./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH --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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:39,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:39,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:39,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:39,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:39,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:39,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:39,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:39,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:39,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:39,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:39,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:39,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:39,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:39,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:39,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:39,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:39,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:39,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:39,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:39,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:39,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:39,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:39,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:39,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:39,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:39,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:39,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:39,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:39,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:39,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:39,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:39,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:39,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:39,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:39,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:39,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:39,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:39,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:39,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:39,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:39,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:21:39,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:39,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:39,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:39,680 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:39,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:39,681 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:39,681 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:21:39,681 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:39,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:39,682 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:21:39,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:21:39,683 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:39,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:21:39,684 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:21:39,684 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:21:39,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:39,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:21:39,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:21:39,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:21:39,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:39,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:39,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:39,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:39,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:39,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:21:39,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:39,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:39,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:39,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:39,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:39,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:39,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:39,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:39,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:39,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:21:39,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:21:39,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:39,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:39,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:39,691 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_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2021-11-03 04:21:39,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:39,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:39,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:39,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:39,986 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:39,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-03 04:21:40,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/7333b73f9/67e2e0d56c994033abe19a46e70f7dec/FLAGe902415d7 [2021-11-03 04:21:40,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:40,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-03 04:21:40,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/7333b73f9/67e2e0d56c994033abe19a46e70f7dec/FLAGe902415d7 [2021-11-03 04:21:40,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/7333b73f9/67e2e0d56c994033abe19a46e70f7dec [2021-11-03 04:21:40,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:40,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:40,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:40,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:40,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:40,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:40" (1/1) ... [2021-11-03 04:21:40,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f97a41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:40, skipping insertion in model container [2021-11-03 04:21:40,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:40" (1/1) ... [2021-11-03 04:21:40,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:40,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:41,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-03 04:21:41,635 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-03 04:21:41,776 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-03 04:21:41,777 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-03 04:21:41,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:41,804 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) [2021-11-03 04:21:41,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fdeb802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:41, skipping insertion in model container [2021-11-03 04:21:41,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:41,805 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:21:41,808 INFO L168 Benchmark]: Toolchain (without parser) took 929.65 ms. Allocated memory is still 117.4 MB. Free memory was 75.0 MB in the beginning and 77.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:41,808 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 94.3 MB in the end (delta: 52.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:41,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 921.85 ms. Allocated memory is still 117.4 MB. Free memory was 74.7 MB in the beginning and 77.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:41,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 94.3 MB in the end (delta: 52.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 921.85 ms. Allocated memory is still 117.4 MB. Free memory was 74.7 MB in the beginning and 77.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH --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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:44,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:44,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:44,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:44,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:44,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:44,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:44,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:44,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:44,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:44,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:44,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:44,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:44,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:44,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:44,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:44,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:44,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:44,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:44,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:44,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:44,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:44,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:44,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:44,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:44,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:44,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:44,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:44,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:44,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:44,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:44,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:44,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:44,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:44,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:44,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:44,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:44,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:44,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:44,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:44,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:44,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:21:44,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:44,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:44,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:44,249 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:44,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:44,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:44,250 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:44,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:44,251 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:44,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:44,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:21:44,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:21:44,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:44,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:44,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:44,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:44,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:44,254 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:21:44,254 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:21:44,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:21:44,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:44,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:44,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:44,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:44,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:21:44,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:44,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:44,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:44,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:44,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:44,258 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:21:44,258 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:44,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:44,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:44,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:44,259 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_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2021-11-03 04:21:44,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:44,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:44,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:44,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:44,697 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:44,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-03 04:21:44,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/f95c55b73/995dbfe56dd74be5b944b2ec052a81be/FLAGb5191c3e9 [2021-11-03 04:21:45,562 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:45,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-03 04:21:45,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/f95c55b73/995dbfe56dd74be5b944b2ec052a81be/FLAGb5191c3e9 [2021-11-03 04:21:45,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/data/f95c55b73/995dbfe56dd74be5b944b2ec052a81be [2021-11-03 04:21:45,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:45,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:45,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:45,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:45,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:45,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:45" (1/1) ... [2021-11-03 04:21:45,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2807a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:45, skipping insertion in model container [2021-11-03 04:21:45,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:45" (1/1) ... [2021-11-03 04:21:45,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:45,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:46,446 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-03 04:21:46,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-03 04:21:46,566 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-03 04:21:46,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-03 04:21:46,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:46,601 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:21:46,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:46,677 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-03 04:21:46,685 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-03 04:21:46,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-03 04:21:46,800 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-03 04:21:46,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:46,816 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:21:46,848 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-03 04:21:46,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-03 04:21:46,907 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-03 04:21:46,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-03 04:21:46,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:47,007 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:21:47,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47 WrapperNode [2021-11-03 04:21:47,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:47,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:47,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:21:47,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:21:47,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:47,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:21:47,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:21:47,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:21:47,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:21:47,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:21:47,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:21:47,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:21:47,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (1/1) ... [2021-11-03 04:21:47,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:47,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:21:47,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:21:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:21:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:21:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:21:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:21:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:21:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:21:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:21:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:21:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:21:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:21:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:21:47,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:21:53,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:21:53,559 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-03 04:21:53,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:53 BoogieIcfgContainer [2021-11-03 04:21:53,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:21:53,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:21:53,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:21:53,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:21:53,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:21:45" (1/3) ... [2021-11-03 04:21:53,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443a46b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:53, skipping insertion in model container [2021-11-03 04:21:53,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:47" (2/3) ... [2021-11-03 04:21:53,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443a46b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:53, skipping insertion in model container [2021-11-03 04:21:53,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:53" (3/3) ... [2021-11-03 04:21:53,570 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2021-11-03 04:21:53,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:21:53,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-03 04:21:53,626 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:21:53,632 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 [2021-11-03 04:21:53,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-03 04:21:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 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) [2021-11-03 04:21:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:21:53,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:53,661 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:53,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:21:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-03 04:21:53,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:53,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236853527] [2021-11-03 04:21:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:53,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:53,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:53,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:21:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:53,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:21:53,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:54,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:54,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:54,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236853527] [2021-11-03 04:21:54,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236853527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:54,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:54,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:21:54,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192498959] [2021-11-03 04:21:54,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:21:54,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:21:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:21:54,084 INFO L87 Difference]: Start difference. First operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:54,183 INFO L93 Difference]: Finished difference Result 544 states and 861 transitions. [2021-11-03 04:21:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:21:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:21:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:54,200 INFO L225 Difference]: With dead ends: 544 [2021-11-03 04:21:54,200 INFO L226 Difference]: Without dead ends: 266 [2021-11-03 04:21:54,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:21:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-03 04:21:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-03 04:21:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 265 states have internal predecessors, (335), 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) [2021-11-03 04:21:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2021-11-03 04:21:54,314 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 8 [2021-11-03 04:21:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:54,315 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2021-11-03 04:21:54,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2021-11-03 04:21:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:21:54,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:54,316 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:54,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:54,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:54,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:21:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-03 04:21:54,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:54,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338095104] [2021-11-03 04:21:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:54,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:54,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:54,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:21:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:54,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:21:54,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:54,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:54,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:54,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338095104] [2021-11-03 04:21:54,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338095104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:54,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:21:54,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945474010] [2021-11-03 04:21:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:54,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:54,951 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-03 04:22:00,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:00,163 INFO L93 Difference]: Finished difference Result 701 states and 886 transitions. [2021-11-03 04:22:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:22:00,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-03 04:22:00,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:00,168 INFO L225 Difference]: With dead ends: 701 [2021-11-03 04:22:00,169 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 04:22:00,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:22:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 04:22:00,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 378. [2021-11-03 04:22:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 365 states have (on average 1.326027397260274) internal successors, (484), 377 states have internal predecessors, (484), 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) [2021-11-03 04:22:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 484 transitions. [2021-11-03 04:22:00,208 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 484 transitions. Word has length 10 [2021-11-03 04:22:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:00,208 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 484 transitions. [2021-11-03 04:22:00,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-03 04:22:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 484 transitions. [2021-11-03 04:22:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:22:00,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:00,210 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:00,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:00,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:00,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:00,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash -315185698, now seen corresponding path program 1 times [2021-11-03 04:22:00,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:00,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997398826] [2021-11-03 04:22:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:00,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:00,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:00,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:22:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:00,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:22:00,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:00,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:22:00,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:22:00,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:22:00,767 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:22:00,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:22:00,856 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:22:00,857 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 67 treesize of output 23 [2021-11-03 04:22:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:00,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:00,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:00,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997398826] [2021-11-03 04:22:00,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997398826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:00,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:00,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:22:00,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251377404] [2021-11-03 04:22:00,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:22:00,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:22:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:22:01,000 INFO L87 Difference]: Start difference. First operand 378 states and 484 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-03 04:22:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:11,159 INFO L93 Difference]: Finished difference Result 822 states and 1044 transitions. [2021-11-03 04:22:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:22:11,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 12 [2021-11-03 04:22:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:11,165 INFO L225 Difference]: With dead ends: 822 [2021-11-03 04:22:11,165 INFO L226 Difference]: Without dead ends: 603 [2021-11-03 04:22:11,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:22:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-03 04:22:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 377. [2021-11-03 04:22:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 364 states have (on average 1.3241758241758241) internal successors, (482), 376 states have internal predecessors, (482), 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) [2021-11-03 04:22:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 482 transitions. [2021-11-03 04:22:11,185 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 482 transitions. Word has length 12 [2021-11-03 04:22:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:11,186 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 482 transitions. [2021-11-03 04:22:11,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-03 04:22:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 482 transitions. [2021-11-03 04:22:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:22:11,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:11,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:11,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:22:11,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:11,403 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-03 04:22:11,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:11,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996952506] [2021-11-03 04:22:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:11,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:11,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:11,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:22:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:11,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:22:11,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:11,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:11,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:11,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996952506] [2021-11-03 04:22:11,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996952506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:11,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:11,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:22:11,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722391514] [2021-11-03 04:22:11,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:22:11,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:22:11,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:22:11,998 INFO L87 Difference]: Start difference. First operand 377 states and 482 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-03 04:22:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:12,146 INFO L93 Difference]: Finished difference Result 752 states and 968 transitions. [2021-11-03 04:22:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:22:12,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-03 04:22:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:12,150 INFO L225 Difference]: With dead ends: 752 [2021-11-03 04:22:12,150 INFO L226 Difference]: Without dead ends: 385 [2021-11-03 04:22:12,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:22:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-03 04:22:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2021-11-03 04:22:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.2756756756756757) internal successors, (472), 382 states have internal predecessors, (472), 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) [2021-11-03 04:22:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 472 transitions. [2021-11-03 04:22:12,174 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 472 transitions. Word has length 44 [2021-11-03 04:22:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 472 transitions. [2021-11-03 04:22:12,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-03 04:22:12,178 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 472 transitions. [2021-11-03 04:22:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:22:12,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:12,180 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:12,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:12,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:12,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-03 04:22:12,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:12,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179630283] [2021-11-03 04:22:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:12,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:12,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:12,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:12,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:22:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:12,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:22:12,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:12,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:12,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:12,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179630283] [2021-11-03 04:22:12,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179630283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:12,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:12,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:22:12,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174260702] [2021-11-03 04:22:12,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:22:12,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:22:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:22:12,931 INFO L87 Difference]: Start difference. First operand 383 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:17,346 INFO L93 Difference]: Finished difference Result 929 states and 1164 transitions. [2021-11-03 04:22:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:22:17,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 04:22:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:17,367 INFO L225 Difference]: With dead ends: 929 [2021-11-03 04:22:17,367 INFO L226 Difference]: Without dead ends: 927 [2021-11-03 04:22:17,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:22:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-03 04:22:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 381. [2021-11-03 04:22:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.2737127371273713) internal successors, (470), 380 states have internal predecessors, (470), 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) [2021-11-03 04:22:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2021-11-03 04:22:17,390 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 44 [2021-11-03 04:22:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:17,391 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2021-11-03 04:22:17,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2021-11-03 04:22:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:22:17,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:17,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:17,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:17,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:17,611 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-03 04:22:17,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:17,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461287042] [2021-11-03 04:22:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:17,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:17,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:17,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:17,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:22:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:22:17,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:18,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:18,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:18,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461287042] [2021-11-03 04:22:18,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461287042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:18,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:18,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:22:18,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804362582] [2021-11-03 04:22:18,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:22:18,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:18,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:22:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:18,425 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-03 04:22:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:21,095 INFO L93 Difference]: Finished difference Result 1293 states and 1622 transitions. [2021-11-03 04:22:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:22:21,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-03 04:22:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:21,102 INFO L225 Difference]: With dead ends: 1293 [2021-11-03 04:22:21,102 INFO L226 Difference]: Without dead ends: 958 [2021-11-03 04:22:21,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-03 04:22:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 473. [2021-11-03 04:22:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 461 states have (on average 1.2603036876355749) internal successors, (581), 472 states have internal predecessors, (581), 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) [2021-11-03 04:22:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 581 transitions. [2021-11-03 04:22:21,129 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 581 transitions. Word has length 51 [2021-11-03 04:22:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:21,131 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 581 transitions. [2021-11-03 04:22:21,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-03 04:22:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 581 transitions. [2021-11-03 04:22:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:22:21,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:21,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:21,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:21,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:21,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash 493379014, now seen corresponding path program 1 times [2021-11-03 04:22:21,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:21,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149324057] [2021-11-03 04:22:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:21,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:21,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:21,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:22:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:21,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:22:21,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:21,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:21,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:21,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149324057] [2021-11-03 04:22:21,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149324057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:21,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:21,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:22:21,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077476236] [2021-11-03 04:22:21,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:22:21,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:22:21,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:21,948 INFO L87 Difference]: Start difference. First operand 473 states and 581 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-03 04:22:22,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:22,035 INFO L93 Difference]: Finished difference Result 903 states and 1118 transitions. [2021-11-03 04:22:22,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:22:22,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 52 [2021-11-03 04:22:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:22,039 INFO L225 Difference]: With dead ends: 903 [2021-11-03 04:22:22,040 INFO L226 Difference]: Without dead ends: 476 [2021-11-03 04:22:22,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-03 04:22:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-03 04:22:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 464 states have (on average 1.2586206896551724) internal successors, (584), 475 states have internal predecessors, (584), 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) [2021-11-03 04:22:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 584 transitions. [2021-11-03 04:22:22,064 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 584 transitions. Word has length 52 [2021-11-03 04:22:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:22,065 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 584 transitions. [2021-11-03 04:22:22,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-03 04:22:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 584 transitions. [2021-11-03 04:22:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:22:22,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:22,067 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:22,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:22,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:22,283 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1169148346, now seen corresponding path program 1 times [2021-11-03 04:22:22,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:22,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220531756] [2021-11-03 04:22:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:22,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:22,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:22,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:22:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:22,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:22:22,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:22,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:23,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:23,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220531756] [2021-11-03 04:22:23,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220531756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:23,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [500465570] [2021-11-03 04:22:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:23,095 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:23,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:22:23,098 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:22:23,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 04:22:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:22:23,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:22:23,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:22:24,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [500465570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:24,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:22:24,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 14 [2021-11-03 04:22:24,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437249544] [2021-11-03 04:22:24,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:22:24,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:22:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:22:24,197 INFO L87 Difference]: Start difference. First operand 476 states and 584 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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) [2021-11-03 04:22:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:30,172 INFO L93 Difference]: Finished difference Result 2984 states and 3768 transitions. [2021-11-03 04:22:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:22:30,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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 54 [2021-11-03 04:22:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:30,188 INFO L225 Difference]: With dead ends: 2984 [2021-11-03 04:22:30,189 INFO L226 Difference]: Without dead ends: 2554 [2021-11-03 04:22:30,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:22:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-03 04:22:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 658. [2021-11-03 04:22:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 646 states have (on average 1.2337461300309598) internal successors, (797), 657 states have internal predecessors, (797), 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) [2021-11-03 04:22:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 797 transitions. [2021-11-03 04:22:30,237 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 797 transitions. Word has length 54 [2021-11-03 04:22:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:30,237 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 797 transitions. [2021-11-03 04:22:30,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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) [2021-11-03 04:22:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 797 transitions. [2021-11-03 04:22:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:22:30,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:30,241 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:30,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:30,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:30,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:30,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:30,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1213483017, now seen corresponding path program 1 times [2021-11-03 04:22:30,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:30,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486202081] [2021-11-03 04:22:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:30,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:30,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:30,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:30,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:22:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:31,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:22:31,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:31,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:31,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:31,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486202081] [2021-11-03 04:22:31,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486202081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:31,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [975877462] [2021-11-03 04:22:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:31,783 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:31,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:22:31,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:22:31,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 04:22:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:32,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:22:32,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:32,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:32,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [975877462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:32,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95998275] [2021-11-03 04:22:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:32,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:22:32,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:32,878 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:22:32,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 04:22:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:22:33,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:33,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:22:33,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:22:33,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:22:33,645 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:22:33,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:22:33,766 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:22:33,767 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 67 treesize of output 23 [2021-11-03 04:22:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:22:33,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:22:34,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95998275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:34,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 04:22:34,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-03 04:22:34,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435214170] [2021-11-03 04:22:34,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:22:34,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:22:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:22:34,035 INFO L87 Difference]: Start difference. First operand 658 states and 797 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-03 04:22:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:44,640 INFO L93 Difference]: Finished difference Result 885 states and 1084 transitions. [2021-11-03 04:22:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:22:44,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 82 [2021-11-03 04:22:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:44,646 INFO L225 Difference]: With dead ends: 885 [2021-11-03 04:22:44,647 INFO L226 Difference]: Without dead ends: 822 [2021-11-03 04:22:44,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:22:44,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-03 04:22:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 736. [2021-11-03 04:22:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 724 states have (on average 1.2458563535911602) internal successors, (902), 735 states have internal predecessors, (902), 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) [2021-11-03 04:22:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 902 transitions. [2021-11-03 04:22:44,709 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 902 transitions. Word has length 82 [2021-11-03 04:22:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:44,710 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 902 transitions. [2021-11-03 04:22:44,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-03 04:22:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 902 transitions. [2021-11-03 04:22:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:22:44,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:44,712 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:44,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:44,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:45,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:45,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:45,334 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:45,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-03 04:22:45,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:45,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006586330] [2021-11-03 04:22:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:45,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:45,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:45,336 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:45,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:22:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:22:46,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:46,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:46,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:46,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:46,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006586330] [2021-11-03 04:22:46,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006586330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:46,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [613113584] [2021-11-03 04:22:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:46,652 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:46,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:22:46,653 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:22:46,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 04:22:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:47,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:22:47,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:47,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:22:48,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [613113584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:48,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989634702] [2021-11-03 04:22:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:48,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:22:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:48,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:22:48,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 04:22:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:48,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:22:48,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:22:49,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:22:49,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989634702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:22:49,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:22:49,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 04:22:49,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942359058] [2021-11-03 04:22:49,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:22:49,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:22:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:22:49,316 INFO L87 Difference]: Start difference. First operand 736 states and 902 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-11-03 04:22:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:49,779 INFO L93 Difference]: Finished difference Result 1446 states and 1794 transitions. [2021-11-03 04:22:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:22:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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 84 [2021-11-03 04:22:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:49,786 INFO L225 Difference]: With dead ends: 1446 [2021-11-03 04:22:49,786 INFO L226 Difference]: Without dead ends: 756 [2021-11-03 04:22:49,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:22:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-03 04:22:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-11-03 04:22:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 744 states have (on average 1.239247311827957) internal successors, (922), 755 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 922 transitions. [2021-11-03 04:22:49,859 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 922 transitions. Word has length 84 [2021-11-03 04:22:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:49,860 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 922 transitions. [2021-11-03 04:22:49,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-11-03 04:22:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 922 transitions. [2021-11-03 04:22:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 04:22:49,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:49,862 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:49,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:50,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-03 04:22:50,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:50,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:50,469 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 04:22:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1971016961, now seen corresponding path program 2 times [2021-11-03 04:22:50,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:50,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498112841] [2021-11-03 04:22:50,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:22:50,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:50,473 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:50,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:23:01,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:23:01,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:23:01,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:23:01,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:23:02,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:23:03,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:03,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498112841] [2021-11-03 04:23:03,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498112841] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:23:03,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031491221] [2021-11-03 04:23:03,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:23:03,152 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:23:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:23:03,166 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:23:03,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 04:23:55,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:23:55,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:23:55,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:23:55,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:23:55,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:23:56,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2031491221] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:23:56,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28612972] [2021-11-03 04:23:56,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:23:56,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:23:56,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:23:56,108 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:23:56,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d6d0b-71ca-4114-be13-061c072658e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process