226 Difference]: Without dead ends: 82 [2021-11-07 02:21:58,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-07 02:21:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2021-11-07 02:21:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.292307692307692) internal successors, (149), 65 states have internal predecessors, (149), 0 states have call successors, (0), 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 02:21:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 149 transitions. [2021-11-07 02:21:58,634 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 149 transitions. Word has length 16 [2021-11-07 02:21:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:58,635 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 149 transitions. [2021-11-07 02:21:58,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:21:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 149 transitions. [2021-11-07 02:21:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 02:21:58,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:58,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:58,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:58,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:58,854 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:21:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash -505254604, now seen corresponding path program 1 times [2021-11-07 02:21:58,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:58,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132818333] [2021-11-07 02:21:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:58,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:58,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:58,856 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:58,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:21:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:59,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:59,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:59,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:59,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:59,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132818333] [2021-11-07 02:21:59,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132818333] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:59,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192526545] [2021-11-07 02:21:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:59,705 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:59,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:59,707 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:59,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:22:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:00,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:22:00,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:00,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:00,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192526545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:00,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511617087] [2021-11-07 02:22:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:00,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:00,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:22:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 02:22:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:00,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:22:00,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:00,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:01,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511617087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:01,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:22:01,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 5, 5] total 14 [2021-11-07 02:22:01,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933965816] [2021-11-07 02:22:01,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:22:01,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:22:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:22:01,028 INFO L87 Difference]: Start difference. First operand 66 states and 149 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 02:22:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:08,996 INFO L93 Difference]: Finished difference Result 138 states and 305 transitions. [2021-11-07 02:22:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 02:22:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 17 [2021-11-07 02:22:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:08,998 INFO L225 Difference]: With dead ends: 138 [2021-11-07 02:22:08,998 INFO L226 Difference]: Without dead ends: 138 [2021-11-07 02:22:08,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-11-07 02:22:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-07 02:22:09,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 84. [2021-11-07 02:22:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.5180722891566263) internal successors, (209), 83 states have internal predecessors, (209), 0 states have call successors, (0), 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 02:22:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 209 transitions. [2021-11-07 02:22:09,006 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 209 transitions. Word has length 17 [2021-11-07 02:22:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:09,007 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 209 transitions. [2021-11-07 02:22:09,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 02:22:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 209 transitions. [2021-11-07 02:22:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 02:22:09,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:09,009 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:09,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:09,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:09,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:09,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:09,619 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 02:22:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash -810893850, now seen corresponding path program 2 times [2021-11-07 02:22:09,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:09,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550996822] [2021-11-07 02:22:09,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:22:09,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:09,621 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:09,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c8f94a-128a-42cb-af0a-d4b3f33e7793/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:22:09,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:22:09,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:22:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:22:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:10,622 INFO L354 Elim1Store]: treesize reduction 228, result has 14.6 percent of original size [2021-11-07 02:22:10,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 313 treesize of output 112 [2021-11-07 02:22:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:11,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:21,561 WARN L207 SmtUtils]: Spent 8.41 s on a formula simplification. DAG size of input: 522 DAG size of output: 108 [2021-11-07 02:22:21,563 INFO L354 Elim1Store]: treesize reduction 1316, result has 14.0 percent of original size [2021-11-07 02:22:21,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 24 new quantified variables, introduced 120 case distinctions, treesize of input 413 treesize of output 348