./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:26:42,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:26:42,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:26:42,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:26:42,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:26:42,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:26:42,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:26:42,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:26:42,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:26:42,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:26:42,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:26:42,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:26:42,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:26:42,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:26:42,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:26:42,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:26:42,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:26:42,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:26:42,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:26:42,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:26:42,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:26:42,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:26:42,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:26:42,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:26:43,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:26:43,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:26:43,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:26:43,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:26:43,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:26:43,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:26:43,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:26:43,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:26:43,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:26:43,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:26:43,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:26:43,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:26:43,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:26:43,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:26:43,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:26:43,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:26:43,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:26:43,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:26:43,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:26:43,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:26:43,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:26:43,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:26:43,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:26:43,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:26:43,070 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:26:43,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:26:43,071 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:26:43,071 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:26:43,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:26:43,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:26:43,079 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:26:43,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:26:43,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:26:43,079 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:26:43,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:26:43,081 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:26:43,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:26:43,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:26:43,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:26:43,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:26:43,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:26:43,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:26:43,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:26:43,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:26:43,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:26:43,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:26:43,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:26:43,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:26:43,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:26:43,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:26:43,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:26:43,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:26:43,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:26:43,087 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:26:43,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:26:43,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:26:43,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:26:43,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:26:43,088 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-11-19 13:26:43,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:26:43,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:26:43,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:26:43,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:26:43,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:26:43,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-19 13:26:43,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/8a66e2395/0744d289757c4de5b9164bd6848154ae/FLAGec8238d5c [2021-11-19 13:26:44,105 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:26:44,105 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-19 13:26:44,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/8a66e2395/0744d289757c4de5b9164bd6848154ae/FLAGec8238d5c [2021-11-19 13:26:44,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/8a66e2395/0744d289757c4de5b9164bd6848154ae [2021-11-19 13:26:44,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:26:44,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:26:44,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:44,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:26:44,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:26:44,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:44" (1/1) ... [2021-11-19 13:26:44,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423e03dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:44, skipping insertion in model container [2021-11-19 13:26:44,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:44" (1/1) ... [2021-11-19 13:26:44,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:26:44,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:26:44,759 WARN L230 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-19 13:26:44,768 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:44,778 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) [2021-11-19 13:26:44,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60ec7c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:44, skipping insertion in model container [2021-11-19 13:26:44,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:44,779 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:26:44,781 INFO L158 Benchmark]: Toolchain (without parser) took 283.96ms. Allocated memory is still 119.5MB. Free memory was 83.6MB in the beginning and 94.3MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:26:44,782 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 92.7MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:26:44,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.27ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 94.3MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:26:44,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 92.7MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.27ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 94.3MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 144]: 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:26:47,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:26:47,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:26:47,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:26:47,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:26:47,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:26:47,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:26:47,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:26:47,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:26:47,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:26:47,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:26:47,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:26:47,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:26:47,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:26:47,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:26:47,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:26:47,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:26:47,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:26:47,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:26:47,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:26:47,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:26:47,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:26:47,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:26:47,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:26:47,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:26:47,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:26:47,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:26:47,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:26:47,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:26:47,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:26:47,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:26:47,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:26:47,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:26:47,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:26:47,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:26:47,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:26:47,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:26:47,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:26:47,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:26:47,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:26:47,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:26:47,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:26:47,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:26:47,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:26:47,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:26:47,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:26:47,190 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:26:47,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:26:47,191 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:26:47,191 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:26:47,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:26:47,192 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:26:47,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:26:47,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:26:47,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:26:47,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:26:47,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:26:47,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:26:47,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:26:47,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:26:47,197 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:26:47,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:26:47,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:26:47,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:26:47,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:26:47,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:26:47,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:26:47,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:26:47,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:26:47,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:26:47,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:26:47,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:26:47,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:26:47,200 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:26:47,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:47,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:26:47,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:26:47,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:26:47,201 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-11-19 13:26:47,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:26:47,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:26:47,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:26:47,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:26:47,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:26:47,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-19 13:26:47,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/0716dc7cd/9b11770cd44646a59ec578d733a70cb5/FLAGc50993eb0 [2021-11-19 13:26:48,334 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:26:48,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-19 13:26:48,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/0716dc7cd/9b11770cd44646a59ec578d733a70cb5/FLAGc50993eb0 [2021-11-19 13:26:48,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/data/0716dc7cd/9b11770cd44646a59ec578d733a70cb5 [2021-11-19 13:26:48,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:26:48,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:26:48,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:48,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:26:48,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:26:48,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:48" (1/1) ... [2021-11-19 13:26:48,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306dc0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:48, skipping insertion in model container [2021-11-19 13:26:48,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:48" (1/1) ... [2021-11-19 13:26:48,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:26:48,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:26:48,908 WARN L230 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-19 13:26:48,917 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:48,928 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:26:48,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:26:48,955 WARN L230 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-19 13:26:48,959 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:48,964 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:26:48,993 WARN L230 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_2a23e7fd-2c3b-4c93-8873-057455a4fba7/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-19 13:26:48,998 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:49,015 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:26:49,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49 WrapperNode [2021-11-19 13:26:49,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:49,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:26:49,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:26:49,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:26:49,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,075 INFO L137 Inliner]: procedures = 28, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 250 [2021-11-19 13:26:49,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:26:49,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:26:49,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:26:49,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:26:49,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:26:49,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:26:49,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:26:49,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:26:49,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (1/1) ... [2021-11-19 13:26:49,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:26:49,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:26:49,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:26:49,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:26:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:26:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:26:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:26:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:26:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 13:26:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 13:26:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 13:26:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 13:26:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 13:26:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 13:26:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 13:26:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 13:26:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:26:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:26:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:26:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:26:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:26:49,214 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:26:49,335 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:26:49,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:26:49,926 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:26:50,131 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:26:50,131 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 13:26:50,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:26:50 BoogieIcfgContainer [2021-11-19 13:26:50,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:26:50,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:26:50,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:26:50,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:26:50,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:26:48" (1/3) ... [2021-11-19 13:26:50,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18982a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:26:50, skipping insertion in model container [2021-11-19 13:26:50,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:49" (2/3) ... [2021-11-19 13:26:50,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18982a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:26:50, skipping insertion in model container [2021-11-19 13:26:50,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:26:50" (3/3) ... [2021-11-19 13:26:50,146 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2021-11-19 13:26:50,152 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:26:50,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:26:50,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:26:50,153 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:26:50,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,208 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,208 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,213 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,214 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,242 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,244 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,244 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,245 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,246 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,248 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,249 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,249 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,249 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,249 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,250 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,250 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,250 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,256 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,257 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,257 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,257 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,257 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,268 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,274 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,274 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,274 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,276 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,276 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,276 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,277 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,277 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,278 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,281 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,281 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:26:50,284 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 13:26:50,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:26:50,351 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 [2021-11-19 13:26:50,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:26:50,372 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:26:50,388 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 216 transitions, 456 flow [2021-11-19 13:26:50,391 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 216 transitions, 456 flow [2021-11-19 13:26:50,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 208 places, 216 transitions, 456 flow [2021-11-19 13:26:50,527 INFO L129 PetriNetUnfolder]: 18/213 cut-off events. [2021-11-19 13:26:50,527 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 13:26:50,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 213 events. 18/213 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 173. Up to 3 conditions per place. [2021-11-19 13:26:50,539 INFO L116 LiptonReduction]: Number of co-enabled transitions 1880 [2021-11-19 13:27:14,352 INFO L131 LiptonReduction]: Checked pairs total: 2739 [2021-11-19 13:27:14,352 INFO L133 LiptonReduction]: Total number of compositions: 220 [2021-11-19 13:27:14,360 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-11-19 13:27:14,381 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:27:14,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:14,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:27:14,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:27:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:14,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1966862538, now seen corresponding path program 1 times [2021-11-19 13:27:14,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:14,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803599548] [2021-11-19 13:27:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:14,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:14,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:14,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:27:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:27:14,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:27:14,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:27:14,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:14,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803599548] [2021-11-19 13:27:14,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803599548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:14,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:14,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:27:14,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929633860] [2021-11-19 13:27:14,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:14,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:27:14,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:27:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:27:14,835 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:14,965 INFO L93 Difference]: Finished difference Result 138 states and 428 transitions. [2021-11-19 13:27:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:27:14,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-19 13:27:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:14,976 INFO L225 Difference]: With dead ends: 138 [2021-11-19 13:27:14,977 INFO L226 Difference]: Without dead ends: 138 [2021-11-19 13:27:14,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:27:14,987 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:14,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:27:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-19 13:27:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-19 13:27:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 3.124087591240876) internal successors, (428), 137 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 428 transitions. [2021-11-19 13:27:15,072 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 428 transitions. Word has length 21 [2021-11-19 13:27:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:15,073 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 428 transitions. [2021-11-19 13:27:15,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 428 transitions. [2021-11-19 13:27:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:27:15,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:15,079 INFO L514 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] [2021-11-19 13:27:15,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:15,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:15,280 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:27:15,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:15,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1088394533, now seen corresponding path program 1 times [2021-11-19 13:27:15,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:15,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509126862] [2021-11-19 13:27:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:15,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:15,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:15,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:27:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:27:15,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:27:15,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:27:15,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:15,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509126862] [2021-11-19 13:27:15,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509126862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:15,762 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:15,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:27:15,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43401893] [2021-11-19 13:27:15,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:15,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:27:15,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:27:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:27:15,768 INFO L87 Difference]: Start difference. First operand 138 states and 428 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:16,040 INFO L93 Difference]: Finished difference Result 177 states and 515 transitions. [2021-11-19 13:27:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:27:16,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-19 13:27:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:16,043 INFO L225 Difference]: With dead ends: 177 [2021-11-19 13:27:16,043 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 13:27:16,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:27:16,045 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:16,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:27:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 13:27:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-19 13:27:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.108695652173913) internal successors, (429), 138 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 429 transitions. [2021-11-19 13:27:16,060 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 429 transitions. Word has length 22 [2021-11-19 13:27:16,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:16,060 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 429 transitions. [2021-11-19 13:27:16,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:16,061 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 429 transitions. [2021-11-19 13:27:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 13:27:16,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:16,063 INFO L514 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] [2021-11-19 13:27:16,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:16,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:16,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:27:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:16,268 INFO L85 PathProgramCache]: Analyzing trace with hash 52667622, now seen corresponding path program 1 times [2021-11-19 13:27:16,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:16,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974585364] [2021-11-19 13:27:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:16,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:16,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:16,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:27:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:16,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:27:16,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:27:16,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:27:16,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:16,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974585364] [2021-11-19 13:27:16,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974585364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:16,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:16,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:27:16,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134517999] [2021-11-19 13:27:16,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:16,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:27:16,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:27:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:27:16,777 INFO L87 Difference]: Start difference. First operand 139 states and 429 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2021-11-19 13:27:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:17,137 INFO L93 Difference]: Finished difference Result 213 states and 614 transitions. [2021-11-19 13:27:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:27:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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 23 [2021-11-19 13:27:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:17,140 INFO L225 Difference]: With dead ends: 213 [2021-11-19 13:27:17,141 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 13:27:17,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:27:17,142 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:17,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 5 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:27:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 13:27:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-19 13:27:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.093525179856115) internal successors, (430), 139 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 430 transitions. [2021-11-19 13:27:17,156 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 430 transitions. Word has length 23 [2021-11-19 13:27:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:17,156 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 430 transitions. [2021-11-19 13:27:17,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2021-11-19 13:27:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 430 transitions. [2021-11-19 13:27:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:27:17,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:17,159 INFO L514 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] [2021-11-19 13:27:17,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:27:17,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:17,371 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:27:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 258896864, now seen corresponding path program 1 times [2021-11-19 13:27:17,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:17,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780886049] [2021-11-19 13:27:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:17,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:17,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:17,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:27:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:17,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:27:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:18,652 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:27:18,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:27:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:27:18,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:19,526 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:27:19,527 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 101 treesize of output 79 [2021-11-19 13:27:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:27:34,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:34,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780886049] [2021-11-19 13:27:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780886049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:34,524 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:34,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:27:34,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573468033] [2021-11-19 13:27:34,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:34,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:27:34,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:27:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:34,526 INFO L87 Difference]: Start difference. First operand 140 states and 430 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:35,764 INFO L93 Difference]: Finished difference Result 229 states and 666 transitions. [2021-11-19 13:27:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:27:35,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:27:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:35,772 INFO L225 Difference]: With dead ends: 229 [2021-11-19 13:27:35,772 INFO L226 Difference]: Without dead ends: 225 [2021-11-19 13:27:35,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:35,774 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 50 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:35,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 10 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 406 Invalid, 0 Unknown, 170 Unchecked, 1.2s Time] [2021-11-19 13:27:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-19 13:27:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2021-11-19 13:27:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0045871559633026) internal successors, (655), 218 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 655 transitions. [2021-11-19 13:27:35,791 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 655 transitions. Word has length 24 [2021-11-19 13:27:35,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:35,791 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 655 transitions. [2021-11-19 13:27:35,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 655 transitions. [2021-11-19 13:27:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:27:35,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:35,793 INFO L514 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] [2021-11-19 13:27:35,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:36,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:36,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:27:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 262183484, now seen corresponding path program 2 times [2021-11-19 13:27:36,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:36,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974186026] [2021-11-19 13:27:36,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:27:36,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:36,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:36,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:27:36,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:27:36,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:27:36,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:27:36,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:36,943 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:27:36,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:27:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:27:37,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:37,606 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:27:37,606 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 101 treesize of output 79 [2021-11-19 13:27:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:27:51,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:51,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974186026] [2021-11-19 13:27:51,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974186026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:51,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:51,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:27:51,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140750594] [2021-11-19 13:27:51,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:51,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:27:51,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:51,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:27:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:51,951 INFO L87 Difference]: Start difference. First operand 219 states and 655 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:52,908 INFO L93 Difference]: Finished difference Result 255 states and 725 transitions. [2021-11-19 13:27:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:27:52,909 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:27:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:52,911 INFO L225 Difference]: With dead ends: 255 [2021-11-19 13:27:52,911 INFO L226 Difference]: Without dead ends: 250 [2021-11-19 13:27:52,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:52,912 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:52,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 8 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 160 Unchecked, 0.9s Time] [2021-11-19 13:27:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-19 13:27:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2021-11-19 13:27:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.9698275862068964) internal successors, (689), 232 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 689 transitions. [2021-11-19 13:27:52,942 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 689 transitions. Word has length 24 [2021-11-19 13:27:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:52,943 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 689 transitions. [2021-11-19 13:27:52,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 689 transitions. [2021-11-19 13:27:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:27:52,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:52,945 INFO L514 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] [2021-11-19 13:27:52,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:53,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:53,157 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:27:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 443610674, now seen corresponding path program 3 times [2021-11-19 13:27:53,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:53,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237303661] [2021-11-19 13:27:53,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:27:53,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:53,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:53,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:53,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:27:53,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 13:27:53,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:27:53,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:27:53,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:53,926 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:27:53,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:27:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:27:54,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:54,509 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:27:54,509 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 101 treesize of output 79 [2021-11-19 13:28:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:28:08,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:28:08,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237303661] [2021-11-19 13:28:08,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237303661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:28:08,239 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:28:08,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:28:08,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300899851] [2021-11-19 13:28:08,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:28:08,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:28:08,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:28:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:28:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:28:08,241 INFO L87 Difference]: Start difference. First operand 233 states and 689 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:09,125 INFO L93 Difference]: Finished difference Result 322 states and 918 transitions. [2021-11-19 13:28:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:28:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:28:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:09,129 INFO L225 Difference]: With dead ends: 322 [2021-11-19 13:28:09,129 INFO L226 Difference]: Without dead ends: 312 [2021-11-19 13:28:09,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:28:09,131 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:09,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 193 Unchecked, 0.9s Time] [2021-11-19 13:28:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-19 13:28:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 272. [2021-11-19 13:28:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.985239852398524) internal successors, (809), 271 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 809 transitions. [2021-11-19 13:28:09,146 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 809 transitions. Word has length 24 [2021-11-19 13:28:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:09,146 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 809 transitions. [2021-11-19 13:28:09,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 809 transitions. [2021-11-19 13:28:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:28:09,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:09,148 INFO L514 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] [2021-11-19 13:28:09,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:09,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:28:09,361 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:28:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash -720620432, now seen corresponding path program 4 times [2021-11-19 13:28:09,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:09,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233449247] [2021-11-19 13:28:09,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:28:09,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:09,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:09,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:28:09,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:28:09,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:28:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:28:09,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:10,224 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:28:10,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:28:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:28:10,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:10,827 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:28:10,827 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 101 treesize of output 79 [2021-11-19 13:28:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:28:21,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:28:21,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233449247] [2021-11-19 13:28:21,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233449247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:28:21,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:28:21,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:28:21,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552431312] [2021-11-19 13:28:21,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:28:21,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:28:21,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:28:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:28:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:28:21,921 INFO L87 Difference]: Start difference. First operand 272 states and 809 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:22,906 INFO L93 Difference]: Finished difference Result 280 states and 816 transitions. [2021-11-19 13:28:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:28:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:28:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:22,910 INFO L225 Difference]: With dead ends: 280 [2021-11-19 13:28:22,910 INFO L226 Difference]: Without dead ends: 247 [2021-11-19 13:28:22,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:28:22,911 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 69 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:22,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 8 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 167 Unchecked, 1.0s Time] [2021-11-19 13:28:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-19 13:28:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 208. [2021-11-19 13:28:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.0483091787439616) internal successors, (631), 207 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 631 transitions. [2021-11-19 13:28:22,922 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 631 transitions. Word has length 24 [2021-11-19 13:28:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:22,922 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 631 transitions. [2021-11-19 13:28:22,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 631 transitions. [2021-11-19 13:28:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:28:22,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:22,924 INFO L514 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] [2021-11-19 13:28:22,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 13:28:23,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:28:23,137 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:28:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 968017986, now seen corresponding path program 5 times [2021-11-19 13:28:23,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:23,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071791533] [2021-11-19 13:28:23,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:28:23,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:23,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:23,139 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:23,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:28:23,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:28:23,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:28:23,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:28:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:23,937 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:28:23,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:28:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:28:24,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:24,391 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:28:24,392 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 103 treesize of output 81 [2021-11-19 13:28:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:28:44,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:28:44,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071791533] [2021-11-19 13:28:44,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071791533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:28:44,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:28:44,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:28:44,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825029047] [2021-11-19 13:28:44,922 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:28:44,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:28:44,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:28:44,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:28:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:28:44,923 INFO L87 Difference]: Start difference. First operand 208 states and 631 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:45,820 INFO L93 Difference]: Finished difference Result 233 states and 673 transitions. [2021-11-19 13:28:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:28:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:28:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:45,823 INFO L225 Difference]: With dead ends: 233 [2021-11-19 13:28:45,823 INFO L226 Difference]: Without dead ends: 230 [2021-11-19 13:28:45,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:28:45,825 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 56 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:45,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 9 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 294 Unchecked, 0.9s Time] [2021-11-19 13:28:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-19 13:28:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2021-11-19 13:28:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 2.96875) internal successors, (665), 224 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 665 transitions. [2021-11-19 13:28:45,836 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 665 transitions. Word has length 24 [2021-11-19 13:28:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:45,836 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 665 transitions. [2021-11-19 13:28:45,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:28:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 665 transitions. [2021-11-19 13:28:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:28:45,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:45,838 INFO L514 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] [2021-11-19 13:28:45,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:46,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:28:46,051 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:28:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:46,051 INFO L85 PathProgramCache]: Analyzing trace with hash 971304606, now seen corresponding path program 6 times [2021-11-19 13:28:46,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:46,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199138663] [2021-11-19 13:28:46,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 13:28:46,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:46,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:46,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:28:46,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-19 13:28:46,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:28:46,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:28:46,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:46,733 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:28:46,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:28:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:28:46,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:47,191 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:28:47,192 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 103 treesize of output 81 [2021-11-19 13:29:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:29:06,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:06,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199138663] [2021-11-19 13:29:06,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199138663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:06,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:06,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:29:06,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053254650] [2021-11-19 13:29:06,567 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:06,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:29:06,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:29:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:29:06,568 INFO L87 Difference]: Start difference. First operand 225 states and 665 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:07,203 INFO L93 Difference]: Finished difference Result 248 states and 703 transitions. [2021-11-19 13:29:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:29:07,203 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:29:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:07,206 INFO L225 Difference]: With dead ends: 248 [2021-11-19 13:29:07,206 INFO L226 Difference]: Without dead ends: 244 [2021-11-19 13:29:07,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:29:07,207 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 56 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:07,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 8 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 170 Unchecked, 0.6s Time] [2021-11-19 13:29:07,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-19 13:29:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 233. [2021-11-19 13:29:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.9439655172413794) internal successors, (683), 232 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 683 transitions. [2021-11-19 13:29:07,218 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 683 transitions. Word has length 24 [2021-11-19 13:29:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:07,218 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 683 transitions. [2021-11-19 13:29:07,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 683 transitions. [2021-11-19 13:29:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:29:07,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:07,220 INFO L514 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] [2021-11-19 13:29:07,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:07,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:07,439 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:29:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1152731796, now seen corresponding path program 7 times [2021-11-19 13:29:07,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:07,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001646954] [2021-11-19 13:29:07,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:29:07,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:07,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:07,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:29:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:07,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:29:07,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:08,220 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:29:08,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:29:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:29:08,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:08,651 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:29:08,651 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 103 treesize of output 81 [2021-11-19 13:29:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:29:28,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:28,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001646954] [2021-11-19 13:29:28,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001646954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:28,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:28,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:29:28,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264423993] [2021-11-19 13:29:28,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:28,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:29:28,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:29:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:29:28,262 INFO L87 Difference]: Start difference. First operand 233 states and 683 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:29,007 INFO L93 Difference]: Finished difference Result 258 states and 716 transitions. [2021-11-19 13:29:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:29:29,008 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:29:29,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:29,011 INFO L225 Difference]: With dead ends: 258 [2021-11-19 13:29:29,011 INFO L226 Difference]: Without dead ends: 248 [2021-11-19 13:29:29,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:29:29,012 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:29,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 132 Unchecked, 0.7s Time] [2021-11-19 13:29:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-19 13:29:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 236. [2021-11-19 13:29:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.927659574468085) internal successors, (688), 235 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 688 transitions. [2021-11-19 13:29:29,023 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 688 transitions. Word has length 24 [2021-11-19 13:29:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:29,024 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 688 transitions. [2021-11-19 13:29:29,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 688 transitions. [2021-11-19 13:29:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:29:29,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:29,025 INFO L514 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] [2021-11-19 13:29:29,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:29,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:29,238 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:29:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash -11499310, now seen corresponding path program 8 times [2021-11-19 13:29:29,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:29,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589427038] [2021-11-19 13:29:29,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:29:29,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:29,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:29,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:29:29,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:29:29,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:29:29,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:29:29,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:29,836 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:29:29,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:29:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:29:29,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:30,292 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:29:30,292 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 103 treesize of output 81 [2021-11-19 13:29:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:29:49,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:49,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589427038] [2021-11-19 13:29:49,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589427038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:49,916 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:49,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:29:49,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169443932] [2021-11-19 13:29:49,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:49,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:29:49,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:29:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:29:49,917 INFO L87 Difference]: Start difference. First operand 236 states and 688 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:50,876 INFO L93 Difference]: Finished difference Result 243 states and 694 transitions. [2021-11-19 13:29:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:29:50,877 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:29:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:50,880 INFO L225 Difference]: With dead ends: 243 [2021-11-19 13:29:50,880 INFO L226 Difference]: Without dead ends: 232 [2021-11-19 13:29:50,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:29:50,881 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 60 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:50,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 9 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 184 Unchecked, 0.9s Time] [2021-11-19 13:29:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-19 13:29:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 222. [2021-11-19 13:29:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.9728506787330318) internal successors, (657), 221 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 657 transitions. [2021-11-19 13:29:50,890 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 657 transitions. Word has length 24 [2021-11-19 13:29:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:50,890 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 657 transitions. [2021-11-19 13:29:50,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 657 transitions. [2021-11-19 13:29:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:29:50,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:50,893 INFO L514 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] [2021-11-19 13:29:50,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:51,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:51,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:29:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:51,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2063760946, now seen corresponding path program 9 times [2021-11-19 13:29:51,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:51,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274604997] [2021-11-19 13:29:51,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:29:51,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:51,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:51,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:29:51,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 13:29:51,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:29:51,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:29:51,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:51,667 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:29:51,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:29:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:29:51,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:52,165 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:29:52,166 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 103 treesize of output 81 [2021-11-19 13:30:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:10,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:10,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274604997] [2021-11-19 13:30:10,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274604997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:10,630 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:10,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:30:10,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223712996] [2021-11-19 13:30:10,630 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:10,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:30:10,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:30:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:30:10,631 INFO L87 Difference]: Start difference. First operand 222 states and 657 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:11,492 INFO L93 Difference]: Finished difference Result 229 states and 663 transitions. [2021-11-19 13:30:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:30:11,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:30:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:11,495 INFO L225 Difference]: With dead ends: 229 [2021-11-19 13:30:11,495 INFO L226 Difference]: Without dead ends: 222 [2021-11-19 13:30:11,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:30:11,496 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 56 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:11,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 10 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 174 Unchecked, 0.8s Time] [2021-11-19 13:30:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-19 13:30:11,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2021-11-19 13:30:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9727272727272727) internal successors, (654), 220 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 654 transitions. [2021-11-19 13:30:11,506 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 654 transitions. Word has length 24 [2021-11-19 13:30:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:11,507 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 654 transitions. [2021-11-19 13:30:11,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 654 transitions. [2021-11-19 13:30:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:30:11,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:11,508 INFO L514 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] [2021-11-19 13:30:11,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:11,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:11,721 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:30:11,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1304307092, now seen corresponding path program 10 times [2021-11-19 13:30:11,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:11,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688775359] [2021-11-19 13:30:11,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:30:11,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:11,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:11,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:30:11,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:30:11,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:30:11,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:30:11,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:12,299 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 13:30:12,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 13:30:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:12,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:12,769 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 13:30:12,770 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 103 treesize of output 81 [2021-11-19 13:30:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:30,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:30,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688775359] [2021-11-19 13:30:30,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688775359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:30,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:30,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:30:30,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455477507] [2021-11-19 13:30:30,525 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:30,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:30:30,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:30:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:30:30,526 INFO L87 Difference]: Start difference. First operand 221 states and 654 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:31,514 INFO L93 Difference]: Finished difference Result 228 states and 660 transitions. [2021-11-19 13:30:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:30:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:30:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:31,516 INFO L225 Difference]: With dead ends: 228 [2021-11-19 13:30:31,516 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 13:30:31,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:30:31,517 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 51 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:31,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 11 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 233 Unchecked, 1.0s Time] [2021-11-19 13:30:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 13:30:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-19 13:30:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9771689497716896) internal successors, (652), 219 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 652 transitions. [2021-11-19 13:30:31,527 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 652 transitions. Word has length 24 [2021-11-19 13:30:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:31,527 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 652 transitions. [2021-11-19 13:30:31,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 652 transitions. [2021-11-19 13:30:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:30:31,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:31,529 INFO L514 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] [2021-11-19 13:30:31,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:31,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:31,742 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:30:31,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash 990257626, now seen corresponding path program 11 times [2021-11-19 13:30:31,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:31,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717629559] [2021-11-19 13:30:31,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:30:31,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:31,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:31,745 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:31,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:30:31,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:30:31,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:30:31,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:30:31,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:32,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:32,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:32,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717629559] [2021-11-19 13:30:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717629559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:32,689 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:32,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:30:32,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626841241] [2021-11-19 13:30:32,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:32,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:30:32,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:30:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:30:32,690 INFO L87 Difference]: Start difference. First operand 220 states and 652 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:33,823 INFO L93 Difference]: Finished difference Result 327 states and 982 transitions. [2021-11-19 13:30:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:30:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-19 13:30:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:33,826 INFO L225 Difference]: With dead ends: 327 [2021-11-19 13:30:33,826 INFO L226 Difference]: Without dead ends: 320 [2021-11-19 13:30:33,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:30:33,827 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 117 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:33,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 8 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:30:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-19 13:30:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 234. [2021-11-19 13:30:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.9012875536480687) internal successors, (676), 233 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 676 transitions. [2021-11-19 13:30:33,838 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 676 transitions. Word has length 24 [2021-11-19 13:30:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:33,838 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 676 transitions. [2021-11-19 13:30:33,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 676 transitions. [2021-11-19 13:30:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:30:33,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:33,840 INFO L514 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] [2021-11-19 13:30:33,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:34,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:34,053 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:30:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -873131244, now seen corresponding path program 12 times [2021-11-19 13:30:34,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:34,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123731546] [2021-11-19 13:30:34,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 13:30:34,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:34,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:34,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:34,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:30:34,138 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-19 13:30:34,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:30:34,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:34,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:34,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:34,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:34,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123731546] [2021-11-19 13:30:34,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123731546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:34,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:34,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:30:34,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790007077] [2021-11-19 13:30:34,302 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:34,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:34,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:34,302 INFO L87 Difference]: Start difference. First operand 234 states and 676 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:34,419 INFO L93 Difference]: Finished difference Result 198 states and 529 transitions. [2021-11-19 13:30:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-11-19 13:30:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:34,422 INFO L225 Difference]: With dead ends: 198 [2021-11-19 13:30:34,422 INFO L226 Difference]: Without dead ends: 198 [2021-11-19 13:30:34,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:34,425 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:34,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-19 13:30:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-19 13:30:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.685279187817259) internal successors, (529), 197 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 529 transitions. [2021-11-19 13:30:34,434 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 529 transitions. Word has length 24 [2021-11-19 13:30:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:34,436 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 529 transitions. [2021-11-19 13:30:34,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 529 transitions. [2021-11-19 13:30:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:30:34,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:34,437 INFO L514 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] [2021-11-19 13:30:34,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 13:30:34,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:34,649 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:30:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1162764132, now seen corresponding path program 13 times [2021-11-19 13:30:34,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:34,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715950486] [2021-11-19 13:30:34,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:30:34,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:34,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:34,654 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:34,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a23e7fd-2c3b-4c93-8873-057455a4fba7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:30:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:30:34,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:35,780 INFO L354 Elim1Store]: treesize reduction 554, result has 0.2 percent of original size [2021-11-19 13:30:35,780 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 174 treesize of output 34 [2021-11-19 13:30:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:35,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:45,939 WARN L227 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 530 DAG size of output: 322 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:30:45,947 INFO L354 Elim1Store]: treesize reduction 1008, result has 56.0 percent of original size [2021-11-19 13:30:45,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 185 treesize of output 1329