./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.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_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/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_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/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_4c35401c-d8a9-4811-8e99-69edf554a660/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 00da94b849f1323353b7201f7db689ee0a1da0f527f4deeb28edf4663c619d1a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:45:48,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:45:48,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:45:48,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:45:48,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:45:48,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:45:48,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:45:48,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:45:48,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:45:48,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:45:48,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:45:48,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:45:48,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:45:48,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:45:48,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:45:48,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:45:48,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:45:48,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:45:48,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:45:48,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:45:48,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:45:48,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:45:48,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:45:48,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:45:48,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:45:48,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:45:48,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:45:48,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:45:48,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:45:48,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:45:48,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:45:48,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:45:48,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:45:48,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:45:48,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:45:48,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:45:48,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:45:48,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:45:48,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:45:48,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:45:48,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:45:48,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:45:48,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:45:48,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:45:48,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:45:49,000 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:45:49,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:45:49,000 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:45:49,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:45:49,001 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:45:49,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:45:49,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:45:49,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:45:49,002 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:45:49,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:45:49,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:45:49,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:45:49,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:45:49,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:45:49,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:45:49,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:45:49,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:45:49,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:45:49,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:45:49,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:45:49,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:45:49,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:45:49,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:45:49,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:45:49,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:45:49,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:45:49,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:45:49,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:49,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:45:49,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:45:49,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:45:49,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:45:49,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:45:49,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:45:49,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:45:49,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:45:49,009 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_4c35401c-d8a9-4811-8e99-69edf554a660/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00da94b849f1323353b7201f7db689ee0a1da0f527f4deeb28edf4663c619d1a [2021-11-07 01:45:49,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:45:49,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:45:49,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:45:49,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:45:49,311 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:45:49,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-07 01:45:49,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/aa1d6e3fe/3ed56ff69a464f47bb21f55061be48d1/FLAGa53415e11 [2021-11-07 01:45:49,855 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:45:49,855 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-07 01:45:49,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/aa1d6e3fe/3ed56ff69a464f47bb21f55061be48d1/FLAGa53415e11 [2021-11-07 01:45:50,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/aa1d6e3fe/3ed56ff69a464f47bb21f55061be48d1 [2021-11-07 01:45:50,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:45:50,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:45:50,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:50,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:45:50,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:45:50,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:50" (1/1) ... [2021-11-07 01:45:50,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75932903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:50, skipping insertion in model container [2021-11-07 01:45:50,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:50" (1/1) ... [2021-11-07 01:45:50,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:50,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:50,562 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_4c35401c-d8a9-4811-8e99-69edf554a660/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2818,2831] [2021-11-07 01:45:50,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:50,580 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:45:50,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f5ea5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:50, skipping insertion in model container [2021-11-07 01:45:50,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:50,581 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:45:50,583 INFO L168 Benchmark]: Toolchain (without parser) took 348.79 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 73.0 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:45:50,584 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 98.6 MB. Free memory was 68.4 MB in the beginning and 68.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:45:50,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.74 ms. Allocated memory is still 98.6 MB. Free memory was 61.8 MB in the beginning and 73.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:45:50,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 98.6 MB. Free memory was 68.4 MB in the beginning and 68.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.74 ms. Allocated memory is still 98.6 MB. Free memory was 61.8 MB in the beginning and 73.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: 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_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/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_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/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_4c35401c-d8a9-4811-8e99-69edf554a660/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 00da94b849f1323353b7201f7db689ee0a1da0f527f4deeb28edf4663c619d1a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:45:52,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:45:52,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:45:52,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:45:52,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:45:52,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:45:52,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:45:52,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:45:52,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:45:52,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:45:52,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:45:52,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:45:52,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:45:52,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:45:52,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:45:52,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:45:52,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:45:52,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:45:52,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:45:52,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:45:52,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:45:52,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:45:52,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:45:52,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:45:52,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:45:52,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:45:52,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:45:52,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:45:52,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:45:52,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:45:52,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:45:52,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:45:52,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:45:52,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:45:52,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:45:52,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:45:52,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:45:52,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:45:52,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:45:52,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:45:52,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:45:52,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:45:52,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:45:52,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:45:52,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:45:52,838 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:45:52,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:45:52,839 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:45:52,839 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:45:52,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:45:52,839 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:45:52,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:45:52,842 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:45:52,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:45:52,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:45:52,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:45:52,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:45:52,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:45:52,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:45:52,843 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:45:52,843 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:45:52,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:45:52,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:45:52,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:45:52,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:45:52,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:45:52,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:45:52,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:45:52,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:52,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:45:52,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:45:52,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:45:52,846 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:45:52,846 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:52,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:45:52,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:45:52,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:45:52,847 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_4c35401c-d8a9-4811-8e99-69edf554a660/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00da94b849f1323353b7201f7db689ee0a1da0f527f4deeb28edf4663c619d1a [2021-11-07 01:45:53,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:45:53,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:45:53,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:45:53,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:45:53,290 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:45:53,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-07 01:45:53,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/ddbf71696/daafdd81f73f42a9bb5bdb1113e5feb0/FLAG07a1110da [2021-11-07 01:45:53,896 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:45:53,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-07 01:45:53,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/ddbf71696/daafdd81f73f42a9bb5bdb1113e5feb0/FLAG07a1110da [2021-11-07 01:45:54,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/data/ddbf71696/daafdd81f73f42a9bb5bdb1113e5feb0 [2021-11-07 01:45:54,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:45:54,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:45:54,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:54,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:45:54,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:45:54,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e084c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54, skipping insertion in model container [2021-11-07 01:45:54,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:54,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:54,641 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_4c35401c-d8a9-4811-8e99-69edf554a660/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2818,2831] [2021-11-07 01:45:54,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:54,703 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:45:54,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:54,725 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_4c35401c-d8a9-4811-8e99-69edf554a660/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2818,2831] [2021-11-07 01:45:54,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:54,737 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:45:54,764 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_4c35401c-d8a9-4811-8e99-69edf554a660/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2818,2831] [2021-11-07 01:45:54,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:54,787 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:45:54,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54 WrapperNode [2021-11-07 01:45:54,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:54,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:54,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:45:54,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:45:54,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:54,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:45:54,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:45:54,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:45:54,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:45:54,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:45:54,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:45:54,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:45:54,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (1/1) ... [2021-11-07 01:45:54,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:45:54,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:45:54,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:45:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:45:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:45:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:45:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:45:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:45:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:45:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:45:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:45:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:45:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:45:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:45:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:45:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:45:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:45:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:45:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:45:54,971 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:45:56,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:45:56,275 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-07 01:45:56,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:56 BoogieIcfgContainer [2021-11-07 01:45:56,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:45:56,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:45:56,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:45:56,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:45:56,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:45:54" (1/3) ... [2021-11-07 01:45:56,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebeb11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:56, skipping insertion in model container [2021-11-07 01:45:56,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54" (2/3) ... [2021-11-07 01:45:56,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebeb11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:56, skipping insertion in model container [2021-11-07 01:45:56,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:56" (3/3) ... [2021-11-07 01:45:56,285 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2021-11-07 01:45:56,290 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:45:56,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:45:56,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:45:56,291 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:45:56,330 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,330 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,330 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,330 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,331 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,331 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,332 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,332 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,333 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,334 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,334 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,334 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,335 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,335 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,337 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,351 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,352 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,352 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,352 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,352 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,352 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,353 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,353 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,353 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,353 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,353 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,353 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,355 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,356 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,358 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,360 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,361 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,361 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,361 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,362 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,362 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,363 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,363 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,363 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,363 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,364 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,364 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,364 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,364 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,366 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,367 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,367 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,368 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,368 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,372 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,372 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,376 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,379 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,379 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,380 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,380 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:45:56,387 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-07 01:45:56,432 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:45:56,439 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:45:56,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:45:56,458 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:45:56,468 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 251 transitions, 526 flow [2021-11-07 01:45:56,471 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 251 transitions, 526 flow [2021-11-07 01:45:56,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 251 transitions, 526 flow [2021-11-07 01:45:56,569 INFO L129 PetriNetUnfolder]: 25/248 cut-off events. [2021-11-07 01:45:56,569 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 01:45:56,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 25/248 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 203 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 210. Up to 3 conditions per place. [2021-11-07 01:45:56,580 INFO L116 LiptonReduction]: Number of co-enabled transitions 2634 [2021-11-07 01:46:36,680 INFO L131 LiptonReduction]: Checked pairs total: 4541 [2021-11-07 01:46:36,680 INFO L133 LiptonReduction]: Total number of compositions: 269 [2021-11-07 01:46:36,696 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 39 transitions, 102 flow [2021-11-07 01:46:36,740 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:46:36,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:36,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:36,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2068162294, now seen corresponding path program 1 times [2021-11-07 01:46:36,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:36,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504649278] [2021-11-07 01:46:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:36,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:36,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:36,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:46:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:36,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:46:37,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:37,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:37,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:37,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504649278] [2021-11-07 01:46:37,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504649278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:37,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:37,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-11-07 01:46:37,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500618468] [2021-11-07 01:46:37,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:46:37,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:46:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:46:37,358 INFO L87 Difference]: Start difference. First operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 0 states have call successors, (0), 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 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:37,813 INFO L93 Difference]: Finished difference Result 264 states and 923 transitions. [2021-11-07 01:46:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:46:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 22 [2021-11-07 01:46:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:37,838 INFO L225 Difference]: With dead ends: 264 [2021-11-07 01:46:37,838 INFO L226 Difference]: Without dead ends: 264 [2021-11-07 01:46:37,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:46:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-07 01:46:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-07 01:46:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.5095057034220534) internal successors, (923), 263 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 923 transitions. [2021-11-07 01:46:37,934 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 923 transitions. Word has length 22 [2021-11-07 01:46:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:37,935 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 923 transitions. [2021-11-07 01:46:37,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 923 transitions. [2021-11-07 01:46:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:46:37,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:37,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:37,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:38,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:38,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1539865720, now seen corresponding path program 1 times [2021-11-07 01:46:38,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:38,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903113108] [2021-11-07 01:46:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:38,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:38,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:38,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:46:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:38,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:46:38,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:38,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:38,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:38,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903113108] [2021-11-07 01:46:38,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903113108] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:38,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [339633350] [2021-11-07 01:46:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:38,737 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:38,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:38,745 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:38,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:46:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:39,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:46:39,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:39,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:39,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [339633350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:39,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348546803] [2021-11-07 01:46:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:39,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:46:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:46:39,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:46:39,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:46:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:39,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:46:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:39,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:46:39,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348546803] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:46:39,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-11-07 01:46:39,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4, 4, 3] total 15 [2021-11-07 01:46:39,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808531706] [2021-11-07 01:46:39,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:46:39,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:46:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:46:39,736 INFO L87 Difference]: Start difference. First operand 264 states and 923 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:40,231 INFO L93 Difference]: Finished difference Result 604 states and 2132 transitions. [2021-11-07 01:46:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:46:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 01:46:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:40,254 INFO L225 Difference]: With dead ends: 604 [2021-11-07 01:46:40,254 INFO L226 Difference]: Without dead ends: 604 [2021-11-07 01:46:40,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:46:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-07 01:46:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 438. [2021-11-07 01:46:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.51487414187643) internal successors, (1536), 437 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1536 transitions. [2021-11-07 01:46:40,347 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1536 transitions. Word has length 23 [2021-11-07 01:46:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:40,348 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1536 transitions. [2021-11-07 01:46:40,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1536 transitions. [2021-11-07 01:46:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:46:40,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:40,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:40,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:40,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:40,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:46:40,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:40,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash -357184042, now seen corresponding path program 1 times [2021-11-07 01:46:40,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:40,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911465679] [2021-11-07 01:46:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:40,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:40,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:40,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:40,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:46:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:41,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:46:41,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:41,370 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 01:46:41,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:41,512 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 01:46:41,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:41,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911465679] [2021-11-07 01:46:41,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911465679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:41,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1671087414] [2021-11-07 01:46:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:41,513 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:41,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:41,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:41,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:46:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:41,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:46:41,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:41,978 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 01:46:41,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:42,080 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 01:46:42,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1671087414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:42,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078734740] [2021-11-07 01:46:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:42,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:46:42,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:46:42,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:46:42,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:46:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:42,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:46:42,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:42,449 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 01:46:42,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:42,548 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 01:46:42,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078734740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:42,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:46:42,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 15 [2021-11-07 01:46:42,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396316627] [2021-11-07 01:46:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:46:42,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:46:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:46:42,551 INFO L87 Difference]: Start difference. First operand 438 states and 1536 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:46,103 INFO L93 Difference]: Finished difference Result 1086 states and 3896 transitions. [2021-11-07 01:46:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:46:46,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 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 24 [2021-11-07 01:46:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:46,116 INFO L225 Difference]: With dead ends: 1086 [2021-11-07 01:46:46,116 INFO L226 Difference]: Without dead ends: 1086 [2021-11-07 01:46:46,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:46:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-07 01:46:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 506. [2021-11-07 01:46:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 3.5722772277227723) internal successors, (1804), 505 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1804 transitions. [2021-11-07 01:46:46,153 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 1804 transitions. Word has length 24 [2021-11-07 01:46:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:46,153 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 1804 transitions. [2021-11-07 01:46:46,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1804 transitions. [2021-11-07 01:46:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:46:46,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:46,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:46,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:46,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 01:46:46,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:46:46,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:46,763 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2120433774, now seen corresponding path program 1 times [2021-11-07 01:46:46,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:46,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967825336] [2021-11-07 01:46:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:46,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:46,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:46,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:46:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:47,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:46:47,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:47,622 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-07 01:46:47,622 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 8 new quantified variables, introduced 28 case distinctions, treesize of input 126 treesize of output 252 [2021-11-07 01:46:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:48,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:48,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:48,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967825336] [2021-11-07 01:46:48,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967825336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:48,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:48,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:46:48,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682502040] [2021-11-07 01:46:48,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:46:48,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:46:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:48,846 INFO L87 Difference]: Start difference. First operand 506 states and 1804 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:48,939 INFO L93 Difference]: Finished difference Result 885 states and 3186 transitions. [2021-11-07 01:46:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:46:48,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 01:46:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:48,949 INFO L225 Difference]: With dead ends: 885 [2021-11-07 01:46:48,950 INFO L226 Difference]: Without dead ends: 870 [2021-11-07 01:46:48,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-07 01:46:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 572. [2021-11-07 01:46:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 3.6199649737302977) internal successors, (2067), 571 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 2067 transitions. [2021-11-07 01:46:48,979 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 2067 transitions. Word has length 25 [2021-11-07 01:46:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:48,980 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 2067 transitions. [2021-11-07 01:46:48,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 2067 transitions. [2021-11-07 01:46:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:46:48,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:48,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:49,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:49,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:49,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1780694489, now seen corresponding path program 1 times [2021-11-07 01:46:49,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:49,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173030895] [2021-11-07 01:46:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:49,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:49,204 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:49,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:46:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:49,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:46:49,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:49,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:49,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:49,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173030895] [2021-11-07 01:46:49,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173030895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:49,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:49,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:46:49,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422358740] [2021-11-07 01:46:49,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:46:49,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:46:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:46:49,624 INFO L87 Difference]: Start difference. First operand 572 states and 2067 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:49,966 INFO L93 Difference]: Finished difference Result 756 states and 2622 transitions. [2021-11-07 01:46:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:46:49,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 27 [2021-11-07 01:46:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:49,975 INFO L225 Difference]: With dead ends: 756 [2021-11-07 01:46:49,975 INFO L226 Difference]: Without dead ends: 736 [2021-11-07 01:46:49,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:46:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-07 01:46:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 614. [2021-11-07 01:46:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.5464926590538335) internal successors, (2174), 613 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2174 transitions. [2021-11-07 01:46:50,004 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2174 transitions. Word has length 27 [2021-11-07 01:46:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:50,005 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2174 transitions. [2021-11-07 01:46:50,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2174 transitions. [2021-11-07 01:46:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:46:50,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:50,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:50,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:46:50,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:50,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1780376138, now seen corresponding path program 1 times [2021-11-07 01:46:50,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:50,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616107035] [2021-11-07 01:46:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:50,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:50,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:50,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:46:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:50,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:46:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:46:50,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:46:50,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:50,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616107035] [2021-11-07 01:46:50,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616107035] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:50,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [985734737] [2021-11-07 01:46:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:50,891 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:50,894 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:50,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:46:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:51,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:46:51,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:46:51,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:46:51,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [985734737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:51,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8603442] [2021-11-07 01:46:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:51,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:46:51,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:46:51,640 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:46:51,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:46:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:51,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:46:51,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:52,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8603442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:52,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:46:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 16 [2021-11-07 01:46:52,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306248976] [2021-11-07 01:46:52,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:46:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:46:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:46:52,144 INFO L87 Difference]: Start difference. First operand 614 states and 2174 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:52,879 INFO L93 Difference]: Finished difference Result 702 states and 2461 transitions. [2021-11-07 01:46:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:46:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 28 [2021-11-07 01:46:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:52,887 INFO L225 Difference]: With dead ends: 702 [2021-11-07 01:46:52,887 INFO L226 Difference]: Without dead ends: 686 [2021-11-07 01:46:52,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:46:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-07 01:46:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 612. [2021-11-07 01:46:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.541734860883797) internal successors, (2164), 611 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 2164 transitions. [2021-11-07 01:46:52,915 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 2164 transitions. Word has length 28 [2021-11-07 01:46:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:52,915 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 2164 transitions. [2021-11-07 01:46:52,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 2164 transitions. [2021-11-07 01:46:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:46:52,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:52,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:52,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:53,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-07 01:46:53,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-07 01:46:53,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:53,538 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1477067326, now seen corresponding path program 2 times [2021-11-07 01:46:53,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:53,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343274278] [2021-11-07 01:46:53,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:46:53,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:53,540 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:53,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:46:53,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:46:53,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:46:53,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:46:53,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:54,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:54,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:54,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343274278] [2021-11-07 01:46:54,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343274278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:54,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:54,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:46:54,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915102656] [2021-11-07 01:46:54,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:46:54,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:46:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:46:54,259 INFO L87 Difference]: Start difference. First operand 612 states and 2164 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:55,523 INFO L93 Difference]: Finished difference Result 936 states and 3295 transitions. [2021-11-07 01:46:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:46:55,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-11-07 01:46:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:55,533 INFO L225 Difference]: With dead ends: 936 [2021-11-07 01:46:55,533 INFO L226 Difference]: Without dead ends: 918 [2021-11-07 01:46:55,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:46:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-07 01:46:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 700. [2021-11-07 01:46:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 3.5550786838340485) internal successors, (2485), 699 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 2485 transitions. [2021-11-07 01:46:55,574 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 2485 transitions. Word has length 28 [2021-11-07 01:46:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:55,574 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 2485 transitions. [2021-11-07 01:46:55,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 2485 transitions. [2021-11-07 01:46:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:46:55,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:55,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:55,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:55,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:55,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:46:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1111274767, now seen corresponding path program 1 times [2021-11-07 01:46:55,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:55,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121381859] [2021-11-07 01:46:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:55,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:55,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:55,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:55,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:46:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:56,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:46:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:56,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:56,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:56,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121381859] [2021-11-07 01:46:56,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121381859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:56,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [207058553] [2021-11-07 01:46:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:56,517 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:56,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:56,518 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:56,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:46:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:56,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:46:56,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:57,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:46:57,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [207058553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:57,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019226766] [2021-11-07 01:46:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:57,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:46:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:46:57,285 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:46:57,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 01:46:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:57,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:46:57,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:46:57,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:46:58,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019226766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:58,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:46:58,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 19 [2021-11-07 01:46:58,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674661817] [2021-11-07 01:46:58,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:46:58,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:46:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:46:58,010 INFO L87 Difference]: Start difference. First operand 700 states and 2485 transitions. Second operand has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:02,805 INFO L93 Difference]: Finished difference Result 1006 states and 3543 transitions. [2021-11-07 01:47:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 01:47:02,814 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 01:47:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:02,824 INFO L225 Difference]: With dead ends: 1006 [2021-11-07 01:47:02,824 INFO L226 Difference]: Without dead ends: 968 [2021-11-07 01:47:02,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=323, Invalid=1237, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 01:47:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-07 01:47:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 576. [2021-11-07 01:47:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.4747826086956524) internal successors, (1998), 575 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1998 transitions. [2021-11-07 01:47:02,854 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1998 transitions. Word has length 28 [2021-11-07 01:47:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:02,855 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1998 transitions. [2021-11-07 01:47:02,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1998 transitions. [2021-11-07 01:47:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:47:02,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:02,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:02,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-07 01:47:03,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:03,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:03,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:03,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:47:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -828523920, now seen corresponding path program 3 times [2021-11-07 01:47:03,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:03,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783918881] [2021-11-07 01:47:03,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:47:03,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:03,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:03,475 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:03,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:47:03,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:47:03,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:03,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:47:03,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:47:04,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:47:04,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:04,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783918881] [2021-11-07 01:47:04,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783918881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:04,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:04,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:47:04,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573237782] [2021-11-07 01:47:04,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:47:04,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:47:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:04,217 INFO L87 Difference]: Start difference. First operand 576 states and 1998 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:05,410 INFO L93 Difference]: Finished difference Result 1272 states and 4435 transitions. [2021-11-07 01:47:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:47:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-11-07 01:47:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:05,428 INFO L225 Difference]: With dead ends: 1272 [2021-11-07 01:47:05,428 INFO L226 Difference]: Without dead ends: 1264 [2021-11-07 01:47:05,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:47:05,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-11-07 01:47:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 702. [2021-11-07 01:47:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 3.420827389443652) internal successors, (2398), 701 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2398 transitions. [2021-11-07 01:47:05,480 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2398 transitions. Word has length 28 [2021-11-07 01:47:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:05,481 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 2398 transitions. [2021-11-07 01:47:05,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2398 transitions. [2021-11-07 01:47:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:47:05,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:05,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:05,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:05,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:05,693 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:47:05,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2012344476, now seen corresponding path program 4 times [2021-11-07 01:47:05,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:05,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349502581] [2021-11-07 01:47:05,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:47:05,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:05,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:05,696 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:05,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:47:06,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:47:06,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:06,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:47:06,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:47:06,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:47:06,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:06,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349502581] [2021-11-07 01:47:06,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349502581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:06,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052876063] [2021-11-07 01:47:06,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:47:06,542 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:47:06,542 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:47:06,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:47:07,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:47:07,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:07,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:47:07,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:47:07,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:47:07,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1052876063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:07,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664534261] [2021-11-07 01:47:07,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:47:07,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:47:07,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:47:07,420 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:47:07,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:47:07,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:47:07,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:47:07,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:47:08,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:47:08,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664534261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:08,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:47:08,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 19 [2021-11-07 01:47:08,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230425865] [2021-11-07 01:47:08,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:47:08,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:47:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:47:08,124 INFO L87 Difference]: Start difference. First operand 702 states and 2398 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:09,370 INFO L93 Difference]: Finished difference Result 1840 states and 6076 transitions. [2021-11-07 01:47:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:47:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 28 [2021-11-07 01:47:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:09,382 INFO L225 Difference]: With dead ends: 1840 [2021-11-07 01:47:09,382 INFO L226 Difference]: Without dead ends: 1620 [2021-11-07 01:47:09,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:47:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-11-07 01:47:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 694. [2021-11-07 01:47:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.386724386724387) internal successors, (2347), 693 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2347 transitions. [2021-11-07 01:47:09,441 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2347 transitions. Word has length 28 [2021-11-07 01:47:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:09,442 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2347 transitions. [2021-11-07 01:47:09,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2347 transitions. [2021-11-07 01:47:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:47:09,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:09,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:09,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-07 01:47:09,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:09,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 01:47:10,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:10,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:47:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1677265354, now seen corresponding path program 5 times [2021-11-07 01:47:10,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:10,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626448469] [2021-11-07 01:47:10,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:47:10,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:10,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:10,071 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:10,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:47:10,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:47:10,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:10,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:47:10,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:47:10,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:47:10,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:10,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626448469] [2021-11-07 01:47:10,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626448469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:10,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:10,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:47:10,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776379322] [2021-11-07 01:47:10,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:47:10,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:10,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:47:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:10,918 INFO L87 Difference]: Start difference. First operand 694 states and 2347 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:12,276 INFO L93 Difference]: Finished difference Result 880 states and 2980 transitions. [2021-11-07 01:47:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:47:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-11-07 01:47:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:12,283 INFO L225 Difference]: With dead ends: 880 [2021-11-07 01:47:12,283 INFO L226 Difference]: Without dead ends: 645 [2021-11-07 01:47:12,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:47:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-11-07 01:47:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 391. [2021-11-07 01:47:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.6205128205128205) internal successors, (1412), 390 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1412 transitions. [2021-11-07 01:47:12,303 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1412 transitions. Word has length 28 [2021-11-07 01:47:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:12,304 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 1412 transitions. [2021-11-07 01:47:12,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1412 transitions. [2021-11-07 01:47:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:47:12,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:12,307 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:12,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:12,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:12,521 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:47:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -393082036, now seen corresponding path program 1 times [2021-11-07 01:47:12,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:12,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763434599] [2021-11-07 01:47:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:12,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:12,523 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:47:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:13,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:47:13,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:47:13,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:47:13,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:13,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763434599] [2021-11-07 01:47:13,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763434599] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:47:13,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:47:13,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-11-07 01:47:13,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759066349] [2021-11-07 01:47:13,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:47:13,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:13,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:47:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:47:13,625 INFO L87 Difference]: Start difference. First operand 391 states and 1412 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:14,068 INFO L93 Difference]: Finished difference Result 465 states and 1680 transitions. [2021-11-07 01:47:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:47:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 32 [2021-11-07 01:47:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:14,082 INFO L225 Difference]: With dead ends: 465 [2021-11-07 01:47:14,083 INFO L226 Difference]: Without dead ends: 445 [2021-11-07 01:47:14,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:47:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-07 01:47:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 427. [2021-11-07 01:47:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 3.5305164319248825) internal successors, (1504), 426 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1504 transitions. [2021-11-07 01:47:14,099 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1504 transitions. Word has length 32 [2021-11-07 01:47:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:14,100 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 1504 transitions. [2021-11-07 01:47:14,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1504 transitions. [2021-11-07 01:47:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:47:14,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:14,103 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:14,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:14,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:14,317 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:47:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 958844276, now seen corresponding path program 2 times [2021-11-07 01:47:14,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:14,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690338375] [2021-11-07 01:47:14,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:47:14,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:14,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:14,319 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:14,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:47:14,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:47:14,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:47:14,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:47:15,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:47:15,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:15,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690338375] [2021-11-07 01:47:15,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690338375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:15,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [422486665] [2021-11-07 01:47:15,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:47:15,337 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:47:15,341 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:47:15,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:47:16,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:47:16,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:16,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:47:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:47:16,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:47:16,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [422486665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:16,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567075898] [2021-11-07 01:47:16,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:47:16,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:47:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:47:16,537 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:47:16,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:47:17,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:47:17,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:47:17,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:47:17,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:47:17,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:47:17,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567075898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:17,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:47:17,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 6] total 20 [2021-11-07 01:47:17,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344998289] [2021-11-07 01:47:17,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:47:17,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:47:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:47:17,548 INFO L87 Difference]: Start difference. First operand 427 states and 1504 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:20,180 INFO L93 Difference]: Finished difference Result 935 states and 3342 transitions. [2021-11-07 01:47:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:47:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 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 32 [2021-11-07 01:47:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:20,189 INFO L225 Difference]: With dead ends: 935 [2021-11-07 01:47:20,189 INFO L226 Difference]: Without dead ends: 935 [2021-11-07 01:47:20,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:47:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-07 01:47:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 355. [2021-11-07 01:47:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 3.5028248587570623) internal successors, (1240), 354 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1240 transitions. [2021-11-07 01:47:20,209 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1240 transitions. Word has length 32 [2021-11-07 01:47:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:20,210 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 1240 transitions. [2021-11-07 01:47:20,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1240 transitions. [2021-11-07 01:47:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:47:20,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:20,212 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:20,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-07 01:47:20,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-07 01:47:20,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:20,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:20,828 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:47:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash 63621431, now seen corresponding path program 1 times [2021-11-07 01:47:20,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:20,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16506095] [2021-11-07 01:47:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:20,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:20,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:20,830 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:20,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:47:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:47:22,008 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:47:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:47:22,940 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:47:22,941 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:47:22,942 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:47:22,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 01:47:22,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 01:47:22,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 01:47:22,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:23,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:23,166 INFO L731 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:23,171 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 01:47:23,171 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:47:23,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:47:23 BasicIcfg [2021-11-07 01:47:23,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:47:23,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:47:23,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:47:23,343 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:47:23,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:56" (3/4) ... [2021-11-07 01:47:23,346 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:47:23,443 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c35401c-d8a9-4811-8e99-69edf554a660/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:47:23,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:47:23,445 INFO L168 Benchmark]: Toolchain (without parser) took 89105.82 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 56.0 MB in the beginning and 36.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,445 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:47:23,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.72 ms. Allocated memory is still 77.6 MB. Free memory was 55.8 MB in the beginning and 57.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.33 ms. Allocated memory is still 77.6 MB. Free memory was 56.8 MB in the beginning and 54.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,446 INFO L168 Benchmark]: Boogie Preprocessor took 43.33 ms. Allocated memory is still 77.6 MB. Free memory was 54.6 MB in the beginning and 52.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,447 INFO L168 Benchmark]: RCFGBuilder took 1390.76 ms. Allocated memory is still 77.6 MB. Free memory was 52.4 MB in the beginning and 39.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,447 INFO L168 Benchmark]: TraceAbstraction took 87063.05 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 38.9 MB in the beginning and 32.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,448 INFO L168 Benchmark]: Witness Printer took 100.67 ms. Allocated memory is still 98.6 MB. Free memory was 32.7 MB in the beginning and 36.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:23,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.72 ms. Allocated memory is still 77.6 MB. Free memory was 55.8 MB in the beginning and 57.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.33 ms. Allocated memory is still 77.6 MB. Free memory was 56.8 MB in the beginning and 54.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.33 ms. Allocated memory is still 77.6 MB. Free memory was 54.6 MB in the beginning and 52.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1390.76 ms. Allocated memory is still 77.6 MB. Free memory was 52.4 MB in the beginning and 39.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 87063.05 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 38.9 MB in the beginning and 32.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 100.67 ms. Allocated memory is still 98.6 MB. Free memory was 32.7 MB in the beginning and 36.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.2s, 236 PlacesBefore, 41 PlacesAfterwards, 251 TransitionsBefore, 39 TransitionsAfterwards, 2634 CoEnabledTransitionPairs, 8 FixpointIterations, 158 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 45 TrivialYvCompositions, 11 ConcurrentYvCompositions, 17 ChoiceCompositions, 269 TotalNumberOfCompositions, 4541 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3192, positive: 3056, positive conditional: 0, positive unconditional: 3056, negative: 136, negative conditional: 0, negative unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1772, positive: 1732, positive conditional: 0, positive unconditional: 1732, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1772, positive: 1732, positive conditional: 0, positive unconditional: 1732, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3507, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3507, negative conditional: 0, negative unconditional: 3507, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3192, positive: 1324, positive conditional: 0, positive unconditional: 1324, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 1772, unknown conditional: 0, unknown unconditional: 1772] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 114]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int *A, *B, *C; [L42] 0 int maxa, maxb, maxc, N, p; [L91] 0 pthread_t t1, t2, t3; [L93] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L123] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L124] 0 int i = 0; VAL [A={0:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND TRUE 0 i < size [L125] 0 arr[i] = __VERIFIER_nondet_int() [L124] 0 i++ VAL [A={0:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND TRUE 0 i < size [L125] 0 arr[i] = __VERIFIER_nondet_int() [L124] 0 i++ VAL [A={0:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND FALSE 0 !(i < size) [L127] 0 return arr; [L95] 0 A = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L123] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L124] 0 int i = 0; VAL [A={1:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND TRUE 0 i < size [L125] 0 arr[i] = __VERIFIER_nondet_int() [L124] 0 i++ VAL [A={1:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND TRUE 0 i < size [L125] 0 arr[i] = __VERIFIER_nondet_int() [L124] 0 i++ VAL [A={1:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND FALSE 0 !(i < size) [L127] 0 return arr; [L96] 0 B = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L123] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L124] 0 int i = 0; VAL [A={1:0}, B={3:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND TRUE 0 i < size [L125] 0 arr[i] = __VERIFIER_nondet_int() [L124] 0 i++ VAL [A={1:0}, B={3:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND TRUE 0 i < size [L125] 0 arr[i] = __VERIFIER_nondet_int() [L124] 0 i++ VAL [A={1:0}, B={3:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L124] COND FALSE 0 !(i < size) [L127] 0 return arr; [L97] 0 C = create_fresh_int_array(N) [L99] 0 p = 1 [L101] EXPR 0 A[0] [L101] 0 maxa = A[0] [L102] EXPR 0 B[0] [L102] 0 maxb = B[0] [L103] EXPR 0 A[0] [L103] EXPR 0 B[0] [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L133] 0 return a + b; [L103] 0 maxc = plus(A[0], B[0]) [L106] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={1:0}, B={3:0}, C={2:0}, maxa=717600107, maxb=-670644959, maxc=46955148, N=2, p=1] [L107] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={1:0}, B={3:0}, C={2:0}, maxa=717600107, maxb=-670644959, maxc=46955148, N=2, p=1] [L61] 2 int i=1; VAL [A={1:0}, B={3:0}, C={2:0}, maxa=717600107, maxb=-670644959, maxc=46955148, N=2, p=1] [L61] COND TRUE 2 i