./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:25:12,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:25:12,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:25:12,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:25:12,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:25:12,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:25:12,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:25:12,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:25:12,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:25:12,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:25:12,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:25:12,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:25:12,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:25:12,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:25:12,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:25:12,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:25:12,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:25:12,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:25:12,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:25:12,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:25:12,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:25:12,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:25:12,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:25:12,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:25:12,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:25:12,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:25:12,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:25:12,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:25:12,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:25:12,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:25:12,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:25:12,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:25:12,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:25:12,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:25:12,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:25:12,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:25:12,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:25:12,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:25:12,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:25:12,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:25:12,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:25:12,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:25:12,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:25:12,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:25:12,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:25:12,696 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:25:12,697 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:25:12,697 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:25:12,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:25:12,697 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:25:12,698 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:25:12,698 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:25:12,699 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:25:12,700 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:25:12,700 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:25:12,700 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:25:12,701 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:25:12,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:25:12,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:25:12,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:25:12,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:25:12,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:25:12,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:25:12,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:25:12,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:25:12,703 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:25:12,704 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:25:12,704 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:25:12,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:25:12,707 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:25:12,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:25:12,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:25:12,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:25:12,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:25:12,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:12,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:25:12,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:25:12,709 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:25:12,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:25:12,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:25:12,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:25:12,710 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_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-10-29 05:25:13,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:25:13,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:25:13,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:25:13,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:25:13,070 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:25:13,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-29 05:25:13,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/e23fdbac8/2acb850974794ce0bf6629f25078af7a/FLAG9cb1f7976 [2021-10-29 05:25:13,928 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:25:13,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-29 05:25:13,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/e23fdbac8/2acb850974794ce0bf6629f25078af7a/FLAG9cb1f7976 [2021-10-29 05:25:14,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/e23fdbac8/2acb850974794ce0bf6629f25078af7a [2021-10-29 05:25:14,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:25:14,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:25:14,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:14,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:25:14,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:25:14,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:14" (1/1) ... [2021-10-29 05:25:14,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b9c1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:14, skipping insertion in model container [2021-10-29 05:25:14,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:14" (1/1) ... [2021-10-29 05:25:14,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:25:14,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:25:14,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:14,724 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) [2021-10-29 05:25:14,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d8402ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:14, skipping insertion in model container [2021-10-29 05:25:14,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:14,726 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:25:14,729 INFO L168 Benchmark]: Toolchain (without parser) took 596.56 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 38.6 MB in the beginning and 77.3 MB in the end (delta: -38.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:14,730 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:14,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.47 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 38.4 MB in the beginning and 77.3 MB in the end (delta: -38.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:14,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 593.47 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 38.4 MB in the beginning and 77.3 MB in the end (delta: -38.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:25:17,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:25:17,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:25:17,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:25:17,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:25:17,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:25:17,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:25:17,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:25:17,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:25:17,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:25:17,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:25:17,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:25:17,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:25:17,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:25:17,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:25:17,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:25:17,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:25:17,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:25:17,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:25:17,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:25:17,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:25:17,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:25:17,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:25:17,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:25:17,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:25:17,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:25:17,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:25:17,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:25:17,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:25:17,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:25:17,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:25:17,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:25:17,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:25:17,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:25:17,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:25:17,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:25:17,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:25:17,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:25:17,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:25:17,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:25:17,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:25:17,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:25:17,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:25:17,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:25:17,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:25:17,823 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:25:17,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:25:17,823 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:25:17,824 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:25:17,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:25:17,824 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:25:17,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:25:17,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:25:17,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:25:17,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:25:17,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:25:17,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:25:17,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:25:17,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:25:17,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:25:17,831 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:25:17,831 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:25:17,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:25:17,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:25:17,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:25:17,833 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:25:17,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:25:17,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:25:17,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:25:17,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:25:17,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:25:17,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:17,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:25:17,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:25:17,836 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:25:17,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:25:17,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:25:17,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:25:17,837 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_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-10-29 05:25:18,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:25:18,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:25:18,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:25:18,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:25:18,399 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:25:18,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-29 05:25:18,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/51f474f9d/aeaff391ecda488399a70267093b9e27/FLAGf3ecc338c [2021-10-29 05:25:19,220 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:25:19,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-29 05:25:19,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/51f474f9d/aeaff391ecda488399a70267093b9e27/FLAGf3ecc338c [2021-10-29 05:25:19,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/data/51f474f9d/aeaff391ecda488399a70267093b9e27 [2021-10-29 05:25:19,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:25:19,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:25:19,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:19,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:25:19,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:25:19,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:19" (1/1) ... [2021-10-29 05:25:19,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7b3c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:19, skipping insertion in model container [2021-10-29 05:25:19,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:19" (1/1) ... [2021-10-29 05:25:19,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:25:19,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:25:20,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:20,203 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:25:20,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:25:20,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:20,291 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:25:20,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:20,521 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:25:20,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20 WrapperNode [2021-10-29 05:25:20,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:20,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:25:20,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:25:20,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:25:20,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:25:20,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:25:20,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:25:20,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:25:20,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:25:20,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:25:20,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:25:20,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:25:20,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (1/1) ... [2021-10-29 05:25:20,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:20,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:25:20,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:25:20,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:25:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-29 05:25:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:25:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:25:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:25:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:25:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-29 05:25:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:25:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:25:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 05:25:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:25:20,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:25:21,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:25:21,779 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-10-29 05:25:21,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:21 BoogieIcfgContainer [2021-10-29 05:25:21,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:25:21,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:25:21,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:25:21,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:25:21,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:25:19" (1/3) ... [2021-10-29 05:25:21,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f56aad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:25:21, skipping insertion in model container [2021-10-29 05:25:21,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:20" (2/3) ... [2021-10-29 05:25:21,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f56aad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:25:21, skipping insertion in model container [2021-10-29 05:25:21,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:21" (3/3) ... [2021-10-29 05:25:21,793 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-2.i [2021-10-29 05:25:21,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:25:21,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2021-10-29 05:25:21,860 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:25:21,868 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-10-29 05:25:21,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2021-10-29 05:25:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 73 states have (on average 1.8904109589041096) internal successors, (138), 125 states have internal predecessors, (138), 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) [2021-10-29 05:25:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:25:21,919 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:21,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:25:21,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash 889508899, now seen corresponding path program 1 times [2021-10-29 05:25:21,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:21,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7367116] [2021-10-29 05:25:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:21,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:21,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:21,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:25:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:22,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:22,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:22,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:22,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:22,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7367116] [2021-10-29 05:25:22,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7367116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:22,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:22,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:25:22,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752130647] [2021-10-29 05:25:22,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:22,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:22,284 INFO L87 Difference]: Start difference. First operand has 126 states, 73 states have (on average 1.8904109589041096) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-29 05:25:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:22,562 INFO L93 Difference]: Finished difference Result 485 states and 525 transitions. [2021-10-29 05:25:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:22,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-29 05:25:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:22,593 INFO L225 Difference]: With dead ends: 485 [2021-10-29 05:25:22,594 INFO L226 Difference]: Without dead ends: 477 [2021-10-29 05:25:22,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-10-29 05:25:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 126. [2021-10-29 05:25:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 74 states have (on average 1.864864864864865) internal successors, (138), 125 states have internal predecessors, (138), 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) [2021-10-29 05:25:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-29 05:25:22,696 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 6 [2021-10-29 05:25:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:22,696 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-29 05:25:22,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-29 05:25:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-29 05:25:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:25:22,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:22,698 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:25:22,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:22,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:22,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash 889568481, now seen corresponding path program 1 times [2021-10-29 05:25:22,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:22,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832891717] [2021-10-29 05:25:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:22,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:22,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:22,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:22,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:25:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:25:23,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:23,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:23,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:23,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832891717] [2021-10-29 05:25:23,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832891717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:23,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:23,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:25:23,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113626109] [2021-10-29 05:25:23,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:23,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:23,057 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-29 05:25:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:23,479 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2021-10-29 05:25:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-29 05:25:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:23,482 INFO L225 Difference]: With dead ends: 215 [2021-10-29 05:25:23,482 INFO L226 Difference]: Without dead ends: 214 [2021-10-29 05:25:23,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-29 05:25:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 124. [2021-10-29 05:25:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 72 states have (on average 1.875) internal successors, (135), 123 states have internal predecessors, (135), 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) [2021-10-29 05:25:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-29 05:25:23,497 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 6 [2021-10-29 05:25:23,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:23,507 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-29 05:25:23,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-29 05:25:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-29 05:25:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:25:23,508 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:23,509 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:23,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:23,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:23,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash -592189806, now seen corresponding path program 1 times [2021-10-29 05:25:23,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:23,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453465210] [2021-10-29 05:25:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:23,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:23,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:23,745 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:23,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:25:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:23,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:23,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:23,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:23,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:23,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453465210] [2021-10-29 05:25:23,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453465210] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:23,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:23,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:25:23,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076593013] [2021-10-29 05:25:23,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:23,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:23,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:23,961 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:25:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:24,218 INFO L93 Difference]: Finished difference Result 472 states and 507 transitions. [2021-10-29 05:25:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:24,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-29 05:25:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:24,222 INFO L225 Difference]: With dead ends: 472 [2021-10-29 05:25:24,223 INFO L226 Difference]: Without dead ends: 472 [2021-10-29 05:25:24,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-29 05:25:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 126. [2021-10-29 05:25:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 125 states have internal predecessors, (137), 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) [2021-10-29 05:25:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-10-29 05:25:24,232 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 9 [2021-10-29 05:25:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:24,233 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-10-29 05:25:24,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:25:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-10-29 05:25:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:25:24,234 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:24,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:24,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-29 05:25:24,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:24,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -592130224, now seen corresponding path program 1 times [2021-10-29 05:25:24,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:24,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490281744] [2021-10-29 05:25:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:24,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:24,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:24,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:25:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:24,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:24,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:24,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:24,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:24,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490281744] [2021-10-29 05:25:24,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490281744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:24,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:24,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:25:24,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709347603] [2021-10-29 05:25:24,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:24,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:24,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:24,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:24,643 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:25:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:24,689 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-29 05:25:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-29 05:25:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:24,695 INFO L225 Difference]: With dead ends: 125 [2021-10-29 05:25:24,695 INFO L226 Difference]: Without dead ends: 125 [2021-10-29 05:25:24,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-29 05:25:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-29 05:25:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 74 states have (on average 1.837837837837838) internal successors, (136), 124 states have internal predecessors, (136), 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) [2021-10-29 05:25:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-10-29 05:25:24,714 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 9 [2021-10-29 05:25:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:24,715 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-10-29 05:25:24,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:25:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-10-29 05:25:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:25:24,716 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:24,716 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:24,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:24,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:24,930 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1176167536, now seen corresponding path program 1 times [2021-10-29 05:25:24,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:24,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450478227] [2021-10-29 05:25:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:24,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:24,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:24,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:24,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:25:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:25,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:25:25,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:25,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:25,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:25,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450478227] [2021-10-29 05:25:25,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450478227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:25,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:25,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-29 05:25:25,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57080897] [2021-10-29 05:25:25,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:25:25,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:25:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:25:25,242 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:25,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:25,646 INFO L93 Difference]: Finished difference Result 469 states and 506 transitions. [2021-10-29 05:25:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:25:25,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:25:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:25,651 INFO L225 Difference]: With dead ends: 469 [2021-10-29 05:25:25,651 INFO L226 Difference]: Without dead ends: 469 [2021-10-29 05:25:25,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:25:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-10-29 05:25:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 124. [2021-10-29 05:25:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.8243243243243243) internal successors, (135), 123 states have internal predecessors, (135), 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) [2021-10-29 05:25:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-29 05:25:25,665 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 10 [2021-10-29 05:25:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:25,666 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-29 05:25:25,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-29 05:25:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:25:25,667 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:25,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:25,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:25,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:25,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2136151760, now seen corresponding path program 1 times [2021-10-29 05:25:25,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:25,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256414113] [2021-10-29 05:25:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:25,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:25,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:25,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:25:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:25,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:25:25,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:26,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:26,109 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:25:26,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-29 05:25:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:26,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:30,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:30,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256414113] [2021-10-29 05:25:30,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256414113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:30,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:30,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:25:30,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204952554] [2021-10-29 05:25:30,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:25:30,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:25:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-10-29 05:25:30,397 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:31,646 INFO L93 Difference]: Finished difference Result 375 states and 406 transitions. [2021-10-29 05:25:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:25:31,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:25:31,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:31,650 INFO L225 Difference]: With dead ends: 375 [2021-10-29 05:25:31,650 INFO L226 Difference]: Without dead ends: 375 [2021-10-29 05:25:31,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-10-29 05:25:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-29 05:25:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 139. [2021-10-29 05:25:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 91 states have (on average 1.8021978021978022) internal successors, (164), 138 states have internal predecessors, (164), 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) [2021-10-29 05:25:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2021-10-29 05:25:31,657 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 11 [2021-10-29 05:25:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:31,657 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2021-10-29 05:25:31,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2021-10-29 05:25:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:25:31,658 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:31,658 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:31,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:31,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:31,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2136151761, now seen corresponding path program 1 times [2021-10-29 05:25:31,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:31,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883634728] [2021-10-29 05:25:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:31,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:31,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:31,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:31,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:25:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:32,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:25:32,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:32,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:32,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:32,187 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:25:32,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-10-29 05:25:32,201 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:25:32,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-29 05:25:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:32,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:34,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-10-29 05:25:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:34,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:34,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883634728] [2021-10-29 05:25:34,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883634728] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:34,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:34,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:25:34,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495178183] [2021-10-29 05:25:34,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:25:34,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:34,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:25:34,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-10-29 05:25:34,842 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:57,661 INFO L93 Difference]: Finished difference Result 496 states and 537 transitions. [2021-10-29 05:25:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:25:57,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:25:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:57,665 INFO L225 Difference]: With dead ends: 496 [2021-10-29 05:25:57,668 INFO L226 Difference]: Without dead ends: 496 [2021-10-29 05:25:57,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=101, Invalid=240, Unknown=1, NotChecked=0, Total=342 [2021-10-29 05:25:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-29 05:25:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 203. [2021-10-29 05:25:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 158 states have (on average 1.7784810126582278) internal successors, (281), 202 states have internal predecessors, (281), 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) [2021-10-29 05:25:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 281 transitions. [2021-10-29 05:25:57,678 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 281 transitions. Word has length 11 [2021-10-29 05:25:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:57,679 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 281 transitions. [2021-10-29 05:25:57,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 281 transitions. [2021-10-29 05:25:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:25:57,680 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:57,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:57,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:57,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:57,890 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2101455022, now seen corresponding path program 1 times [2021-10-29 05:25:57,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:57,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374069687] [2021-10-29 05:25:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:57,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:57,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:57,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:57,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:25:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:57,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:57,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:58,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:58,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:58,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:58,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374069687] [2021-10-29 05:25:58,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374069687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:58,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:58,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:25:58,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767830030] [2021-10-29 05:25:58,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:58,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:58,120 INFO L87 Difference]: Start difference. First operand 203 states and 281 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:25:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:58,627 INFO L93 Difference]: Finished difference Result 464 states and 611 transitions. [2021-10-29 05:25:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:58,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-29 05:25:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:58,631 INFO L225 Difference]: With dead ends: 464 [2021-10-29 05:25:58,631 INFO L226 Difference]: Without dead ends: 464 [2021-10-29 05:25:58,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-29 05:25:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 233. [2021-10-29 05:25:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 188 states have (on average 1.7287234042553192) internal successors, (325), 232 states have internal predecessors, (325), 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) [2021-10-29 05:25:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 325 transitions. [2021-10-29 05:25:58,644 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 325 transitions. Word has length 11 [2021-10-29 05:25:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:58,644 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 325 transitions. [2021-10-29 05:25:58,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:25:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 325 transitions. [2021-10-29 05:25:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:25:58,645 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:58,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:58,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:58,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:58,858 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2101557234, now seen corresponding path program 1 times [2021-10-29 05:25:58,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:58,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569959054] [2021-10-29 05:25:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:58,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:58,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:58,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:58,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:25:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:58,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:25:58,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:59,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:59,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:59,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569959054] [2021-10-29 05:25:59,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569959054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:59,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:59,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:25:59,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467541325] [2021-10-29 05:25:59,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:59,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:59,098 INFO L87 Difference]: Start difference. First operand 233 states and 325 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:25:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:59,215 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2021-10-29 05:25:59,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:59,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-29 05:25:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:59,217 INFO L225 Difference]: With dead ends: 284 [2021-10-29 05:25:59,217 INFO L226 Difference]: Without dead ends: 284 [2021-10-29 05:25:59,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-29 05:25:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 150. [2021-10-29 05:25:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 108 states have (on average 1.6296296296296295) internal successors, (176), 149 states have internal predecessors, (176), 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) [2021-10-29 05:25:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2021-10-29 05:25:59,224 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 11 [2021-10-29 05:25:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:59,224 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2021-10-29 05:25:59,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:25:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2021-10-29 05:25:59,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:25:59,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:59,226 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:59,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:59,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:59,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1421396652, now seen corresponding path program 1 times [2021-10-29 05:25:59,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:59,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514249196] [2021-10-29 05:25:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:59,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:59,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:59,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:59,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:25:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:59,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:25:59,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:59,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:59,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:59,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514249196] [2021-10-29 05:25:59,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514249196] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:59,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:59,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:25:59,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833130080] [2021-10-29 05:25:59,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:59,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:59,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:59,686 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:25:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:59,771 INFO L93 Difference]: Finished difference Result 252 states and 288 transitions. [2021-10-29 05:25:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:59,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-29 05:25:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:59,774 INFO L225 Difference]: With dead ends: 252 [2021-10-29 05:25:59,774 INFO L226 Difference]: Without dead ends: 250 [2021-10-29 05:25:59,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:59,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-29 05:25:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 132. [2021-10-29 05:25:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 131 states have internal predecessors, (151), 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) [2021-10-29 05:25:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2021-10-29 05:25:59,780 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 11 [2021-10-29 05:25:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:59,780 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2021-10-29 05:25:59,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:25:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2021-10-29 05:25:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:25:59,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:59,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:59,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-29 05:25:59,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:59,994 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:25:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash -720596011, now seen corresponding path program 1 times [2021-10-29 05:25:59,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:59,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761456668] [2021-10-29 05:25:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:59,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:59,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:59,996 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:59,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:26:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:00,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:26:00,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:00,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:05,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:05,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761456668] [2021-10-29 05:26:05,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761456668] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:05,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:05,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 05:26:05,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268765346] [2021-10-29 05:26:05,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:26:05,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:26:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-29 05:26:05,011 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:05,650 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2021-10-29 05:26:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:26:05,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:26:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:05,652 INFO L225 Difference]: With dead ends: 133 [2021-10-29 05:26:05,653 INFO L226 Difference]: Without dead ends: 127 [2021-10-29 05:26:05,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2021-10-29 05:26:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-29 05:26:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-29 05:26:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 86 states have (on average 1.686046511627907) internal successors, (145), 126 states have internal predecessors, (145), 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) [2021-10-29 05:26:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2021-10-29 05:26:05,657 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 12 [2021-10-29 05:26:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:05,658 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2021-10-29 05:26:05,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2021-10-29 05:26:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:26:05,659 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:05,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:05,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:05,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:05,880 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash 176240348, now seen corresponding path program 1 times [2021-10-29 05:26:05,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:05,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114896069] [2021-10-29 05:26:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:05,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:05,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:05,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:05,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 05:26:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:26:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:06,137 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 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-29 05:26:06,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-10-29 05:26:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:06,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:06,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:06,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114896069] [2021-10-29 05:26:06,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114896069] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:06,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:06,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 05:26:06,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853682956] [2021-10-29 05:26:06,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:26:06,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:26:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:26:06,267 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:06,538 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2021-10-29 05:26:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:26:06,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:26:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:06,540 INFO L225 Difference]: With dead ends: 242 [2021-10-29 05:26:06,540 INFO L226 Difference]: Without dead ends: 242 [2021-10-29 05:26:06,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:26:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-29 05:26:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 132. [2021-10-29 05:26:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 91 states have (on average 1.6483516483516483) internal successors, (150), 131 states have internal predecessors, (150), 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) [2021-10-29 05:26:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2021-10-29 05:26:06,546 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 16 [2021-10-29 05:26:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:06,547 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2021-10-29 05:26:06,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2021-10-29 05:26:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:26:06,548 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:06,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:06,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:06,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:06,758 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash 176237825, now seen corresponding path program 1 times [2021-10-29 05:26:06,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:06,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495086261] [2021-10-29 05:26:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:06,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:06,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:06,761 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:06,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 05:26:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:26:06,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:06,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:26:06,962 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 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-29 05:26:07,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-29 05:26:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:07,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:07,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:07,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495086261] [2021-10-29 05:26:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495086261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:07,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:26:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705711502] [2021-10-29 05:26:07,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:26:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:26:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:26:07,115 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:07,985 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-10-29 05:26:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:26:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:26:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:07,987 INFO L225 Difference]: With dead ends: 218 [2021-10-29 05:26:07,988 INFO L226 Difference]: Without dead ends: 218 [2021-10-29 05:26:07,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:26:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-29 05:26:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 134. [2021-10-29 05:26:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 133 states have internal predecessors, (153), 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) [2021-10-29 05:26:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-10-29 05:26:07,994 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 16 [2021-10-29 05:26:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:07,995 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-10-29 05:26:07,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-10-29 05:26:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:26:07,996 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:07,996 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:08,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:08,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:08,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 176237826, now seen corresponding path program 1 times [2021-10-29 05:26:08,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:08,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420227549] [2021-10-29 05:26:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:08,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:08,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:08,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:08,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 05:26:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:08,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:26:08,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:08,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:26:08,492 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 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-29 05:26:08,503 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:26:08,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-29 05:26:08,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-29 05:26:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:08,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:09,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:09,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420227549] [2021-10-29 05:26:09,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420227549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:09,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:09,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 05:26:09,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905622293] [2021-10-29 05:26:09,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:26:09,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:09,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:26:09,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:26:09,176 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-10-29 05:26:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:11,374 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2021-10-29 05:26:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:26:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:26:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:11,377 INFO L225 Difference]: With dead ends: 288 [2021-10-29 05:26:11,377 INFO L226 Difference]: Without dead ends: 288 [2021-10-29 05:26:11,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-29 05:26:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-29 05:26:11,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 134. [2021-10-29 05:26:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.6344086021505377) internal successors, (152), 133 states have internal predecessors, (152), 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) [2021-10-29 05:26:11,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2021-10-29 05:26:11,386 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 16 [2021-10-29 05:26:11,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:11,387 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2021-10-29 05:26:11,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-10-29 05:26:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2021-10-29 05:26:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:26:11,388 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:11,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:11,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-29 05:26:11,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:11,602 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -633106278, now seen corresponding path program 1 times [2021-10-29 05:26:11,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:11,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478924600] [2021-10-29 05:26:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:11,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:11,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:11,604 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:11,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-29 05:26:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:11,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:26:11,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:12,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:12,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:12,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478924600] [2021-10-29 05:26:12,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478924600] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:12,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:12,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-10-29 05:26:12,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247419725] [2021-10-29 05:26:12,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:26:12,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:26:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:26:12,313 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:12,563 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2021-10-29 05:26:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:26:12,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:26:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:12,565 INFO L225 Difference]: With dead ends: 133 [2021-10-29 05:26:12,565 INFO L226 Difference]: Without dead ends: 133 [2021-10-29 05:26:12,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:26:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-29 05:26:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-29 05:26:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.6129032258064515) internal successors, (150), 132 states have internal predecessors, (150), 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) [2021-10-29 05:26:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2021-10-29 05:26:12,570 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 16 [2021-10-29 05:26:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:12,571 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2021-10-29 05:26:12,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2021-10-29 05:26:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:26:12,572 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:12,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:12,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-29 05:26:12,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:12,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -633108801, now seen corresponding path program 1 times [2021-10-29 05:26:12,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:12,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319653733] [2021-10-29 05:26:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:12,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:12,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:12,788 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:12,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-29 05:26:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:12,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:26:12,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:13,046 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:26:13,056 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:26:13,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-29 05:26:13,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 05:26:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:13,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:13,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:13,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319653733] [2021-10-29 05:26:13,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319653733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:13,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:13,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 05:26:13,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377055976] [2021-10-29 05:26:13,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:26:13,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:26:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:26:13,234 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:13,565 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2021-10-29 05:26:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:26:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:26:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:13,571 INFO L225 Difference]: With dead ends: 135 [2021-10-29 05:26:13,571 INFO L226 Difference]: Without dead ends: 135 [2021-10-29 05:26:13,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:26:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-29 05:26:13,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2021-10-29 05:26:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.5934065934065933) internal successors, (145), 128 states have internal predecessors, (145), 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) [2021-10-29 05:26:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-10-29 05:26:13,580 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 16 [2021-10-29 05:26:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:13,581 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-10-29 05:26:13,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-10-29 05:26:13,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:26:13,584 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:13,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:13,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:13,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:13,803 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:13,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1860825987, now seen corresponding path program 1 times [2021-10-29 05:26:13,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:13,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356462741] [2021-10-29 05:26:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:13,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:13,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:13,807 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:13,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-29 05:26:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 05:26:14,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:14,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:26:14,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:26:14,171 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:26:14,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-29 05:26:14,200 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:26:14,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-10-29 05:26:14,385 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-29 05:26:14,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 33 [2021-10-29 05:26:14,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-29 05:26:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:14,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:19,943 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 05:26:19,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 63 [2021-10-29 05:26:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:20,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:20,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356462741] [2021-10-29 05:26:20,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356462741] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:20,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:20,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-10-29 05:26:20,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485715154] [2021-10-29 05:26:20,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:26:20,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:26:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=116, Unknown=2, NotChecked=0, Total=156 [2021-10-29 05:26:20,003 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:21,813 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-10-29 05:26:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:26:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:26:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:21,815 INFO L225 Difference]: With dead ends: 158 [2021-10-29 05:26:21,815 INFO L226 Difference]: Without dead ends: 158 [2021-10-29 05:26:21,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=87, Invalid=217, Unknown=2, NotChecked=0, Total=306 [2021-10-29 05:26:21,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-29 05:26:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 128. [2021-10-29 05:26:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 91 states have (on average 1.5824175824175823) internal successors, (144), 127 states have internal predecessors, (144), 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) [2021-10-29 05:26:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2021-10-29 05:26:21,821 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 18 [2021-10-29 05:26:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:21,821 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2021-10-29 05:26:21,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2021-10-29 05:26:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:26:21,822 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:21,822 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] [2021-10-29 05:26:21,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:22,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:22,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1547378243, now seen corresponding path program 1 times [2021-10-29 05:26:22,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:22,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906517755] [2021-10-29 05:26:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:22,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:22,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:22,025 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:22,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-29 05:26:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:22,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:26:22,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:22,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:22,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:22,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906517755] [2021-10-29 05:26:22,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906517755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:22,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:22,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:26:22,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748225307] [2021-10-29 05:26:22,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:26:22,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:26:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:22,459 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:22,759 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2021-10-29 05:26:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:26:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 05:26:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:22,760 INFO L225 Difference]: With dead ends: 151 [2021-10-29 05:26:22,761 INFO L226 Difference]: Without dead ends: 151 [2021-10-29 05:26:22,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:26:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-29 05:26:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 127. [2021-10-29 05:26:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 126 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 143 transitions. [2021-10-29 05:26:22,766 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 143 transitions. Word has length 20 [2021-10-29 05:26:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:22,766 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 143 transitions. [2021-10-29 05:26:22,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 143 transitions. [2021-10-29 05:26:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:26:22,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:22,768 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] [2021-10-29 05:26:22,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:22,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:22,978 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1547378244, now seen corresponding path program 1 times [2021-10-29 05:26:22,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:22,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125751114] [2021-10-29 05:26:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:22,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:22,980 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:22,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-29 05:26:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:26:23,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:23,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:23,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-29 05:26:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:23,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:23,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125751114] [2021-10-29 05:26:23,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125751114] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:23,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:23,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:26:23,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020349388] [2021-10-29 05:26:23,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:26:23,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:23,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:26:23,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:26:23,784 INFO L87 Difference]: Start difference. First operand 127 states and 143 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-10-29 05:26:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:24,241 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2021-10-29 05:26:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:26:24,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 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 20 [2021-10-29 05:26:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:24,242 INFO L225 Difference]: With dead ends: 132 [2021-10-29 05:26:24,242 INFO L226 Difference]: Without dead ends: 132 [2021-10-29 05:26:24,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:26:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-29 05:26:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2021-10-29 05:26:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.5604395604395604) internal successors, (142), 125 states have internal predecessors, (142), 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) [2021-10-29 05:26:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 142 transitions. [2021-10-29 05:26:24,246 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 142 transitions. Word has length 20 [2021-10-29 05:26:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:24,246 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 142 transitions. [2021-10-29 05:26:24,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-10-29 05:26:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 142 transitions. [2021-10-29 05:26:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:26:24,247 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:24,247 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] [2021-10-29 05:26:24,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:24,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:24,454 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:24,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash -153313729, now seen corresponding path program 1 times [2021-10-29 05:26:24,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:24,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004528082] [2021-10-29 05:26:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:24,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:24,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:24,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-29 05:26:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:24,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:26:24,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:24,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:26:24,907 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:26:24,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-29 05:26:25,159 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-29 05:26:25,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 36 [2021-10-29 05:26:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:25,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:29,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:29,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004528082] [2021-10-29 05:26:29,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004528082] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:29,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:29,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-10-29 05:26:29,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662326632] [2021-10-29 05:26:29,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:26:29,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:26:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2021-10-29 05:26:29,390 INFO L87 Difference]: Start difference. First operand 126 states and 142 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:58,059 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2021-10-29 05:26:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:26:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 05:26:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:58,060 INFO L225 Difference]: With dead ends: 153 [2021-10-29 05:26:58,061 INFO L226 Difference]: Without dead ends: 153 [2021-10-29 05:26:58,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=54, Invalid=99, Unknown=3, NotChecked=0, Total=156 [2021-10-29 05:26:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-29 05:26:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2021-10-29 05:26:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 128 states have internal predecessors, (145), 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) [2021-10-29 05:26:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-10-29 05:26:58,065 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 20 [2021-10-29 05:26:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:58,065 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-10-29 05:26:58,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-10-29 05:26:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:26:58,066 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:58,066 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] [2021-10-29 05:26:58,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:58,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:58,270 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:26:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash -457758072, now seen corresponding path program 1 times [2021-10-29 05:26:58,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:58,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59549722] [2021-10-29 05:26:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:58,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:58,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:58,272 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:58,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-29 05:26:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:58,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:26:58,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:01,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:17,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:17,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59549722] [2021-10-29 05:27:17,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59549722] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:17,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:17,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-29 05:27:17,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405744823] [2021-10-29 05:27:17,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:27:17,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:27:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=166, Unknown=5, NotChecked=0, Total=210 [2021-10-29 05:27:17,582 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 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) [2021-10-29 05:27:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:29,285 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-10-29 05:27:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:27:29,286 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 05:27:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:29,287 INFO L225 Difference]: With dead ends: 130 [2021-10-29 05:27:29,287 INFO L226 Difference]: Without dead ends: 118 [2021-10-29 05:27:29,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=68, Invalid=268, Unknown=6, NotChecked=0, Total=342 [2021-10-29 05:27:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-29 05:27:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-29 05:27:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 83 states have (on average 1.6024096385542168) internal successors, (133), 117 states have internal predecessors, (133), 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) [2021-10-29 05:27:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2021-10-29 05:27:29,292 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 21 [2021-10-29 05:27:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:29,293 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2021-10-29 05:27:29,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 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) [2021-10-29 05:27:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2021-10-29 05:27:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:27:29,294 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:29,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:29,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:29,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:29,510 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:27:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 971808068, now seen corresponding path program 1 times [2021-10-29 05:27:29,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:29,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71162250] [2021-10-29 05:27:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:29,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:29,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:29,513 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:29,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-29 05:27:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:29,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 05:27:29,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:30,065 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 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-29 05:27:30,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-29 05:27:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:30,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:30,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:30,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71162250] [2021-10-29 05:27:30,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71162250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:30,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:30,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 12 [2021-10-29 05:27:30,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798862708] [2021-10-29 05:27:30,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:27:30,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:27:30,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:27:30,441 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 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) [2021-10-29 05:27:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:31,548 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2021-10-29 05:27:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:27:31,549 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-29 05:27:31,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:31,550 INFO L225 Difference]: With dead ends: 176 [2021-10-29 05:27:31,550 INFO L226 Difference]: Without dead ends: 176 [2021-10-29 05:27:31,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:27:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-29 05:27:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 117. [2021-10-29 05:27:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 83 states have (on average 1.5903614457831325) internal successors, (132), 116 states have internal predecessors, (132), 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) [2021-10-29 05:27:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-10-29 05:27:31,556 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 22 [2021-10-29 05:27:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:31,556 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-10-29 05:27:31,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 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) [2021-10-29 05:27:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-10-29 05:27:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:27:31,557 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:31,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:31,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:31,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:31,762 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:27:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash 971808069, now seen corresponding path program 1 times [2021-10-29 05:27:31,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:31,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929045309] [2021-10-29 05:27:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:31,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:31,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:31,764 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:31,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-29 05:27:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:32,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 05:27:32,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:32,328 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 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-29 05:27:32,339 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:27:32,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-29 05:27:32,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-29 05:27:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:32,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:33,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-29 05:27:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:33,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:33,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929045309] [2021-10-29 05:27:33,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929045309] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:33,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:33,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2021-10-29 05:27:33,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984065952] [2021-10-29 05:27:33,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 05:27:33,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 05:27:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:27:33,334 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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) [2021-10-29 05:27:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:35,122 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2021-10-29 05:27:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:27:35,124 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-29 05:27:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:35,125 INFO L225 Difference]: With dead ends: 163 [2021-10-29 05:27:35,125 INFO L226 Difference]: Without dead ends: 163 [2021-10-29 05:27:35,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-10-29 05:27:35,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-29 05:27:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 116. [2021-10-29 05:27:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 83 states have (on average 1.5783132530120483) internal successors, (131), 115 states have internal predecessors, (131), 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) [2021-10-29 05:27:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-10-29 05:27:35,129 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 22 [2021-10-29 05:27:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:35,129 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-10-29 05:27:35,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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) [2021-10-29 05:27:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-10-29 05:27:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:27:35,130 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:35,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:35,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:35,330 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:27:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash 61279070, now seen corresponding path program 1 times [2021-10-29 05:27:35,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:35,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123541834] [2021-10-29 05:27:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:35,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:35,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:35,333 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:35,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-29 05:27:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:35,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 05:27:35,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:35,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:27:35,900 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:27:35,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-29 05:27:36,158 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-29 05:27:36,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 50 [2021-10-29 05:27:36,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-10-29 05:27:37,112 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-29 05:27:37,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 44 [2021-10-29 05:27:37,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:37,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 53 [2021-10-29 05:27:37,322 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:27:37,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 103 [2021-10-29 05:27:38,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:38,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 60 [2021-10-29 05:27:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:38,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:39,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:39,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-29 05:27:41,129 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_1)))) (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) c_ULTIMATE.start_entry_point_~intf~2.base))) c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32))))))))))) (_ bv1 1)))) is different from false [2021-10-29 05:27:43,160 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_1))))) (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) c_ULTIMATE.start_entry_point_~intf~2.base))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-10-29 05:27:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:55,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:55,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123541834] [2021-10-29 05:27:55,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123541834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:55,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:55,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 26 [2021-10-29 05:27:55,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559898077] [2021-10-29 05:27:55,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-29 05:27:55,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-29 05:27:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=520, Unknown=7, NotChecked=94, Total=702 [2021-10-29 05:27:55,787 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:28:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:28:14,616 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2021-10-29 05:28:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-29 05:28:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 05:28:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:28:14,618 INFO L225 Difference]: With dead ends: 174 [2021-10-29 05:28:14,618 INFO L226 Difference]: Without dead ends: 174 [2021-10-29 05:28:14,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=288, Invalid=1045, Unknown=7, NotChecked=142, Total=1482 [2021-10-29 05:28:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-29 05:28:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 115. [2021-10-29 05:28:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 83 states have (on average 1.5662650602409638) internal successors, (130), 114 states have internal predecessors, (130), 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) [2021-10-29 05:28:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2021-10-29 05:28:14,625 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 23 [2021-10-29 05:28:14,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:28:14,625 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-10-29 05:28:14,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:28:14,626 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2021-10-29 05:28:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:28:14,626 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:28:14,627 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:28:14,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-29 05:28:14,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:28:14,828 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:28:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:28:14,829 INFO L85 PathProgramCache]: Analyzing trace with hash 61279071, now seen corresponding path program 1 times [2021-10-29 05:28:14,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:28:14,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329449399] [2021-10-29 05:28:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:28:14,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:28:14,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:28:14,830 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:28:14,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-29 05:28:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:28:15,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-29 05:28:15,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:28:15,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:28:15,427 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:28:15,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-29 05:28:15,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:28:15,726 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-29 05:28:15,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-10-29 05:28:15,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:28:15,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-29 05:28:16,560 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-29 05:28:16,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 93 [2021-10-29 05:28:16,599 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-10-29 05:28:16,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 74 [2021-10-29 05:28:16,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:16,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-29 05:28:16,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:16,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-29 05:28:17,508 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-29 05:28:17,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-29 05:28:17,526 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-29 05:28:17,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-29 05:28:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:28:17,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:28:19,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:28:19,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:28:19,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:28:19,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-29 05:28:31,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 89 [2021-10-29 05:28:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:28:38,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:28:38,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329449399] [2021-10-29 05:28:38,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329449399] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:28:38,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:28:38,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 16] imperfect sequences [] total 30 [2021-10-29 05:28:38,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082892228] [2021-10-29 05:28:38,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-29 05:28:38,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:28:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-29 05:28:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2021-10-29 05:28:38,128 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:33,480 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2021-10-29 05:29:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 05:29:33,481 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 05:29:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:33,482 INFO L225 Difference]: With dead ends: 207 [2021-10-29 05:29:33,482 INFO L226 Difference]: Without dead ends: 207 [2021-10-29 05:29:33,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=466, Invalid=1790, Unknown=0, NotChecked=0, Total=2256 [2021-10-29 05:29:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-29 05:29:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 114. [2021-10-29 05:29:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 113 states have internal predecessors, (129), 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) [2021-10-29 05:29:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2021-10-29 05:29:33,488 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 23 [2021-10-29 05:29:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:33,488 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2021-10-29 05:29:33,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2021-10-29 05:29:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:29:33,490 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:33,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:33,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:33,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:33,694 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1240354625, now seen corresponding path program 1 times [2021-10-29 05:29:33,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:33,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178741578] [2021-10-29 05:29:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:33,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:33,696 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:33,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-29 05:29:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:34,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:29:34,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:34,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:34,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:34,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178741578] [2021-10-29 05:29:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178741578] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:34,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:29:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830677116] [2021-10-29 05:29:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:29:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:29:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:29:34,373 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-29 05:29:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:34,799 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2021-10-29 05:29:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:29:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 05:29:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:34,801 INFO L225 Difference]: With dead ends: 171 [2021-10-29 05:29:34,801 INFO L226 Difference]: Without dead ends: 171 [2021-10-29 05:29:34,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:29:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-29 05:29:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 112. [2021-10-29 05:29:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-10-29 05:29:34,806 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 25 [2021-10-29 05:29:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:34,806 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-10-29 05:29:34,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-10-29 05:29:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-10-29 05:29:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:29:34,807 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:34,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:34,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-29 05:29:35,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:35,043 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1240354624, now seen corresponding path program 1 times [2021-10-29 05:29:35,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:35,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545020008] [2021-10-29 05:29:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:35,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:35,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:35,045 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:35,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-29 05:29:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:35,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 05:29:35,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:35,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:36,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-29 05:29:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:36,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:36,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545020008] [2021-10-29 05:29:36,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545020008] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:36,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:36,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 05:29:36,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524808794] [2021-10-29 05:29:36,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:29:36,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:29:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:29:36,526 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:37,348 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2021-10-29 05:29:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:29:37,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 05:29:37,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:37,351 INFO L225 Difference]: With dead ends: 157 [2021-10-29 05:29:37,351 INFO L226 Difference]: Without dead ends: 157 [2021-10-29 05:29:37,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:29:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-29 05:29:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2021-10-29 05:29:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 109 states have internal predecessors, (125), 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) [2021-10-29 05:29:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-10-29 05:29:37,355 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 25 [2021-10-29 05:29:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:37,356 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-10-29 05:29:37,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-10-29 05:29:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:29:37,357 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:37,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:37,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:37,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:37,570 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1793278796, now seen corresponding path program 1 times [2021-10-29 05:29:37,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:37,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267445585] [2021-10-29 05:29:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:37,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:37,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:37,573 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:37,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-29 05:29:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:38,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:29:38,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:38,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:29:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:38,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:38,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:38,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267445585] [2021-10-29 05:29:38,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267445585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:38,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:38,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:29:38,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821205544] [2021-10-29 05:29:38,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:29:38,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:29:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:29:38,462 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:39,042 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2021-10-29 05:29:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:29:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-29 05:29:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:39,044 INFO L225 Difference]: With dead ends: 176 [2021-10-29 05:29:39,044 INFO L226 Difference]: Without dead ends: 176 [2021-10-29 05:29:39,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:29:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-29 05:29:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-10-29 05:29:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 105 states have internal predecessors, (121), 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) [2021-10-29 05:29:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2021-10-29 05:29:39,047 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 28 [2021-10-29 05:29:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:39,047 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2021-10-29 05:29:39,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2021-10-29 05:29:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:29:39,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:39,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:39,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:39,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:39,248 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1793278795, now seen corresponding path program 1 times [2021-10-29 05:29:39,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:39,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687547591] [2021-10-29 05:29:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:39,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:39,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:39,250 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:39,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-29 05:29:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:39,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:29:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:40,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:29:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:40,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:40,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:40,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687547591] [2021-10-29 05:29:40,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687547591] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:40,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:40,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:29:40,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450228868] [2021-10-29 05:29:40,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:29:40,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:29:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:29:40,500 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-10-29 05:29:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:41,730 INFO L93 Difference]: Finished difference Result 196 states and 215 transitions. [2021-10-29 05:29:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:29:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-29 05:29:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:41,733 INFO L225 Difference]: With dead ends: 196 [2021-10-29 05:29:41,733 INFO L226 Difference]: Without dead ends: 196 [2021-10-29 05:29:41,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:29:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-29 05:29:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 102. [2021-10-29 05:29:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 101 states have internal predecessors, (117), 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) [2021-10-29 05:29:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-10-29 05:29:41,740 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 28 [2021-10-29 05:29:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:41,741 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-10-29 05:29:41,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-10-29 05:29:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-10-29 05:29:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-29 05:29:41,742 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:41,742 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] [2021-10-29 05:29:41,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:41,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:41,956 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash 941939384, now seen corresponding path program 1 times [2021-10-29 05:29:41,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:41,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875187988] [2021-10-29 05:29:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:41,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:41,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:41,958 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:41,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-29 05:29:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:42,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:29:42,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:42,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:42,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:42,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875187988] [2021-10-29 05:29:42,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875187988] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:42,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:42,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:29:42,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492995294] [2021-10-29 05:29:42,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:29:42,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:29:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:29:42,741 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-29 05:29:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:43,055 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-29 05:29:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:29:43,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-10-29 05:29:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:43,056 INFO L225 Difference]: With dead ends: 140 [2021-10-29 05:29:43,057 INFO L226 Difference]: Without dead ends: 140 [2021-10-29 05:29:43,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:29:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-29 05:29:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 102. [2021-10-29 05:29:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 101 states have internal predecessors, (116), 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) [2021-10-29 05:29:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-10-29 05:29:43,060 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 31 [2021-10-29 05:29:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:43,061 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-10-29 05:29:43,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-29 05:29:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-10-29 05:29:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-29 05:29:43,062 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:43,062 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] [2021-10-29 05:29:43,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:43,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:43,281 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash 941939385, now seen corresponding path program 1 times [2021-10-29 05:29:43,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:43,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121119611] [2021-10-29 05:29:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:43,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:43,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:43,282 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:43,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-29 05:29:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:43,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:44,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:44,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-29 05:29:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:44,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:44,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121119611] [2021-10-29 05:29:44,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121119611] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:44,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:44,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:29:44,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148232683] [2021-10-29 05:29:44,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:29:44,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:29:44,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:29:44,658 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:45,222 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-10-29 05:29:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:29:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-29 05:29:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:45,223 INFO L225 Difference]: With dead ends: 120 [2021-10-29 05:29:45,224 INFO L226 Difference]: Without dead ends: 120 [2021-10-29 05:29:45,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:29:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-29 05:29:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2021-10-29 05:29:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 100 states have internal predecessors, (114), 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) [2021-10-29 05:29:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2021-10-29 05:29:45,226 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 31 [2021-10-29 05:29:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:45,227 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2021-10-29 05:29:45,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2021-10-29 05:29:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:29:45,227 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:45,227 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] [2021-10-29 05:29:45,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:45,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:45,430 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash -864617255, now seen corresponding path program 1 times [2021-10-29 05:29:45,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:45,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114643425] [2021-10-29 05:29:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:45,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:45,432 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:45,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-29 05:29:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:46,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:46,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:46,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:46,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:46,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114643425] [2021-10-29 05:29:46,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114643425] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:46,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:46,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:29:46,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611395179] [2021-10-29 05:29:46,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:29:46,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:29:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:29:46,190 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:46,215 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-10-29 05:29:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:29:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 05:29:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:46,217 INFO L225 Difference]: With dead ends: 151 [2021-10-29 05:29:46,217 INFO L226 Difference]: Without dead ends: 151 [2021-10-29 05:29:46,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:29:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-29 05:29:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2021-10-29 05:29:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 104 states have internal predecessors, (118), 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) [2021-10-29 05:29:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2021-10-29 05:29:46,221 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 32 [2021-10-29 05:29:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:46,222 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2021-10-29 05:29:46,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2021-10-29 05:29:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:29:46,223 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:46,223 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:46,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-29 05:29:46,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:46,437 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1093510787, now seen corresponding path program 1 times [2021-10-29 05:29:46,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:46,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972774139] [2021-10-29 05:29:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:46,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:46,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:46,439 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:46,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-29 05:29:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:47,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:47,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:47,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:47,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:47,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972774139] [2021-10-29 05:29:47,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972774139] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:47,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:47,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:29:47,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343514598] [2021-10-29 05:29:47,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:29:47,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:29:47,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:29:47,322 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-10-29 05:29:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:47,364 INFO L93 Difference]: Finished difference Result 195 states and 213 transitions. [2021-10-29 05:29:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:29:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-10-29 05:29:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:47,366 INFO L225 Difference]: With dead ends: 195 [2021-10-29 05:29:47,366 INFO L226 Difference]: Without dead ends: 195 [2021-10-29 05:29:47,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:29:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-29 05:29:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 107. [2021-10-29 05:29:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.348314606741573) internal successors, (120), 106 states have internal predecessors, (120), 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) [2021-10-29 05:29:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-29 05:29:47,370 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 33 [2021-10-29 05:29:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:47,371 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-29 05:29:47,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-10-29 05:29:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-29 05:29:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:29:47,371 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:47,371 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:47,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:47,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:47,572 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:47,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1034347815, now seen corresponding path program 1 times [2021-10-29 05:29:47,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:47,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453165602] [2021-10-29 05:29:47,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:47,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:47,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:47,574 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:47,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-29 05:29:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:48,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-29 05:29:48,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:48,442 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 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-29 05:29:48,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:48,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-10-29 05:29:48,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-29 05:29:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:48,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:55,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:55,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453165602] [2021-10-29 05:29:55,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453165602] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:55,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:55,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 16 [2021-10-29 05:29:55,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984837854] [2021-10-29 05:29:55,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 05:29:55,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 05:29:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=223, Unknown=3, NotChecked=0, Total=272 [2021-10-29 05:29:55,465 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 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) [2021-10-29 05:29:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:57,768 INFO L93 Difference]: Finished difference Result 198 states and 209 transitions. [2021-10-29 05:29:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 05:29:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 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 33 [2021-10-29 05:29:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:57,770 INFO L225 Difference]: With dead ends: 198 [2021-10-29 05:29:57,770 INFO L226 Difference]: Without dead ends: 198 [2021-10-29 05:29:57,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=230, Invalid=579, Unknown=3, NotChecked=0, Total=812 [2021-10-29 05:29:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-29 05:29:57,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 114. [2021-10-29 05:29:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 113 states have internal predecessors, (128), 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) [2021-10-29 05:29:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2021-10-29 05:29:57,775 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 33 [2021-10-29 05:29:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:57,775 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2021-10-29 05:29:57,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 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) [2021-10-29 05:29:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2021-10-29 05:29:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:29:57,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:57,777 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:57,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:57,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:57,995 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:29:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1034347814, now seen corresponding path program 1 times [2021-10-29 05:29:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:57,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65597635] [2021-10-29 05:29:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:57,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:57,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:57,997 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:57,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-29 05:29:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:58,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-29 05:29:58,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:58,978 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:29:58,993 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 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-29 05:29:59,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:59,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:29:59,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:59,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-29 05:29:59,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-29 05:29:59,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-29 05:29:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:29:59,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:30:02,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-29 05:30:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:02,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:30:02,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65597635] [2021-10-29 05:30:02,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65597635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:30:02,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:30:02,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-10-29 05:30:02,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498150906] [2021-10-29 05:30:02,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-29 05:30:02,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:30:02,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-29 05:30:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-10-29 05:30:02,387 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 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) [2021-10-29 05:30:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:30:05,909 INFO L93 Difference]: Finished difference Result 224 states and 235 transitions. [2021-10-29 05:30:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 05:30:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 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 33 [2021-10-29 05:30:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:30:05,912 INFO L225 Difference]: With dead ends: 224 [2021-10-29 05:30:05,912 INFO L226 Difference]: Without dead ends: 224 [2021-10-29 05:30:05,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2021-10-29 05:30:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-29 05:30:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 114. [2021-10-29 05:30:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 113 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:30:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-10-29 05:30:05,915 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 33 [2021-10-29 05:30:05,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:30:05,915 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-10-29 05:30:05,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 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) [2021-10-29 05:30:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-10-29 05:30:05,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 05:30:05,916 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:30:05,916 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] [2021-10-29 05:30:05,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-29 05:30:06,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:30:06,117 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:30:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:30:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2000011076, now seen corresponding path program 1 times [2021-10-29 05:30:06,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:30:06,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201388704] [2021-10-29 05:30:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:06,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:30:06,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:30:06,119 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:30:06,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-29 05:30:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:07,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-29 05:30:07,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:30:07,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:30:07,132 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:30:07,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-29 05:30:07,349 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-29 05:30:07,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2021-10-29 05:30:07,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-10-29 05:30:08,218 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-29 05:30:08,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 47 [2021-10-29 05:30:08,408 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:30:08,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 60 [2021-10-29 05:30:09,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:09,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:30:09,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:09,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:09,615 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-29 05:30:09,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 72 [2021-10-29 05:30:10,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2021-10-29 05:30:10,562 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:10,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 67 [2021-10-29 05:30:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:30:10,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:30:24,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 72 [2021-10-29 05:30:26,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:30:26,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-29 05:31:04,759 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse4 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse4))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_4)))) (.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse2 c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) (select .cse1 .cse2)))) .cse4))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-29 05:31:21,034 WARN L207 SmtUtils]: Spent 16.21 s on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-10-29 05:31:21,035 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-10-29 05:31:21,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 9034 treesize of output 5117 [2021-10-29 05:31:21,240 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-10-29 05:31:21,241 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 5173 treesize of output 4927 [2021-10-29 05:31:32,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2234 treesize of output 2218 [2021-10-29 05:32:30,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-29 05:32:30,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 255 [2021-10-29 05:32:31,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 182 [2021-10-29 05:32:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:32:51,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:51,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201388704] [2021-10-29 05:32:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201388704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:51,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:51,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 18] imperfect sequences [] total 34 [2021-10-29 05:32:51,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681980136] [2021-10-29 05:32:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-29 05:32:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-29 05:32:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=969, Unknown=28, NotChecked=64, Total=1190 [2021-10-29 05:32:51,692 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 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) [2021-10-29 05:33:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:10,117 INFO L93 Difference]: Finished difference Result 192 states and 203 transitions. [2021-10-29 05:33:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-29 05:33:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 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 34 [2021-10-29 05:33:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:10,119 INFO L225 Difference]: With dead ends: 192 [2021-10-29 05:33:10,119 INFO L226 Difference]: Without dead ends: 192 [2021-10-29 05:33:10,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 84.9s TimeCoverageRelationStatistics Valid=613, Invalid=2225, Unknown=28, NotChecked=104, Total=2970 [2021-10-29 05:33:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-29 05:33:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 115. [2021-10-29 05:33:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 114 states have internal predecessors, (129), 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) [2021-10-29 05:33:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-10-29 05:33:10,124 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 34 [2021-10-29 05:33:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:10,124 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-10-29 05:33:10,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 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) [2021-10-29 05:33:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-10-29 05:33:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 05:33:10,124 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:10,125 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] [2021-10-29 05:33:10,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:10,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:33:10,325 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-29 05:33:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2000011075, now seen corresponding path program 1 times [2021-10-29 05:33:10,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:33:10,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146967409] [2021-10-29 05:33:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:10,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:33:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:33:10,327 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:33:10,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-29 05:33:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:11,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-29 05:33:11,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:11,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:33:11,525 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:33:11,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-29 05:33:11,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:33:11,773 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-29 05:33:11,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-10-29 05:33:11,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:33:12,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-29 05:33:12,516 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-29 05:33:12,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-10-29 05:33:12,550 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-29 05:33:12,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-10-29 05:33:12,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:12,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-29 05:33:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:12,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-29 05:33:13,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:13,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:13,890 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-10-29 05:33:13,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-10-29 05:33:13,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:13,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:13,920 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-29 05:33:13,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-10-29 05:33:14,798 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-29 05:33:14,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-29 05:33:14,820 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-29 05:33:14,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-29 05:33:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:14,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:28,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:28,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-10-29 05:33:28,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:28,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-10-29 05:33:30,835 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_5))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_6))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 v_prenex_9)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 v_prenex_8))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_6))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_5)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd .cse9 (_ bv7 32)) (bvadd .cse9 (_ bv8 32)))))) is different from false [2021-10-29 05:33:33,146 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse4 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_6))) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse2 (store (store (select .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse6 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_5)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 c_ULTIMATE.start_entry_point_~intf~2.base) .cse6 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse5)) (bvadd (select .cse2 .cse5) (_ bv4294967292 32)))))))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32))) (let ((.cse15 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse16 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse15 (store (select |c_#memory_$Pointer$.base| .cse15) .cse16 v_DerPreprocessor_5))) (.cse7 (store |c_#memory_$Pointer$.offset| .cse15 (store (select |c_#memory_$Pointer$.offset| .cse15) .cse16 v_DerPreprocessor_6))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse8 (store (store (select .cse7 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 v_prenex_9)) (.cse12 (store (store (select .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 v_prenex_8))) (let ((.cse9 (select .cse12 .cse13)) (.cse10 (bvadd (_ bv4294967292 32) (select .cse8 .cse13)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse7 c_ULTIMATE.start_entry_point_~hdev~0.base .cse8) .cse9) .cse10)) (select |c_#length| (select (select (store .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base .cse12) .cse9) .cse10))))))))) is different from false [2021-10-29 05:33:50,186 WARN L207 SmtUtils]: Spent 16.71 s on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2021-10-29 05:33:50,187 INFO L354 Elim1Store]: treesize reduction 448, result has 10.4 percent of original size [2021-10-29 05:33:50,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51274 treesize of output 39089 [2021-10-29 05:34:06,629 WARN L207 SmtUtils]: Spent 16.32 s on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2021-10-29 05:34:06,629 INFO L354 Elim1Store]: treesize reduction 168, result has 42.5 percent of original size [2021-10-29 05:34:06,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 340117 treesize of output 208480 [2021-10-29 05:34:07,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:07,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 210056 treesize of output 201366 [2021-10-29 05:34:07,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:07,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 201366 treesize of output 192666 [2021-10-29 05:34:08,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:34:08,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146967409] [2021-10-29 05:34:08,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:34:08,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [125288500] [2021-10-29 05:34:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:34:08,572 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:34:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:34:08,579 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:34:08,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-10-29 05:34:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:34:10,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-29 05:34:10,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:34:10,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:34:10,241 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:34:10,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-29 05:34:10,430 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-29 05:34:10,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-10-29 05:34:10,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:34:10,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-29 05:34:10,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:34:10,948 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-29 05:34:10,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-10-29 05:34:10,999 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-29 05:34:10,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-10-29 05:34:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:11,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-29 05:34:11,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:11,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-29 05:34:12,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:12,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:12,126 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-29 05:34:12,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 75 [2021-10-29 05:34:12,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:12,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:12,171 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-10-29 05:34:12,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 97 [2021-10-29 05:34:12,747 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-29 05:34:12,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-29 05:34:12,769 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-29 05:34:12,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-29 05:34:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:34:12,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:34:13,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:13,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-10-29 05:34:13,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:13,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-10-29 05:34:15,501 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_7))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_8))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_prenex_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_8))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 v_prenex_11))) (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_7)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 v_prenex_10) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd .cse9 (_ bv7 32)) (bvadd (_ bv8 32) .cse9))))) is different from false [2021-10-29 05:34:50,408 INFO L354 Elim1Store]: treesize reduction 467, result has 6.6 percent of original size [2021-10-29 05:34:50,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 411690 treesize of output 313246 [2021-10-29 05:35:07,130 WARN L207 SmtUtils]: Spent 16.37 s on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-10-29 05:35:07,131 INFO L354 Elim1Store]: treesize reduction 204, result has 30.1 percent of original size [2021-10-29 05:35:07,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21774204 treesize of output 13336611 [2021-10-29 05:35:25,061 WARN L207 SmtUtils]: Spent 17.93 s on a formula simplification that was a NOOP. DAG size: 993 [2021-10-29 05:35:42,360 WARN L207 SmtUtils]: Spent 17.30 s on a formula simplification that was a NOOP. DAG size: 986 [2021-10-29 05:35:42,755 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-10-29 05:35:42,757 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 13434923 treesize of output 12877893 [2021-10-29 05:35:59,081 WARN L207 SmtUtils]: Spent 16.32 s on a formula simplification that was a NOOP. DAG size: 1002 [2021-10-29 05:36:14,074 WARN L207 SmtUtils]: Spent 14.99 s on a formula simplification that was a NOOP. DAG size: 995 [2021-10-29 05:36:14,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:14,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12877885 treesize of output 12320851 [2021-10-29 05:36:29,479 WARN L207 SmtUtils]: Spent 15.21 s on a formula simplification that was a NOOP. DAG size: 1003 [2021-10-29 05:36:30,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:36:30,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12446572] [2021-10-29 05:36:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:36:30,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:36:30,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:36:30,358 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:36:30,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-29 05:36:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:36:31,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-29 05:36:31,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:36:31,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:36:31,407 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:36:31,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-29 05:36:31,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:36:31,596 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-29 05:36:31,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-10-29 05:36:31,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:36:31,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-29 05:36:31,973 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-29 05:36:31,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-10-29 05:36:32,005 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-29 05:36:32,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-10-29 05:36:32,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:36:32,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-29 05:36:32,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:36:32,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-29 05:36:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:36:32,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:36:32,974 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-10-29 05:36:32,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-10-29 05:36:32,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:36:32,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:36:33,000 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-29 05:36:33,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-10-29 05:36:33,462 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-29 05:36:33,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-29 05:36:33,488 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-29 05:36:33,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-29 05:36:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:33,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:36:34,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:34,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-10-29 05:36:34,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:34,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-10-29 05:36:36,177 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse3 v_DerPreprocessor_10))) (.cse4 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse2 (store (store (select .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse4 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse5 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse3 v_DerPreprocessor_9)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse4 c_ULTIMATE.start_entry_point_~intf~2.base) .cse5 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse4)) (bvadd (_ bv4294967292 32) (select .cse2 .cse4)))))))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse14 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse14 v_DerPreprocessor_9))) (.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse14 v_DerPreprocessor_10))) (.cse12 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse13 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse7 (store (store (select .cse6 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse12 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse13 v_prenex_13)) (.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse12 c_ULTIMATE.start_entry_point_~intf~2.base) .cse13 v_prenex_12))) (let ((.cse8 (select .cse11 .cse12)) (.cse9 (bvadd (_ bv4294967292 32) (select .cse7 .cse12)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse6 c_ULTIMATE.start_entry_point_~hdev~0.base .cse7) .cse8) .cse9)) (select |c_#length| (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) .cse8) .cse9))))))))) is different from false [2021-10-29 05:36:38,336 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse9 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse8 (store (select |c_#memory_$Pointer$.base| .cse8) .cse9 v_DerPreprocessor_9))) (.cse0 (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) .cse9 v_DerPreprocessor_10))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 v_prenex_13)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 v_prenex_12))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse10 (let ((.cse13 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse14 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse13 (store (select |c_#memory_$Pointer$.offset| .cse13) .cse14 v_DerPreprocessor_10))) (.cse15 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse16 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse12 (store (store (select .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse15 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse16 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base .cse12) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse13 (store (select |c_#memory_$Pointer$.base| .cse13) .cse14 v_DerPreprocessor_9)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse15 c_ULTIMATE.start_entry_point_~intf~2.base) .cse16 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse15)) (bvadd (_ bv4294967292 32) (select .cse12 .cse15)))))))) (bvule (bvadd .cse10 (_ bv7 32)) (bvadd (_ bv8 32) .cse10))))) is different from false [2021-10-29 05:36:55,518 WARN L207 SmtUtils]: Spent 16.87 s on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2021-10-29 05:36:55,518 INFO L354 Elim1Store]: treesize reduction 448, result has 10.4 percent of original size [2021-10-29 05:36:55,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102762 treesize of output 78257 [2021-10-29 05:37:12,115 WARN L207 SmtUtils]: Spent 16.48 s on a formula simplification. DAG size of input: 65 DAG size of output: 28 [2021-10-29 05:37:12,116 INFO L354 Elim1Store]: treesize reduction 240, result has 17.8 percent of original size [2021-10-29 05:37:12,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2721685 treesize of output 1667096 [2021-10-29 05:37:15,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:37:15,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1679360 treesize of output 1609750 [2021-10-29 05:37:18,028 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:37:18,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1609750 treesize of output 1540140 [2021-10-29 05:37:20,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:37:20,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:37:20,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:37:20,195 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:37:20,196 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:37:20,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-29 05:37:20,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:37:20,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:37:20,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:37:20,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:37:20,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:37:20,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:37:20,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:37:20,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 05:37:20,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-29 05:37:20,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-29 05:37:20,206 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-29 05:37:20,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-29 05:37:20,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-29 05:37:20,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-29 05:37:20,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-29 05:37:20,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-29 05:37:20,207 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-29 05:37:20,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-29 05:37:20,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-29 05:37:20,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-29 05:37:20,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-29 05:37:20,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-29 05:37:20,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-29 05:37:20,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-29 05:37:20,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-29 05:37:20,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-29 05:37:20,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-29 05:37:20,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-29 05:37:20,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-29 05:37:20,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-29 05:37:20,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-29 05:37:20,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-29 05:37:20,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-29 05:37:20,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-29 05:37:20,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-29 05:37:20,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:37:20,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:37:20,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-29 05:37:20,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2021-10-29 05:37:20,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-29 05:37:20,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:37:20,838 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-29 05:37:20,841 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:37:20,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:37:20 BoogieIcfgContainer [2021-10-29 05:37:20,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:37:20,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:37:20,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:37:20,856 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:37:20,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:21" (3/4) ... [2021-10-29 05:37:20,859 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:37:20,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:37:20,860 INFO L168 Benchmark]: Toolchain (without parser) took 721424.46 ms. Allocated memory was 67.1 MB in the beginning and 547.4 MB in the end (delta: 480.2 MB). Free memory was 45.3 MB in the beginning and 398.0 MB in the end (delta: -352.8 MB). Peak memory consumption was 127.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:20,861 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:20,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1085.47 ms. Allocated memory was 67.1 MB in the beginning and 92.3 MB in the end (delta: 25.2 MB). Free memory was 45.0 MB in the beginning and 73.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:20,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.28 ms. Allocated memory is still 92.3 MB. Free memory was 73.1 MB in the beginning and 70.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:20,862 INFO L168 Benchmark]: Boogie Preprocessor took 49.71 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 67.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:20,862 INFO L168 Benchmark]: RCFGBuilder took 1090.16 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 68.3 MB in the end (delta: -488.7 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:20,862 INFO L168 Benchmark]: TraceAbstraction took 719070.12 ms. Allocated memory was 92.3 MB in the beginning and 547.4 MB in the end (delta: 455.1 MB). Free memory was 67.9 MB in the beginning and 398.0 MB in the end (delta: -330.2 MB). Peak memory consumption was 360.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:37:20,862 INFO L168 Benchmark]: Witness Printer took 3.80 ms. Allocated memory is still 547.4 MB. Free memory is still 398.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:37:20,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1085.47 ms. Allocated memory was 67.1 MB in the beginning and 92.3 MB in the end (delta: 25.2 MB). Free memory was 45.0 MB in the beginning and 73.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.28 ms. Allocated memory is still 92.3 MB. Free memory was 73.1 MB in the beginning and 70.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.71 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 67.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1090.16 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 68.3 MB in the end (delta: -488.7 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 719070.12 ms. Allocated memory was 92.3 MB in the beginning and 547.4 MB in the end (delta: 455.1 MB). Free memory was 67.9 MB in the beginning and 398.0 MB in the end (delta: -330.2 MB). Peak memory consumption was 360.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.80 ms. Allocated memory is still 547.4 MB. Free memory is still 398.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L822] struct ldv_hid_device *hdev = (struct ldv_hid_device *)ldv_malloc(sizeof(struct ldv_hid_device)); [L823] COND FALSE !(!hdev) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L824] struct ldv_usb_interface *intf = (struct ldv_usb_interface*)ldv_malloc(sizeof(struct ldv_usb_interface)); [L825] COND FALSE !(!intf) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L826] intf->cur_altsetting = (struct ldv_usb_host_interface *)ldv_malloc(sizeof(struct ldv_usb_host_interface)) [L827] EXPR intf->cur_altsetting [L827] COND FALSE !(!intf->cur_altsetting) [L828] EXPR intf->cur_altsetting [L828] intf->cur_altsetting->desc.bInterfaceProtocol = (char)__VERIFIER_nondet_int() [L829] hdev->dev.parent = &intf->dev [L809] int retval; [L778] struct ldv_arvo_device *arvo; [L779] int retval; [L780] EXPR hdev->dev.parent [L780] const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); [L780] struct ldv_usb_interface *intf = ({ const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); (struct ldv_usb_interface *)( (char *)__mptr - ((size_t) &((struct ldv_usb_interface *)0)->dev) );}); [L781] EXPR intf->cur_altsetting [L781] EXPR intf->cur_altsetting->desc.bInterfaceProtocol [L781] COND TRUE intf->cur_altsetting->desc.bInterfaceProtocol == 7 [L623] dev->driver_data = data [L783] return 0; [L810] retval = ldv_arvo_init_specials(hdev) [L811] COND FALSE !(\read(retval)) [L814] return 0; [L830] COND TRUE ldv_arvo_probe(hdev)==0 [L800] EXPR hdev->dev.parent [L800] const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); [L800] struct ldv_usb_interface *intf = ({ const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); (struct ldv_usb_interface *)( (char *)__mptr - ((size_t) &((struct ldv_usb_interface *)0)->dev) );}); [L801] struct ldv_arvo_device *arvo; [L802] EXPR intf->cur_altsetting [L802] intf->cur_altsetting->desc.bInterfaceProtocol - UnprovableResult [Line: 826]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 842]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 52 error locations. Started 1 CEGAR loops. OverallTime: 718.9s, OverallIterations: 37, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 179.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3718 SDtfs, 15987 SDslu, 10793 SDs, 0 SdLazy, 9367 SolverSat, 728 SolverUnsat, 32 SolverUnknown, 0 SolverNotchecked, 124.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1519 GetRequests, 1034 SyntacticMatches, 23 SemanticMatches, 462 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 205.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=8, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 36 MinimizatonAttempts, 3572 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 326.2s InterpolantComputationTime, 743 NumberOfCodeBlocks, 743 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1379 ConstructedInterpolants, 141 QuantifiedInterpolants, 21118 SizeOfPredicates, 432 NumberOfNonLiveVariables, 3523 ConjunctsInSsa, 522 ConjunctsInUnsatCore, 73 InterpolantComputations, 73 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:37:21,105 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-29 05:37:21,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc748ae-0bda-4735-8f6a-4f1dce301059/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...