./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8 --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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:02:20,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:02:20,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:02:20,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:02:20,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:02:20,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:02:20,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:02:20,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:02:20,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:02:20,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:02:20,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:02:20,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:02:20,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:02:20,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:02:20,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:02:20,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:02:20,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:02:20,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:02:20,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:02:20,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:02:20,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:02:20,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:02:20,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:02:20,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:02:20,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:02:20,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:02:20,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:02:20,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:02:20,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:02:20,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:02:20,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:02:20,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:02:20,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:02:20,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:02:20,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:02:20,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:02:20,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:02:20,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:02:20,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:02:20,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:02:20,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:02:20,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-07 02:02:20,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:02:20,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:02:20,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:02:20,754 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:02:20,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:02:20,754 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:02:20,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:02:20,755 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:02:20,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:02:20,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:02:20,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:02:20,755 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:02:20,756 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:02:20,756 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:02:20,756 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:02:20,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:02:20,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:02:20,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:02:20,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:02:20,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:02:20,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:02:20,758 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:02:20,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:02:20,758 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:02:20,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:02:20,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:02:20,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:02:20,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:02:20,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:02:20,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:20,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:02:20,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:02:20,760 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:02:20,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:02:20,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:02:20,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:02:20,761 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_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2021-11-07 02:02:21,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:02:21,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:02:21,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:02:21,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:02:21,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:02:21,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-11-07 02:02:21,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/d784ef02d/50816a0a0d3f47d293d8016f862ba6f9/FLAGae19af7ab [2021-11-07 02:02:21,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:02:21,874 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-11-07 02:02:21,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/d784ef02d/50816a0a0d3f47d293d8016f862ba6f9/FLAGae19af7ab [2021-11-07 02:02:22,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/d784ef02d/50816a0a0d3f47d293d8016f862ba6f9 [2021-11-07 02:02:22,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:02:22,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:02:22,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:22,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:02:22,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:02:22,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:22" (1/1) ... [2021-11-07 02:02:22,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9b81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:22, skipping insertion in model container [2021-11-07 02:02:22,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:22" (1/1) ... [2021-11-07 02:02:22,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:02:22,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:22,721 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-11-07 02:02:22,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:22,784 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:02:22,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a31e408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:22, skipping insertion in model container [2021-11-07 02:02:22,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:22,786 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:02:22,788 INFO L168 Benchmark]: Toolchain (without parser) took 744.35 ms. Allocated memory is still 125.8 MB. Free memory was 87.6 MB in the beginning and 90.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:02:22,789 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:02:22,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.66 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 90.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:02:22,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 36.4 MB in the beginning and 36.3 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.66 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 90.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8 --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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:02:24,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:02:24,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:02:24,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:02:24,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:02:24,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:02:24,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:02:24,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:02:24,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:02:25,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:02:25,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:02:25,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:02:25,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:02:25,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:02:25,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:02:25,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:02:25,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:02:25,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:02:25,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:02:25,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:02:25,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:02:25,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:02:25,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:02:25,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:02:25,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:02:25,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:02:25,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:02:25,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:02:25,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:02:25,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:02:25,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:02:25,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:02:25,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:02:25,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:02:25,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:02:25,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:02:25,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:02:25,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:02:25,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:02:25,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:02:25,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:02:25,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-07 02:02:25,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:02:25,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:02:25,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:02:25,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:02:25,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:02:25,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:02:25,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:02:25,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:02:25,105 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:02:25,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:02:25,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:02:25,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:02:25,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:02:25,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:02:25,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:02:25,109 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:02:25,109 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:02:25,109 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:02:25,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:02:25,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:02:25,110 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:02:25,110 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:02:25,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:02:25,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:02:25,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:02:25,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:02:25,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:25,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:02:25,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:02:25,112 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:02:25,112 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:25,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:02:25,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:02:25,113 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_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2021-11-07 02:02:25,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:02:25,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:02:25,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:02:25,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:02:25,542 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:02:25,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-11-07 02:02:25,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/aba9878ec/9ceb69c7ef8f48c4b325cd5bc35dbeb9/FLAG14603bf27 [2021-11-07 02:02:26,207 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:02:26,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-11-07 02:02:26,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/aba9878ec/9ceb69c7ef8f48c4b325cd5bc35dbeb9/FLAG14603bf27 [2021-11-07 02:02:26,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/data/aba9878ec/9ceb69c7ef8f48c4b325cd5bc35dbeb9 [2021-11-07 02:02:26,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:02:26,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:02:26,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:26,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:02:26,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:02:26,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:26" (1/1) ... [2021-11-07 02:02:26,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aed54d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:26, skipping insertion in model container [2021-11-07 02:02:26,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:26" (1/1) ... [2021-11-07 02:02:26,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:02:26,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:27,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-11-07 02:02:27,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:27,375 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:02:27,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:27,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-11-07 02:02:27,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:27,525 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:02:27,570 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-11-07 02:02:27,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:27,716 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:02:27,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27 WrapperNode [2021-11-07 02:02:27,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:27,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:02:27,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:02:27,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:02:27,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:02:27,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:02:27,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:02:27,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:02:27,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:02:27,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:02:27,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:02:27,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:02:27,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (1/1) ... [2021-11-07 02:02:27,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:27,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:02:27,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:02:27,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:02:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:02:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:02:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:02:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:02:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:02:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:02:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:02:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:02:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 02:02:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:02:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:02:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:02:29,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:02:29,902 INFO L299 CfgBuilder]: Removed 32 assume(true) statements. [2021-11-07 02:02:29,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:02:29 BoogieIcfgContainer [2021-11-07 02:02:29,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:02:29,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:02:29,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:02:29,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:02:29,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:02:26" (1/3) ... [2021-11-07 02:02:29,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218b7a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:02:29, skipping insertion in model container [2021-11-07 02:02:29,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:27" (2/3) ... [2021-11-07 02:02:29,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218b7a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:02:29, skipping insertion in model container [2021-11-07 02:02:29,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:02:29" (3/3) ... [2021-11-07 02:02:29,912 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-1.i [2021-11-07 02:02:29,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:02:29,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-11-07 02:02:29,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:02:29,965 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 [2021-11-07 02:02:29,966 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-11-07 02:02:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 145 states have (on average 1.9517241379310344) internal successors, (283), 237 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:02:29,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:29,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:02:29,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 02:02:30,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:30,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611846812] [2021-11-07 02:02:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:30,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:30,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:30,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:30,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:02:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:30,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:30,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:30,306 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 [2021-11-07 02:02:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:30,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:30,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:30,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611846812] [2021-11-07 02:02:30,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611846812] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:30,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:30,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:02:30,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529909194] [2021-11-07 02:02:30,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:02:30,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:02:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:02:30,377 INFO L87 Difference]: Start difference. First operand has 238 states, 145 states have (on average 1.9517241379310344) internal successors, (283), 237 states have internal predecessors, (283), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:31,109 INFO L93 Difference]: Finished difference Result 252 states and 287 transitions. [2021-11-07 02:02:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:02:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-07 02:02:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:31,129 INFO L225 Difference]: With dead ends: 252 [2021-11-07 02:02:31,130 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 02:02:31,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:02:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 02:02:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 234. [2021-11-07 02:02:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 144 states have (on average 1.8611111111111112) internal successors, (268), 233 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 268 transitions. [2021-11-07 02:02:31,182 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 268 transitions. Word has length 3 [2021-11-07 02:02:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:31,183 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 268 transitions. [2021-11-07 02:02:31,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 268 transitions. [2021-11-07 02:02:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:02:31,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:31,184 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:02:31,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:02:31,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:31,385 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 02:02:31,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:31,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063752585] [2021-11-07 02:02:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:31,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:31,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:31,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:31,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:02:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:31,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:02:31,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:31,600 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 [2021-11-07 02:02:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:31,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:31,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:31,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063752585] [2021-11-07 02:02:31,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063752585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:31,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:31,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:02:31,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537914835] [2021-11-07 02:02:31,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:02:31,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:02:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:31,751 INFO L87 Difference]: Start difference. First operand 234 states and 268 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:33,472 INFO L93 Difference]: Finished difference Result 233 states and 267 transitions. [2021-11-07 02:02:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:02:33,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 3 [2021-11-07 02:02:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:33,497 INFO L225 Difference]: With dead ends: 233 [2021-11-07 02:02:33,498 INFO L226 Difference]: Without dead ends: 233 [2021-11-07 02:02:33,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-07 02:02:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-07 02:02:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 144 states have (on average 1.8541666666666667) internal successors, (267), 232 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 267 transitions. [2021-11-07 02:02:33,515 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 267 transitions. Word has length 3 [2021-11-07 02:02:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:33,515 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 267 transitions. [2021-11-07 02:02:33,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 267 transitions. [2021-11-07 02:02:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:02:33,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:33,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:02:33,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:33,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:33,730 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-11-07 02:02:33,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:33,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733892837] [2021-11-07 02:02:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:33,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:33,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:33,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:02:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:33,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:02:33,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:33,979 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 [2021-11-07 02:02:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:34,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:34,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:34,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733892837] [2021-11-07 02:02:34,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733892837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:34,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:34,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:02:34,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213772398] [2021-11-07 02:02:34,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:02:34,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:02:34,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:02:34,545 INFO L87 Difference]: Start difference. First operand 233 states and 267 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-11-07 02:02:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:37,172 INFO L93 Difference]: Finished difference Result 242 states and 277 transitions. [2021-11-07 02:02:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:02:37,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 6 [2021-11-07 02:02:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:37,176 INFO L225 Difference]: With dead ends: 242 [2021-11-07 02:02:37,176 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 02:02:37,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:02:37,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 02:02:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 239. [2021-11-07 02:02:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 150 states have (on average 1.8266666666666667) internal successors, (274), 238 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2021-11-07 02:02:37,191 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 6 [2021-11-07 02:02:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:37,192 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2021-11-07 02:02:37,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-11-07 02:02:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2021-11-07 02:02:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:02:37,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:37,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:37,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:37,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:37,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:37,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1990005034, now seen corresponding path program 1 times [2021-11-07 02:02:37,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:37,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451471322] [2021-11-07 02:02:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:37,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:37,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:37,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:37,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:02:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:37,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:02:37,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:37,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:37,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:37,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451471322] [2021-11-07 02:02:37,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451471322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:37,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1858641914] [2021-11-07 02:02:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:37,770 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:37,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:37,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:37,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 02:02:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:38,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:02:38,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:38,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:38,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1858641914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:38,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108812929] [2021-11-07 02:02:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:38,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:02:38,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:02:38,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:02:38,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 02:02:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:38,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:02:38,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:38,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:38,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108812929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:38,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:02:38,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-07 02:02:38,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744534294] [2021-11-07 02:02:38,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:02:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:02:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:02:38,549 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:38,680 INFO L93 Difference]: Finished difference Result 247 states and 281 transitions. [2021-11-07 02:02:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:02:38,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 02:02:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:38,689 INFO L225 Difference]: With dead ends: 247 [2021-11-07 02:02:38,690 INFO L226 Difference]: Without dead ends: 247 [2021-11-07 02:02:38,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:02:38,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-07 02:02:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-11-07 02:02:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 157 states have (on average 1.7898089171974523) internal successors, (281), 245 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) [2021-11-07 02:02:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 281 transitions. [2021-11-07 02:02:38,719 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 281 transitions. Word has length 13 [2021-11-07 02:02:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:38,720 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 281 transitions. [2021-11-07 02:02:38,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 281 transitions. [2021-11-07 02:02:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:02:38,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:38,721 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-07 02:02:38,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:38,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:39,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:39,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:39,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-11-07 02:02:39,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:39,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326978039] [2021-11-07 02:02:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:39,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:39,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:39,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:39,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:02:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:39,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:02:39,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:39,583 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 [2021-11-07 02:02:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:39,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:42,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:42,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326978039] [2021-11-07 02:02:42,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326978039] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:42,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1955995461] [2021-11-07 02:02:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:42,747 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:42,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:42,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:02:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:43,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:02:43,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:43,222 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 [2021-11-07 02:02:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:43,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:44,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1955995461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:44,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885335760] [2021-11-07 02:02:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:44,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:02:44,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:02:44,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:02:44,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 02:02:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:44,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:02:44,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:44,434 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 [2021-11-07 02:02:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:44,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:45,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885335760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:45,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:02:45,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-07 02:02:45,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004584200] [2021-11-07 02:02:45,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:02:45,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:02:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:02:45,420 INFO L87 Difference]: Start difference. First operand 246 states and 281 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:52,490 INFO L93 Difference]: Finished difference Result 249 states and 283 transitions. [2021-11-07 02:02:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:02:52,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 02:02:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:52,493 INFO L225 Difference]: With dead ends: 249 [2021-11-07 02:02:52,493 INFO L226 Difference]: Without dead ends: 249 [2021-11-07 02:02:52,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:02:52,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-07 02:02:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-07 02:02:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 161 states have (on average 1.7577639751552796) internal successors, (283), 248 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 283 transitions. [2021-11-07 02:02:52,501 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 283 transitions. Word has length 14 [2021-11-07 02:02:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:52,502 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 283 transitions. [2021-11-07 02:02:52,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 283 transitions. [2021-11-07 02:02:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 02:02:52,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:52,503 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:52,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:52,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:52,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:53,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:53,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash 388981918, now seen corresponding path program 2 times [2021-11-07 02:02:53,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:53,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39992364] [2021-11-07 02:02:53,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:02:53,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:53,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:53,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:53,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:02:53,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:02:53,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:02:53,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:53,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:53,562 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:02:53,562 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-07 02:02:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:02:53,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:02:53,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:53,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39992364] [2021-11-07 02:02:53,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39992364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:53,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:53,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:02:53,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101651026] [2021-11-07 02:02:53,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:02:53,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:53,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:02:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:02:53,670 INFO L87 Difference]: Start difference. First operand 249 states and 283 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:54,255 INFO L93 Difference]: Finished difference Result 260 states and 295 transitions. [2021-11-07 02:02:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:02:54,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 29 [2021-11-07 02:02:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:54,257 INFO L225 Difference]: With dead ends: 260 [2021-11-07 02:02:54,257 INFO L226 Difference]: Without dead ends: 260 [2021-11-07 02:02:54,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:02:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-07 02:02:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 244. [2021-11-07 02:02:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 161 states have (on average 1.7267080745341614) internal successors, (278), 243 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 278 transitions. [2021-11-07 02:02:54,265 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 278 transitions. Word has length 29 [2021-11-07 02:02:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:54,265 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 278 transitions. [2021-11-07 02:02:54,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 278 transitions. [2021-11-07 02:02:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 02:02:54,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:54,266 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:54,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:54,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:54,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash 388981919, now seen corresponding path program 1 times [2021-11-07 02:02:54,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:54,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757573292] [2021-11-07 02:02:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:54,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:54,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:54,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:02:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:54,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:54,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:54,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:55,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:55,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757573292] [2021-11-07 02:02:55,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757573292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:55,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610737866] [2021-11-07 02:02:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:55,151 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:55,152 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:55,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:02:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:55,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:55,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:55,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:56,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610737866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:56,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252782433] [2021-11-07 02:02:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:56,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:02:56,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:02:56,066 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:02:56,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 02:02:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:56,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:02:56,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:56,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:56,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252782433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:56,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:02:56,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-07 02:02:56,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298733299] [2021-11-07 02:02:56,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 02:02:56,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 02:02:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-07 02:02:56,963 INFO L87 Difference]: Start difference. First operand 244 states and 278 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:57,676 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2021-11-07 02:02:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 02:02:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 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 29 [2021-11-07 02:02:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:57,680 INFO L225 Difference]: With dead ends: 272 [2021-11-07 02:02:57,680 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 02:02:57,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-07 02:02:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 02:02:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-07 02:02:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 189 states have (on average 1.6243386243386244) internal successors, (307), 271 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 307 transitions. [2021-11-07 02:02:57,688 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 307 transitions. Word has length 29 [2021-11-07 02:02:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:57,689 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 307 transitions. [2021-11-07 02:02:57,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 307 transitions. [2021-11-07 02:02:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:02:57,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:57,691 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:57,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 02:02:57,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:58,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:58,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:58,296 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:02:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1981689168, now seen corresponding path program 2 times [2021-11-07 02:02:58,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:58,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489831656] [2021-11-07 02:02:58,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:02:58,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:58,298 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:58,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:02:58,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:02:58,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:02:58,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:58,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:58,928 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-07 02:02:58,928 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 1 case distinctions, treesize of input 30 treesize of output 31 [2021-11-07 02:02:58,938 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 32 treesize of output 30 [2021-11-07 02:02:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:02:59,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:02:59,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:59,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489831656] [2021-11-07 02:02:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489831656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:59,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:02:59,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374040914] [2021-11-07 02:02:59,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:02:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:02:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:02:59,752 INFO L87 Difference]: Start difference. First operand 272 states and 307 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:03,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:03,224 INFO L93 Difference]: Finished difference Result 530 states and 599 transitions. [2021-11-07 02:03:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:03:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 49 [2021-11-07 02:03:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:03,228 INFO L225 Difference]: With dead ends: 530 [2021-11-07 02:03:03,228 INFO L226 Difference]: Without dead ends: 530 [2021-11-07 02:03:03,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:03:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-07 02:03:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 381. [2021-11-07 02:03:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 299 states have (on average 1.7190635451505016) internal successors, (514), 380 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 514 transitions. [2021-11-07 02:03:03,242 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 514 transitions. Word has length 49 [2021-11-07 02:03:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:03,242 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 514 transitions. [2021-11-07 02:03:03,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 514 transitions. [2021-11-07 02:03:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 02:03:03,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:03,244 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:03:03,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:03,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:03,461 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:03:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2118422360, now seen corresponding path program 1 times [2021-11-07 02:03:03,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:03,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368597846] [2021-11-07 02:03:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:03,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:03,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:03,464 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:03,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:03:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:04,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:03:04,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:04,365 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-07 02:03:04,366 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 1 case distinctions, treesize of input 36 treesize of output 37 [2021-11-07 02:03:04,371 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 38 treesize of output 36 [2021-11-07 02:03:05,005 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-07 02:03:05,005 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 3 case distinctions, treesize of input 53 treesize of output 62 [2021-11-07 02:03:05,016 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 02:03:05,016 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 56 treesize of output 52 [2021-11-07 02:03:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:03:05,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:06,895 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 02:03:06,895 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 45 treesize of output 44 [2021-11-07 02:03:10,140 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 60 treesize of output 58 [2021-11-07 02:03:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:03:10,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:10,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368597846] [2021-11-07 02:03:10,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368597846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:10,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:03:10,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-07 02:03:10,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653717614] [2021-11-07 02:03:10,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:03:10,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:03:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2021-11-07 02:03:10,610 INFO L87 Difference]: Start difference. First operand 381 states and 514 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:36,578 WARN L207 SmtUtils]: Spent 13.02 s on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-11-07 02:04:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:06,513 INFO L93 Difference]: Finished difference Result 614 states and 688 transitions. [2021-11-07 02:04:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 02:04:06,513 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 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 52 [2021-11-07 02:04:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:06,516 INFO L225 Difference]: With dead ends: 614 [2021-11-07 02:04:06,517 INFO L226 Difference]: Without dead ends: 614 [2021-11-07 02:04:06,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=212, Invalid=489, Unknown=1, NotChecked=0, Total=702 [2021-11-07 02:04:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-07 02:04:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 270. [2021-11-07 02:04:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 191 states have (on average 1.5968586387434556) internal successors, (305), 269 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 305 transitions. [2021-11-07 02:04:06,527 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 305 transitions. Word has length 52 [2021-11-07 02:04:06,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:06,528 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 305 transitions. [2021-11-07 02:04:06,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 305 transitions. [2021-11-07 02:04:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:04:06,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:06,529 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:06,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:06,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:06,750 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:04:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash -328933539, now seen corresponding path program 1 times [2021-11-07 02:04:06,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:06,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15965476] [2021-11-07 02:04:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:06,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:06,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:06,752 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:06,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:04:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:07,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:04:07,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:07,574 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:04:07,575 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-07 02:04:07,674 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:04:07,675 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 18 treesize of output 23 [2021-11-07 02:04:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:04:07,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:04:07,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:07,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15965476] [2021-11-07 02:04:07,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15965476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:07,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:07,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:04:07,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978196957] [2021-11-07 02:04:07,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:07,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:04:07,885 INFO L87 Difference]: Start difference. First operand 270 states and 305 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:08,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:08,492 INFO L93 Difference]: Finished difference Result 277 states and 313 transitions. [2021-11-07 02:04:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:08,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 02:04:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:08,495 INFO L225 Difference]: With dead ends: 277 [2021-11-07 02:04:08,495 INFO L226 Difference]: Without dead ends: 277 [2021-11-07 02:04:08,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:04:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-07 02:04:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2021-11-07 02:04:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 196 states have (on average 1.596938775510204) internal successors, (313), 273 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 313 transitions. [2021-11-07 02:04:08,502 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 313 transitions. Word has length 55 [2021-11-07 02:04:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:08,502 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 313 transitions. [2021-11-07 02:04:08,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 313 transitions. [2021-11-07 02:04:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:04:08,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:08,504 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:08,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:08,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:08,723 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:04:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash -328933538, now seen corresponding path program 1 times [2021-11-07 02:04:08,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:08,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342961882] [2021-11-07 02:04:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:08,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:08,730 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:08,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:04:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:09,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:04:09,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:09,798 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-07 02:04:09,798 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-07 02:04:09,832 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:04:09,832 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 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-07 02:04:10,457 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-07 02:04:10,457 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 3 case distinctions, treesize of input 58 treesize of output 63 [2021-11-07 02:04:10,467 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 02:04:10,468 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 57 treesize of output 51 [2021-11-07 02:04:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:04:10,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:13,595 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 59 treesize of output 57 [2021-11-07 02:04:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:04:13,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:13,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342961882] [2021-11-07 02:04:13,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342961882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:13,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:13,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 02:04:13,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561295090] [2021-11-07 02:04:13,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:04:13,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:04:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:04:13,926 INFO L87 Difference]: Start difference. First operand 274 states and 313 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:40,573 WARN L207 SmtUtils]: Spent 9.01 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-11-07 02:04:57,667 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification that was a NOOP. DAG size: 43 [2021-11-07 02:05:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:01,666 INFO L93 Difference]: Finished difference Result 688 states and 766 transitions. [2021-11-07 02:05:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 02:05:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 02:05:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:01,671 INFO L225 Difference]: With dead ends: 688 [2021-11-07 02:05:01,671 INFO L226 Difference]: Without dead ends: 688 [2021-11-07 02:05:01,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2021-11-07 02:05:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-07 02:05:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 292. [2021-11-07 02:05:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 214 states have (on average 1.574766355140187) internal successors, (337), 291 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 337 transitions. [2021-11-07 02:05:01,682 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 337 transitions. Word has length 55 [2021-11-07 02:05:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:01,682 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 337 transitions. [2021-11-07 02:05:01,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 337 transitions. [2021-11-07 02:05:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 02:05:01,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:01,684 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:01,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:01,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:01,898 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:05:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1856332990, now seen corresponding path program 1 times [2021-11-07 02:05:01,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:01,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925896232] [2021-11-07 02:05:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:01,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:01,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:01,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:01,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:05:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:05:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:02,873 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 [2021-11-07 02:05:02,943 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 24 treesize of output 20 [2021-11-07 02:05:03,206 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-07 02:05:03,206 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-11-07 02:05:03,337 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 28 treesize of output 14 [2021-11-07 02:05:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:05:03,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:05,475 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) |c_ULTIMATE.start_main_#t~mem134.base|)) c_ULTIMATE.start_main_~argv~0.base) (bvadd .cse0 c_ULTIMATE.start_main_~argv~0.offset)))))))) (_ bv1 1)))) is different from false [2021-11-07 02:05:07,502 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))))))))) is different from false [2021-11-07 02:05:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:05:07,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:07,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925896232] [2021-11-07 02:05:07,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925896232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:07,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:07,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-07 02:05:07,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740979773] [2021-11-07 02:05:07,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:05:07,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:05:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-07 02:05:07,674 INFO L87 Difference]: Start difference. First operand 292 states and 337 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:44,858 WARN L207 SmtUtils]: Spent 14.21 s on a formula simplification that was a NOOP. DAG size: 41 [2021-11-07 02:05:53,186 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_#t~malloc133.base|))))))) (_ bv1 1))) (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))))))) (_ bv1 1)))) is different from false [2021-11-07 02:05:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:58,979 INFO L93 Difference]: Finished difference Result 292 states and 335 transitions. [2021-11-07 02:05:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 02:05:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 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 58 [2021-11-07 02:05:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:58,982 INFO L225 Difference]: With dead ends: 292 [2021-11-07 02:05:58,982 INFO L226 Difference]: Without dead ends: 292 [2021-11-07 02:05:58,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=58, Invalid=123, Unknown=13, NotChecked=78, Total=272 [2021-11-07 02:05:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-07 02:05:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2021-11-07 02:05:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 214 states have (on average 1.5654205607476634) internal successors, (335), 290 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 335 transitions. [2021-11-07 02:05:58,992 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 335 transitions. Word has length 58 [2021-11-07 02:05:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:58,993 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 335 transitions. [2021-11-07 02:05:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 335 transitions. [2021-11-07 02:05:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 02:05:58,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:58,994 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:59,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:59,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:59,210 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:05:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1856332991, now seen corresponding path program 1 times [2021-11-07 02:05:59,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:59,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267781656] [2021-11-07 02:05:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:59,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:59,212 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:59,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:06:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:00,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:06:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:00,139 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 13 treesize of output 11 [2021-11-07 02:06:00,194 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 [2021-11-07 02:06:00,265 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 22 treesize of output 18 [2021-11-07 02:06:00,303 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 16 treesize of output 12 [2021-11-07 02:06:00,540 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:00,540 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-07 02:06:00,597 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:00,597 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-07 02:06:00,702 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 51 treesize of output 33 [2021-11-07 02:06:00,707 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 30 treesize of output 12 [2021-11-07 02:06:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:06:00,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:06:14,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:14,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267781656] [2021-11-07 02:06:14,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267781656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:14,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:14,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 02:06:14,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259821180] [2021-11-07 02:06:14,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 02:06:14,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 02:06:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=77, Unknown=4, NotChecked=0, Total=110 [2021-11-07 02:06:14,276 INFO L87 Difference]: Start difference. First operand 291 states and 335 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:23,032 INFO L93 Difference]: Finished difference Result 290 states and 333 transitions. [2021-11-07 02:06:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:06:23,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 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 58 [2021-11-07 02:06:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:23,036 INFO L225 Difference]: With dead ends: 290 [2021-11-07 02:06:23,036 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 02:06:23,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=53, Invalid=125, Unknown=4, NotChecked=0, Total=182 [2021-11-07 02:06:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 02:06:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-07 02:06:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 214 states have (on average 1.5560747663551402) internal successors, (333), 289 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 333 transitions. [2021-11-07 02:06:23,042 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 333 transitions. Word has length 58 [2021-11-07 02:06:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:23,042 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 333 transitions. [2021-11-07 02:06:23,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 333 transitions. [2021-11-07 02:06:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 02:06:23,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:23,044 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:23,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:23,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:23,244 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:06:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash 534217897, now seen corresponding path program 1 times [2021-11-07 02:06:23,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:23,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810979614] [2021-11-07 02:06:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:23,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:23,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:23,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:23,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 02:06:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:24,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:06:24,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:24,435 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 15 treesize of output 13 [2021-11-07 02:06:24,556 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 02:06:24,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 30 [2021-11-07 02:06:24,690 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 28 treesize of output 24 [2021-11-07 02:06:24,972 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:24,972 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2021-11-07 02:06:25,411 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:25,411 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 45 [2021-11-07 02:06:25,538 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 59 treesize of output 32 [2021-11-07 02:06:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:06:25,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:25,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:06:25,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 02:06:34,147 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_1))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:06:36,212 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse3) |ULTIMATE.start_main_#t~mem134.base|)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_1)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:06:39,638 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-07 02:06:39,639 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 55 treesize of output 55 [2021-11-07 02:06:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:06:39,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:39,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810979614] [2021-11-07 02:06:39,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810979614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:39,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:39,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-07 02:06:39,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104737917] [2021-11-07 02:06:39,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 02:06:39,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 02:06:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=140, Unknown=4, NotChecked=50, Total=240 [2021-11-07 02:06:39,720 INFO L87 Difference]: Start difference. First operand 290 states and 333 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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) [2021-11-07 02:06:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:49,416 INFO L93 Difference]: Finished difference Result 314 states and 358 transitions. [2021-11-07 02:06:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:06:49,416 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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 62 [2021-11-07 02:06:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:49,418 INFO L225 Difference]: With dead ends: 314 [2021-11-07 02:06:49,418 INFO L226 Difference]: Without dead ends: 314 [2021-11-07 02:06:49,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=104, Invalid=280, Unknown=4, NotChecked=74, Total=462 [2021-11-07 02:06:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-07 02:06:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 299. [2021-11-07 02:06:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 223 states have (on average 1.5605381165919283) internal successors, (348), 298 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2021-11-07 02:06:49,425 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 62 [2021-11-07 02:06:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2021-11-07 02:06:49,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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) [2021-11-07 02:06:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2021-11-07 02:06:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 02:06:49,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:49,427 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:49,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-07 02:06:49,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:49,657 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:06:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash 534217898, now seen corresponding path program 1 times [2021-11-07 02:06:49,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:49,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616237320] [2021-11-07 02:06:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:49,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:49,660 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:49,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:06:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:06:50,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:50,749 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 15 treesize of output 13 [2021-11-07 02:06:50,855 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 [2021-11-07 02:06:50,908 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:06:50,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-07 02:06:50,995 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 16 treesize of output 12 [2021-11-07 02:06:51,032 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 26 treesize of output 22 [2021-11-07 02:06:51,343 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:51,343 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-07 02:06:51,396 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:51,396 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-07 02:06:51,675 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:06:51,676 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-07 02:06:51,717 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-07 02:06:51,718 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-07 02:06:51,911 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 64 treesize of output 46 [2021-11-07 02:06:51,918 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 43 treesize of output 16 [2021-11-07 02:06:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:06:52,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:53,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:06:53,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-07 02:06:53,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:06:53,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-07 02:06:55,275 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse2 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|)) (.cse3 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base|) .cse2 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) .cse3) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base|) .cse2 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse3)))))) is different from false [2021-11-07 02:06:57,378 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_3))) c_ULTIMATE.start_main_~argv~0.base) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) .cse6) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse6))))))) is different from false [2021-11-07 02:06:59,592 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse6 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse5 (bvadd .cse6 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse4 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse6))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse4 |ULTIMATE.start_main_#t~mem134.offset|))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse4 |ULTIMATE.start_main_#t~mem134.base|)) c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_3)))) c_ULTIMATE.start_main_~argv~0.base) .cse5))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (let ((.cse13 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse10 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse13))) (let ((.cse12 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |ULTIMATE.start_main_#t~mem134.base|))) (.cse11 (bvadd .cse13 c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse8 (select (select .cse12 c_ULTIMATE.start_main_~argv~0.base) .cse11)) (.cse9 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |ULTIMATE.start_main_#t~mem134.offset|)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_DerPreprocessor_3))) c_ULTIMATE.start_main_~argv~0.base) .cse11)) (select |c_#length| (select (select (store .cse12 .cse8 (store (select .cse12 .cse8) .cse9 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse11))))))))) is different from false [2021-11-07 02:07:00,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:07:00,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:07:00,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:07:01,182 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 02:07:01,182 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 26 treesize of output 25 [2021-11-07 02:07:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:07:01,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:01,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616237320] [2021-11-07 02:07:01,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616237320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:01,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:01,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-07 02:07:01,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780941333] [2021-11-07 02:07:01,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 02:07:01,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 02:07:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=171, Unknown=3, NotChecked=84, Total=306 [2021-11-07 02:07:01,263 INFO L87 Difference]: Start difference. First operand 299 states and 348 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 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) [2021-11-07 02:07:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:25,409 INFO L93 Difference]: Finished difference Result 311 states and 352 transitions. [2021-11-07 02:07:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:07:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 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 62 [2021-11-07 02:07:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:25,411 INFO L225 Difference]: With dead ends: 311 [2021-11-07 02:07:25,412 INFO L226 Difference]: Without dead ends: 311 [2021-11-07 02:07:25,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=126, Invalid=389, Unknown=3, NotChecked=132, Total=650 [2021-11-07 02:07:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-07 02:07:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 299. [2021-11-07 02:07:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 223 states have (on average 1.5426008968609866) internal successors, (344), 298 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 344 transitions. [2021-11-07 02:07:25,417 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 344 transitions. Word has length 62 [2021-11-07 02:07:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:25,418 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 344 transitions. [2021-11-07 02:07:25,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 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) [2021-11-07 02:07:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 344 transitions. [2021-11-07 02:07:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:07:25,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:25,418 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:07:25,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:25,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:25,619 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:07:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1858298017, now seen corresponding path program 1 times [2021-11-07 02:07:25,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:25,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677299234] [2021-11-07 02:07:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:25,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:25,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:25,621 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:25,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 02:07:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:26,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:07:26,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:26,927 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 13 treesize of output 11 [2021-11-07 02:07:27,039 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 02:07:27,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 30 [2021-11-07 02:07:27,154 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 28 treesize of output 24 [2021-11-07 02:07:27,479 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:07:27,479 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-07 02:07:27,840 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:07:27,842 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 46 [2021-11-07 02:07:28,149 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-07 02:07:28,149 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-07 02:07:28,276 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 62 treesize of output 35 [2021-11-07 02:07:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-07 02:07:28,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:28,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:07:28,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-07 02:07:30,595 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem137.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem137.base|) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-07 02:07:32,623 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_4))) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:32,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:07:32,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 02:07:34,717 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_4)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:36,770 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_4)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:38,853 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |ULTIMATE.start_main_#t~mem134.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_4)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:39,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:39,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677299234] [2021-11-07 02:07:39,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-07 02:07:39,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545356806] [2021-11-07 02:07:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:39,671 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:39,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:07:39,672 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:07:39,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 02:07:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:41,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:07:41,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:42,018 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:07:42,018 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 20 treesize of output 20 [2021-11-07 02:07:42,130 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 02:07:42,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 28 [2021-11-07 02:07:42,207 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 28 treesize of output 24 [2021-11-07 02:07:42,560 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:07:42,561 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 43 [2021-11-07 02:07:43,457 INFO L354 Elim1Store]: treesize reduction 105, result has 27.6 percent of original size [2021-11-07 02:07:43,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 82 [2021-11-07 02:07:43,792 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-07 02:07:43,792 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-07 02:07:43,946 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 62 treesize of output 35 [2021-11-07 02:07:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-07 02:07:44,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:44,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:07:44,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:07:52,413 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_6))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:52,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:07:52,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 02:07:54,491 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_7)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:56,537 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_7))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:07:58,622 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |c_ULTIMATE.start_main_#t~mem134.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:08:17,118 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 02:08:17,118 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 41 treesize of output 1 [2021-11-07 02:08:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-11-07 02:08:17,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [545356806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:17,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150372498] [2021-11-07 02:08:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:17,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:17,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:17,207 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:17,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 02:08:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:18,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:18,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:18,231 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 15 treesize of output 13 [2021-11-07 02:08:18,295 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:08:18,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-07 02:08:18,412 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 21 treesize of output 17 [2021-11-07 02:08:18,622 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:08:18,622 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2021-11-07 02:08:18,926 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:08:18,926 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 35 [2021-11-07 02:08:19,197 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-07 02:08:19,198 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 45 [2021-11-07 02:08:21,491 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 45 treesize of output 18 [2021-11-07 02:08:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-07 02:08:21,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:21,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:21,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 02:08:21,670 INFO L354 Elim1Store]: treesize reduction 5, result has 82.1 percent of original size [2021-11-07 02:08:21,671 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 41 treesize of output 40 [2021-11-07 02:08:23,698 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 64))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem137.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem137.base|) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_8)) c_ULTIMATE.start_main_~argv~0.base) (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset)) |c_ULTIMATE.start_main_#t~mem137.base|)) is different from false [2021-11-07 02:08:40,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:40,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 02:08:42,289 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 64))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_9))) (.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= (select (select (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_8)) c_ULTIMATE.start_main_~argv~0.base) .cse2) .cse1)))) is different from false [2021-11-07 02:08:44,334 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 64))) (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse1 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_9))))) (let ((.cse0 (select (select .cse1 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 (store (select .cse1 .cse0) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_8)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) is different from false [2021-11-07 02:08:46,426 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (let ((.cse5 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |ULTIMATE.start_main_#t~mem134.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|) v_DerPreprocessor_9)))))) (let ((.cse0 (select (select .cse1 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 (store (select .cse1 .cse0) (bvadd ((_ sign_extend 32) ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_8)) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))) is different from false [2021-11-07 02:08:50,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-07 02:08:50,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:50,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-11-07 02:08:50,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125419785] [2021-11-07 02:08:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 02:08:50,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 02:08:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=545, Unknown=29, NotChecked=806, Total=1560 [2021-11-07 02:08:50,491 INFO L87 Difference]: Start difference. First operand 299 states and 344 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:07,134 INFO L93 Difference]: Finished difference Result 308 states and 348 transitions. [2021-11-07 02:09:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 02:09:07,135 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 67 [2021-11-07 02:09:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:07,136 INFO L225 Difference]: With dead ends: 308 [2021-11-07 02:09:07,136 INFO L226 Difference]: Without dead ends: 308 [2021-11-07 02:09:07,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 253 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 75.5s TimeCoverageRelationStatistics Valid=280, Invalid=798, Unknown=30, NotChecked=962, Total=2070 [2021-11-07 02:09:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-07 02:09:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2021-11-07 02:09:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 223 states have (on average 1.5336322869955157) internal successors, (342), 297 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 342 transitions. [2021-11-07 02:09:07,142 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 342 transitions. Word has length 67 [2021-11-07 02:09:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 342 transitions. [2021-11-07 02:09:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 342 transitions. [2021-11-07 02:09:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:09:07,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:07,144 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:07,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:07,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-07 02:09:07,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:07,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:07,758 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-07 02:09:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1858298016, now seen corresponding path program 1 times [2021-11-07 02:09:07,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:07,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159809487] [2021-11-07 02:09:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:07,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:07,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:07,760 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:07,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c19ff2-6eae-4832-a719-dde07e73907b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 02:09:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:08,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 02:09:08,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:09,031 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 12 treesize of output 10 [2021-11-07 02:09:09,127 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:09:09,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-07 02:09:09,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-07 02:09:09,208 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 16 treesize of output 12 [2021-11-07 02:09:09,227 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 26 treesize of output 22 [2021-11-07 02:09:09,437 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:09:09,437 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-07 02:09:09,477 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:09:09,477 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-07 02:09:09,732 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-07 02:09:09,733 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-07 02:09:09,777 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-07 02:09:09,777 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-07 02:09:10,126 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-07 02:09:10,126 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 75 [2021-11-07 02:09:10,166 INFO L354 Elim1Store]: treesize reduction 80, result has 13.0 percent of original size [2021-11-07 02:09:10,166 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 43 [2021-11-07 02:09:10,405 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 64 treesize of output 46 [2021-11-07 02:09:10,410 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 43 treesize of output 16 [2021-11-07 02:09:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-07 02:09:10,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:12,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:12,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 02:09:12,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:12,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-07 02:09:34,189 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd ((_ sign_extend 32) c_ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_10))) c_ULTIMATE.start_main_~argv~0.base) .cse3))) (.cse1 ((_ sign_extend 32) (bvadd c_ULTIMATE.start_main_~j~0 (_ bv1 32))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse6)) (.cse5 (bvadd ((_ sign_extend 32) c_ULTIMATE.start_main_~j~0) |ULTIMATE.start_main_#t~mem137.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse6) (_ bv1 64) ((_ sign_extend 32) (bvadd c_ULTIMATE.start_main_~j~0 (_ bv1 32)))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_11)) c_ULTIMATE.start_main_~argv~0.base) .cse6))))))) is different from false [2021-11-07 02:09:36,414 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem137.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse2) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_11)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse3 (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse5 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse6))) (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_10))) c_ULTIMATE.start_main_~argv~0.base) .cse6))) (.cse4 ((_ sign_extend 32) (_ bv1 32)))) (bvule (bvadd .cse3 .cse4) (bvadd .cse3 .cse4 (_ bv1 64)))))) is different from false [2021-11-07 02:09:36,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:36,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-11-07 02:09:36,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:36,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-07 02:09:38,550 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64))) (let ((.cse3 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base|) .cse3 v_DerPreprocessor_12))) (.cse4 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse1 (select (select .cse5 c_ULTIMATE.start_main_~argv~0.base) .cse4)) (.cse2 (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base|) .cse3 v_DerPreprocessor_13)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_prenex_2))) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_11)) c_ULTIMATE.start_main_~argv~0.base) .cse4))))))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse6 (let ((.cse11 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse10 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem135.base|) .cse10 v_DerPreprocessor_13))) (.cse9 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem135.base|) .cse10 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse11))) (store .cse8 .cse9 (store (select .cse8 .cse9) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_10)))) c_ULTIMATE.start_main_~argv~0.base) .cse11))) (.cse7 ((_ sign_extend 32) (_ bv1 32)))) (bvule (bvadd .cse6 .cse7) (bvadd .cse6 .cse7 (_ bv1 64)))))) is different from false [2021-11-07 02:09:40,696 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_13))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse6))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_10)))) c_ULTIMATE.start_main_~argv~0.base) .cse6)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64))) (let ((.cse12 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse12)) (.cse11 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (let ((.cse13 (store |c_#memory_$Pointer$.base| .cse10 (store (select |c_#memory_$Pointer$.base| .cse10) .cse11 v_DerPreprocessor_12)))) (let ((.cse8 (select (select .cse13 c_ULTIMATE.start_main_~argv~0.base) .cse12)) (.cse9 (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 (store (select |c_#memory_$Pointer$.offset| .cse10) .cse11 v_DerPreprocessor_13)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_prenex_2))) c_ULTIMATE.start_main_~argv~0.base) .cse12)) (select |c_#length| (select (select (store .cse13 .cse8 (store (select .cse13 .cse8) .cse9 v_DerPreprocessor_11)) c_ULTIMATE.start_main_~argv~0.base) .cse12))))))))) is different from false [2021-11-07 02:09:43,007 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem137.offset| (_ BitVec 64)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse10 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse7 (bvadd .cse10 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse9 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse10))) (let ((.cse4 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse9 |ULTIMATE.start_main_#t~mem134.base|)))) (let ((.cse5 (select (select .cse4 c_ULTIMATE.start_main_~argv~0.base) .cse7)) (.cse6 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (let ((.cse2 (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse9 |ULTIMATE.start_main_#t~mem134.offset|)))) (store .cse8 .cse5 (store (select .cse8 .cse5) .cse6 v_DerPreprocessor_13)))) (.cse3 (select (select (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse7))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem137.offset|) v_DerPreprocessor_10)))))) c_ULTIMATE.start_main_~argv~0.base) .cse7))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem135.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem134.base| (_ BitVec 64))) (let ((.cse21 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~4) (_ bv8 64)))) (let ((.cse17 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse21))) (let ((.cse20 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse17 |ULTIMATE.start_main_#t~mem134.base|))) (.cse18 (bvadd .cse21 c_ULTIMATE.start_main_~argv~0.offset))) (let ((.cse15 (select (select .cse20 c_ULTIMATE.start_main_~argv~0.base) .cse18)) (.cse16 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem135.offset|))) (let ((.cse19 (store .cse20 .cse15 (store (select .cse20 .cse15) .cse16 v_DerPreprocessor_12)))) (let ((.cse12 (select (select .cse19 c_ULTIMATE.start_main_~argv~0.base) .cse18)) (.cse13 (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1))) (bvule (bvadd (select (select (let ((.cse11 (let ((.cse14 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse17 |ULTIMATE.start_main_#t~mem134.offset|)))) (store .cse14 .cse15 (store (select .cse14 .cse15) .cse16 v_DerPreprocessor_13))))) (store .cse11 .cse12 (store (select .cse11 .cse12) .cse13 v_prenex_2))) c_ULTIMATE.start_main_~argv~0.base) .cse18) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store .cse19 .cse12 (store (select .cse19 .cse12) .cse13 v_DerPreprocessor_11)) c_ULTIMATE.start_main_~argv~0.base) .cse18))))))))))) is different from false