./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:04,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:04,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:04,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:04,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:04,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:04,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:04,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:04,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:04,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:04,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:04,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:04,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:04,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:04,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:04,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:04,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:04,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:04,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:04,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:04,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:04,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:04,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:04,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:04,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:04,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:04,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:04,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:04,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:04,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:04,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:04,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:04,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:04,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:04,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:04,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:04,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:04,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:04,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:04,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:04,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:04,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 15:50:04,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:04,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:04,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:04,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:04,745 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:04,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:04,746 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:04,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:50:04,746 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:04,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:04,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:50:04,748 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:50:04,749 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:04,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:50:04,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:50:04,750 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:50:04,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 15:50:04,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 15:50:04,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:04,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:04,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:50:04,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:50:04,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:04,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:04,753 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 15:50:04,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 15:50:04,755 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 15:50:04,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:04,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:04,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:04,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:04,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:04,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:04,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:04,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:04,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:04,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:50:04,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:50:04,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:04,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:04,759 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_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-19 15:50:05,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:05,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:05,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:05,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:05,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:05,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-19 15:50:05,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/feeb1e1ef/6547070391a047e991092424d11580bc/FLAG5713535ff [2021-11-19 15:50:06,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:06,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-19 15:50:06,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/feeb1e1ef/6547070391a047e991092424d11580bc/FLAG5713535ff [2021-11-19 15:50:06,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/feeb1e1ef/6547070391a047e991092424d11580bc [2021-11-19 15:50:06,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:06,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:06,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:06,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:06,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:06,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:06" (1/1) ... [2021-11-19 15:50:06,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a98a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:06, skipping insertion in model container [2021-11-19 15:50:06,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:06" (1/1) ... [2021-11-19 15:50:06,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:06,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:06,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-19 15:50:07,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-19 15:50:07,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-19 15:50:07,141 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:07,153 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:50:07,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5afd1dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:07, skipping insertion in model container [2021-11-19 15:50:07,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:07,155 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:50:07,157 INFO L158 Benchmark]: Toolchain (without parser) took 970.68ms. Allocated memory is still 123.7MB. Free memory was 88.3MB in the beginning and 88.3MB in the end (delta: 28.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:50:07,158 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:50:07,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 965.28ms. Allocated memory is still 123.7MB. Free memory was 88.1MB in the beginning and 88.3MB in the end (delta: -215.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:50:07,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 965.28ms. Allocated memory is still 123.7MB. Free memory was 88.1MB in the beginning and 88.3MB in the end (delta: -215.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:09,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:09,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:09,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:09,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:09,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:09,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:09,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:09,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:09,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:09,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:09,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:09,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:09,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:09,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:09,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:09,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:09,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:09,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:09,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:09,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:09,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:09,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:09,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:09,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:09,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:09,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:09,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:09,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:09,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:09,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:09,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:09,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:09,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:09,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:09,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:09,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:09,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:09,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:09,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:09,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:09,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 15:50:09,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:09,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:09,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:09,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:09,950 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:09,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:09,950 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:09,950 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:09,951 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:09,951 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:09,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 15:50:09,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 15:50:09,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:09,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:09,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:50:09,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:50:09,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:09,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:09,955 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 15:50:09,955 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 15:50:09,956 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 15:50:09,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:09,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:09,956 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:50:09,957 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:50:09,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:09,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:09,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:09,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:50:09,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:09,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:09,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:09,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:09,959 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:50:09,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:09,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:09,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:09,960 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_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-19 15:50:10,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:10,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:10,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:10,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:10,417 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:10,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-19 15:50:10,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/35c82fa07/bcf28aa62f904cd697db9d7a828187ec/FLAG45b29a1c0 [2021-11-19 15:50:11,280 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:11,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-19 15:50:11,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/35c82fa07/bcf28aa62f904cd697db9d7a828187ec/FLAG45b29a1c0 [2021-11-19 15:50:11,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/data/35c82fa07/bcf28aa62f904cd697db9d7a828187ec [2021-11-19 15:50:11,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:11,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:11,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:11,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:11,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:11,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:11" (1/1) ... [2021-11-19 15:50:11,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876c529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:11, skipping insertion in model container [2021-11-19 15:50:11,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:11" (1/1) ... [2021-11-19 15:50:11,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:11,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:12,071 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-19 15:50:12,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-19 15:50:12,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-19 15:50:12,296 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:12,309 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:50:12,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:12,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-19 15:50:12,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-19 15:50:12,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-19 15:50:12,481 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:12,501 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:50:12,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-19 15:50:12,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-19 15:50:12,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-19 15:50:12,594 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:12,649 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:50:12,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12 WrapperNode [2021-11-19 15:50:12,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:12,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:12,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:50:12,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:50:12,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,810 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-11-19 15:50:12,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:12,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:50:12,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:50:12,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:50:12,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:50:12,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:50:12,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:50:12,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:50:12,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (1/1) ... [2021-11-19 15:50:12,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:12,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:12,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:50:13,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:50:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:50:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:50:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:50:13,038 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:50:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:50:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:50:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:50:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:50:13,253 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:50:13,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:50:13,258 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 15:50:20,324 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:50:20,353 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:50:20,357 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-19 15:50:20,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:20 BoogieIcfgContainer [2021-11-19 15:50:20,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:50:20,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:50:20,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:50:20,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:50:20,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:50:11" (1/3) ... [2021-11-19 15:50:20,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8e3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:20, skipping insertion in model container [2021-11-19 15:50:20,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:12" (2/3) ... [2021-11-19 15:50:20,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8e3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:20, skipping insertion in model container [2021-11-19 15:50:20,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:20" (3/3) ... [2021-11-19 15:50:20,374 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-2.i [2021-11-19 15:50:20,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:50:20,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-11-19 15:50:20,448 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:50:20,457 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 [2021-11-19 15:50:20,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-11-19 15:50:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:50:20,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:20,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:50:20,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 15:50:20,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:20,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037791646] [2021-11-19 15:50:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:20,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:20,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:20,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:20,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:50:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:20,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:20,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:20,953 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 [2021-11-19 15:50:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:20,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:21,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:21,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037791646] [2021-11-19 15:50:21,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037791646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:21,020 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:21,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:50:21,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422229623] [2021-11-19 15:50:21,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:21,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:21,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:21,099 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2021-11-19 15:50:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:24,391 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-11-19 15:50:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:24,396 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 [2021-11-19 15:50:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:24,424 INFO L225 Difference]: With dead ends: 1417 [2021-11-19 15:50:24,425 INFO L226 Difference]: Without dead ends: 1415 [2021-11-19 15:50:24,427 INFO L932 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 [2021-11-19 15:50:24,431 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:24,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 15:50:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-11-19 15:50:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-11-19 15:50:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-11-19 15:50:24,592 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-11-19 15:50:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:24,593 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-11-19 15:50:24,593 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) [2021-11-19 15:50:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-11-19 15:50:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:50:24,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:24,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:50:24,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:24,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:24,811 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:24,814 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 15:50:24,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:24,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301322330] [2021-11-19 15:50:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:24,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:24,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:24,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:24,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:50:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:25,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:25,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:25,038 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 [2021-11-19 15:50:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:25,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:25,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:25,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301322330] [2021-11-19 15:50:25,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301322330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:25,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:25,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 15:50:25,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745828646] [2021-11-19 15:50:25,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:25,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:25,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:25,142 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 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) [2021-11-19 15:50:31,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:31,607 INFO L93 Difference]: Finished difference Result 1894 states and 2004 transitions. [2021-11-19 15:50:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:31,608 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 [2021-11-19 15:50:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:31,621 INFO L225 Difference]: With dead ends: 1894 [2021-11-19 15:50:31,621 INFO L226 Difference]: Without dead ends: 1894 [2021-11-19 15:50:31,622 INFO L932 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 [2021-11-19 15:50:31,624 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 1545 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:31,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1760 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-19 15:50:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-11-19 15:50:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1265. [2021-11-19 15:50:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 654 states have (on average 2.09480122324159) internal successors, (1370), 1260 states have internal predecessors, (1370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1376 transitions. [2021-11-19 15:50:31,668 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1376 transitions. Word has length 3 [2021-11-19 15:50:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:31,668 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1376 transitions. [2021-11-19 15:50:31,669 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) [2021-11-19 15:50:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1376 transitions. [2021-11-19 15:50:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:50:31,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:31,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:31,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 15:50:31,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:31,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 15:50:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:31,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746954073] [2021-11-19 15:50:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:31,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:31,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:31,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:31,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:50:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:32,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:32,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:32,065 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 [2021-11-19 15:50:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:32,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:32,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:32,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746954073] [2021-11-19 15:50:32,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746954073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:32,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:32,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:50:32,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080826122] [2021-11-19 15:50:32,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:32,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:32,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:32,133 INFO L87 Difference]: Start difference. First operand 1265 states and 1376 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:35,138 INFO L93 Difference]: Finished difference Result 1595 states and 1731 transitions. [2021-11-19 15:50:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 15:50:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:35,171 INFO L225 Difference]: With dead ends: 1595 [2021-11-19 15:50:35,171 INFO L226 Difference]: Without dead ends: 1595 [2021-11-19 15:50:35,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:35,174 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 975 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:35,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1479 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 15:50:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-11-19 15:50:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1218. [2021-11-19 15:50:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 654 states have (on average 2.018348623853211) internal successors, (1320), 1213 states have internal predecessors, (1320), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1326 transitions. [2021-11-19 15:50:35,215 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1326 transitions. Word has length 8 [2021-11-19 15:50:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:35,216 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1326 transitions. [2021-11-19 15:50:35,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1326 transitions. [2021-11-19 15:50:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:50:35,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:35,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:35,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:35,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:35,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 15:50:35,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:35,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877833194] [2021-11-19 15:50:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:35,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:35,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:35,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:50:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:35,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:35,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:35,660 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 [2021-11-19 15:50:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:35,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:35,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:35,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877833194] [2021-11-19 15:50:35,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877833194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:35,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:35,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 15:50:35,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844309456] [2021-11-19 15:50:35,815 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:35,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:35,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:35,818 INFO L87 Difference]: Start difference. First operand 1218 states and 1326 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:40,579 INFO L93 Difference]: Finished difference Result 1639 states and 1739 transitions. [2021-11-19 15:50:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:40,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 15:50:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:40,592 INFO L225 Difference]: With dead ends: 1639 [2021-11-19 15:50:40,592 INFO L226 Difference]: Without dead ends: 1639 [2021-11-19 15:50:40,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:40,593 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1392 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:40,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 1824 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 15:50:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-19 15:50:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1208. [2021-11-19 15:50:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 654 states have (on average 1.9984709480122325) internal successors, (1307), 1203 states have internal predecessors, (1307), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1313 transitions. [2021-11-19 15:50:40,629 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1313 transitions. Word has length 8 [2021-11-19 15:50:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:40,629 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1313 transitions. [2021-11-19 15:50:40,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1313 transitions. [2021-11-19 15:50:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 15:50:40,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:40,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:40,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:40,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:40,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-19 15:50:40,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:40,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045413610] [2021-11-19 15:50:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:40,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:40,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:40,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:50:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:40,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:50:40,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:41,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:41,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:41,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045413610] [2021-11-19 15:50:41,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045413610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:41,223 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:41,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:50:41,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804228043] [2021-11-19 15:50:41,223 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:41,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:41,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:41,225 INFO L87 Difference]: Start difference. First operand 1208 states and 1313 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:42,474 INFO L93 Difference]: Finished difference Result 1851 states and 1998 transitions. [2021-11-19 15:50:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:50:42,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 15:50:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:42,487 INFO L225 Difference]: With dead ends: 1851 [2021-11-19 15:50:42,487 INFO L226 Difference]: Without dead ends: 1851 [2021-11-19 15:50:42,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:50:42,491 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 754 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:42,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3651 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 15:50:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2021-11-19 15:50:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1449. [2021-11-19 15:50:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 895 states have (on average 1.9687150837988827) internal successors, (1762), 1444 states have internal predecessors, (1762), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1768 transitions. [2021-11-19 15:50:42,542 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1768 transitions. Word has length 11 [2021-11-19 15:50:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:42,542 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1768 transitions. [2021-11-19 15:50:42,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1768 transitions. [2021-11-19 15:50:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 15:50:42,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:42,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:42,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:42,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:42,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-19 15:50:42,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:42,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571144163] [2021-11-19 15:50:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:42,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:42,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:42,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:42,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:50:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:42,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:42,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:42,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:42,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:42,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571144163] [2021-11-19 15:50:42,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571144163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:42,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:42,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:50:42,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121369500] [2021-11-19 15:50:42,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:42,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:42,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:42,956 INFO L87 Difference]: Start difference. First operand 1449 states and 1768 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:43,008 INFO L93 Difference]: Finished difference Result 1611 states and 1916 transitions. [2021-11-19 15:50:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:43,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 15:50:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:43,017 INFO L225 Difference]: With dead ends: 1611 [2021-11-19 15:50:43,018 INFO L226 Difference]: Without dead ends: 1611 [2021-11-19 15:50:43,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:43,019 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 583 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:43,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2820 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-19 15:50:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1389. [2021-11-19 15:50:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 859 states have (on average 1.951105937136205) internal successors, (1676), 1384 states have internal predecessors, (1676), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1682 transitions. [2021-11-19 15:50:43,054 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1682 transitions. Word has length 13 [2021-11-19 15:50:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:43,054 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1682 transitions. [2021-11-19 15:50:43,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1682 transitions. [2021-11-19 15:50:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 15:50:43,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:43,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:43,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:43,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:43,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:43,272 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-19 15:50:43,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:43,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711160222] [2021-11-19 15:50:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:43,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:43,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:43,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:43,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:50:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:43,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:43,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:43,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:43,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:43,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711160222] [2021-11-19 15:50:43,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711160222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:43,527 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:43,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:50:43,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654996993] [2021-11-19 15:50:43,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:43,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:43,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:50:43,530 INFO L87 Difference]: Start difference. First operand 1389 states and 1682 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:43,639 INFO L93 Difference]: Finished difference Result 1583 states and 1860 transitions. [2021-11-19 15:50:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:43,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-19 15:50:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:43,651 INFO L225 Difference]: With dead ends: 1583 [2021-11-19 15:50:43,651 INFO L226 Difference]: Without dead ends: 1583 [2021-11-19 15:50:43,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:43,653 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 554 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:43,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3907 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-11-19 15:50:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1359. [2021-11-19 15:50:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 843 states have (on average 1.9193357058125742) internal successors, (1618), 1354 states have internal predecessors, (1618), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1624 transitions. [2021-11-19 15:50:43,697 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1624 transitions. Word has length 15 [2021-11-19 15:50:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:43,698 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1624 transitions. [2021-11-19 15:50:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1624 transitions. [2021-11-19 15:50:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:50:43,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:43,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:43,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:43,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:43,916 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-11-19 15:50:43,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:43,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409852163] [2021-11-19 15:50:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:43,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:43,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:43,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:50:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:44,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:44,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:44,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:44,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:44,246 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 15:50:44,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 15:50:44,330 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 15:50:44,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 15:50:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:44,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:44,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:44,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409852163] [2021-11-19 15:50:44,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409852163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:44,480 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:44,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:50:44,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663900061] [2021-11-19 15:50:44,480 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:44,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:44,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:44,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:44,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:44,481 INFO L87 Difference]: Start difference. First operand 1359 states and 1624 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) [2021-11-19 15:50:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:47,012 INFO L93 Difference]: Finished difference Result 1795 states and 2119 transitions. [2021-11-19 15:50:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:47,012 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 16 [2021-11-19 15:50:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:47,021 INFO L225 Difference]: With dead ends: 1795 [2021-11-19 15:50:47,021 INFO L226 Difference]: Without dead ends: 1795 [2021-11-19 15:50:47,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:50:47,023 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 424 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 5312 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 15:50:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-19 15:50:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1358. [2021-11-19 15:50:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 842 states have (on average 1.9192399049881235) internal successors, (1616), 1353 states have internal predecessors, (1616), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1622 transitions. [2021-11-19 15:50:47,056 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1622 transitions. Word has length 16 [2021-11-19 15:50:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:47,057 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 1622 transitions. [2021-11-19 15:50:47,057 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) [2021-11-19 15:50:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1622 transitions. [2021-11-19 15:50:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 15:50:47,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:47,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:47,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:47,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,274 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:47,274 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 15:50:47,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:47,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302205463] [2021-11-19 15:50:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:47,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:47,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:47,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:50:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:47,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:47,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:47,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:47,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:47,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302205463] [2021-11-19 15:50:47,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302205463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:47,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:47,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:50:47,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010129945] [2021-11-19 15:50:47,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:47,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:47,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:47,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:47,524 INFO L87 Difference]: Start difference. First operand 1358 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:47,564 INFO L93 Difference]: Finished difference Result 1298 states and 1536 transitions. [2021-11-19 15:50:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:47,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-19 15:50:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:47,569 INFO L225 Difference]: With dead ends: 1298 [2021-11-19 15:50:47,569 INFO L226 Difference]: Without dead ends: 1298 [2021-11-19 15:50:47,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:47,570 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 2178 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:47,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 1127 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:47,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-19 15:50:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2021-11-19 15:50:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 806 states have (on average 1.8982630272952854) internal successors, (1530), 1293 states have internal predecessors, (1530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1536 transitions. [2021-11-19 15:50:47,598 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1536 transitions. Word has length 18 [2021-11-19 15:50:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:47,599 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1536 transitions. [2021-11-19 15:50:47,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1536 transitions. [2021-11-19 15:50:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:50:47,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:47,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:47,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:47,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 15:50:47,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:47,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473190060] [2021-11-19 15:50:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:47,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:47,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:47,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:50:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:47,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:47,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:48,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:48,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:48,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473190060] [2021-11-19 15:50:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473190060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:48,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:48,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:50:48,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199497951] [2021-11-19 15:50:48,058 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:48,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:48,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:50:48,059 INFO L87 Difference]: Start difference. First operand 1298 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-19 15:50:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:48,151 INFO L93 Difference]: Finished difference Result 1270 states and 1480 transitions. [2021-11-19 15:50:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 20 [2021-11-19 15:50:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:48,158 INFO L225 Difference]: With dead ends: 1270 [2021-11-19 15:50:48,158 INFO L226 Difference]: Without dead ends: 1270 [2021-11-19 15:50:48,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:48,159 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2110 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:48,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 2135 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:48,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-19 15:50:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1268. [2021-11-19 15:50:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 790 states have (on average 1.8632911392405063) internal successors, (1472), 1263 states have internal predecessors, (1472), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1478 transitions. [2021-11-19 15:50:48,187 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1478 transitions. Word has length 20 [2021-11-19 15:50:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:48,188 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1478 transitions. [2021-11-19 15:50:48,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-19 15:50:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1478 transitions. [2021-11-19 15:50:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:50:48,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:48,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:48,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:48,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:48,403 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 15:50:48,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:48,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475453327] [2021-11-19 15:50:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:48,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:48,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:48,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:48,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:50:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:48,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:48,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:48,608 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 [2021-11-19 15:50:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:48,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:48,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:48,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475453327] [2021-11-19 15:50:48,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475453327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:48,901 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:48,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:48,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504076439] [2021-11-19 15:50:48,902 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:48,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:48,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:48,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:48,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:48,903 INFO L87 Difference]: Start difference. First operand 1268 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:52,196 INFO L93 Difference]: Finished difference Result 1850 states and 2182 transitions. [2021-11-19 15:50:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:50:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-19 15:50:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:52,210 INFO L225 Difference]: With dead ends: 1850 [2021-11-19 15:50:52,210 INFO L226 Difference]: Without dead ends: 1850 [2021-11-19 15:50:52,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:50:52,212 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1719 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:52,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 1222 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 15:50:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2021-11-19 15:50:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1264. [2021-11-19 15:50:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 790 states have (on average 1.8531645569620254) internal successors, (1464), 1259 states have internal predecessors, (1464), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:50:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1470 transitions. [2021-11-19 15:50:52,246 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1470 transitions. Word has length 34 [2021-11-19 15:50:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:52,247 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1470 transitions. [2021-11-19 15:50:52,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1470 transitions. [2021-11-19 15:50:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:50:52,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:52,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:52,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:52,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:52,464 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:50:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 15:50:52,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:52,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890443310] [2021-11-19 15:50:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:52,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:52,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:52,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:52,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:50:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:52,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:50:52,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:52,687 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 [2021-11-19 15:50:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:53,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:53,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:53,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890443310] [2021-11-19 15:50:53,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890443310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:53,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:53,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:50:53,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733041413] [2021-11-19 15:50:53,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:53,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:53,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:53,591 INFO L87 Difference]: Start difference. First operand 1264 states and 1470 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:03,232 INFO L93 Difference]: Finished difference Result 1977 states and 2286 transitions. [2021-11-19 15:51:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:51:03,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-19 15:51:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:03,242 INFO L225 Difference]: With dead ends: 1977 [2021-11-19 15:51:03,243 INFO L226 Difference]: Without dead ends: 1977 [2021-11-19 15:51:03,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:03,244 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 2009 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:03,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 3001 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-19 15:51:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-19 15:51:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1260. [2021-11-19 15:51:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 790 states have (on average 1.8430379746835444) internal successors, (1456), 1255 states have internal predecessors, (1456), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:51:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1462 transitions. [2021-11-19 15:51:03,277 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1462 transitions. Word has length 34 [2021-11-19 15:51:03,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:03,278 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 1462 transitions. [2021-11-19 15:51:03,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1462 transitions. [2021-11-19 15:51:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 15:51:03,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:03,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:03,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:03,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:03,495 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-19 15:51:03,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:03,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327427293] [2021-11-19 15:51:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:03,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:03,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:03,497 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:03,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:51:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:03,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:03,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:03,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:04,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:04,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327427293] [2021-11-19 15:51:04,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327427293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:04,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:04,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:51:04,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209592308] [2021-11-19 15:51:04,033 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:04,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:51:04,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:51:04,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:04,036 INFO L87 Difference]: Start difference. First operand 1260 states and 1462 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:04,102 INFO L93 Difference]: Finished difference Result 1248 states and 1442 transitions. [2021-11-19 15:51:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:04,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2021-11-19 15:51:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:04,115 INFO L225 Difference]: With dead ends: 1248 [2021-11-19 15:51:04,116 INFO L226 Difference]: Without dead ends: 1248 [2021-11-19 15:51:04,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:51:04,118 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 1036 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:04,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2113 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:51:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-19 15:51:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-11-19 15:51:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 778 states have (on average 1.845758354755784) internal successors, (1436), 1243 states have internal predecessors, (1436), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:51:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1442 transitions. [2021-11-19 15:51:04,145 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1442 transitions. Word has length 52 [2021-11-19 15:51:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:04,146 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1442 transitions. [2021-11-19 15:51:04,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1442 transitions. [2021-11-19 15:51:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 15:51:04,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:04,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:04,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:04,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:04,373 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 15:51:04,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:04,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623552825] [2021-11-19 15:51:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:04,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:04,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:04,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:04,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:51:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:04,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:51:04,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:04,748 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 [2021-11-19 15:51:04,757 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 [2021-11-19 15:51:05,576 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 15:51:05,576 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 24 treesize of output 26 [2021-11-19 15:51:05,602 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:51:05,602 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 23 treesize of output 19 [2021-11-19 15:51:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:05,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:10,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:10,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623552825] [2021-11-19 15:51:10,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623552825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:10,917 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:10,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:51:10,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7583517] [2021-11-19 15:51:10,918 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:10,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:51:10,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:10,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:51:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 15:51:10,919 INFO L87 Difference]: Start difference. First operand 1248 states and 1442 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:16,782 INFO L93 Difference]: Finished difference Result 1795 states and 2079 transitions. [2021-11-19 15:51:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:51:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-19 15:51:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:16,791 INFO L225 Difference]: With dead ends: 1795 [2021-11-19 15:51:16,791 INFO L226 Difference]: Without dead ends: 1795 [2021-11-19 15:51:16,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 15:51:16,792 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 1326 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1580 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:16,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 2161 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1574 Invalid, 0 Unknown, 1580 Unchecked, 5.8s Time] [2021-11-19 15:51:16,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-19 15:51:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1226. [2021-11-19 15:51:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 788 states have (on average 1.8045685279187818) internal successors, (1422), 1221 states have internal predecessors, (1422), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:51:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1428 transitions. [2021-11-19 15:51:16,819 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1428 transitions. Word has length 60 [2021-11-19 15:51:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:16,820 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1428 transitions. [2021-11-19 15:51:16,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1428 transitions. [2021-11-19 15:51:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 15:51:16,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:16,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:16,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:17,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:17,039 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 15:51:17,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:17,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146993810] [2021-11-19 15:51:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:17,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:17,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:17,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:17,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:51:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:17,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:17,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:17,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:17,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 15:51:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:18,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:18,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146993810] [2021-11-19 15:51:18,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146993810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:18,086 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:18,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:51:18,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088298660] [2021-11-19 15:51:18,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:18,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:51:18,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:51:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:51:18,089 INFO L87 Difference]: Start difference. First operand 1226 states and 1428 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:21,606 INFO L93 Difference]: Finished difference Result 1224 states and 1426 transitions. [2021-11-19 15:51:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 15:51:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:21,614 INFO L225 Difference]: With dead ends: 1224 [2021-11-19 15:51:21,615 INFO L226 Difference]: Without dead ends: 1224 [2021-11-19 15:51:21,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:51:21,616 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 813 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:21,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1092 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 15:51:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-19 15:51:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2021-11-19 15:51:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 788 states have (on average 1.8020304568527918) internal successors, (1420), 1219 states have internal predecessors, (1420), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:51:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1426 transitions. [2021-11-19 15:51:21,644 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1426 transitions. Word has length 62 [2021-11-19 15:51:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:21,645 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1426 transitions. [2021-11-19 15:51:21,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1426 transitions. [2021-11-19 15:51:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 15:51:21,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:21,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:21,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:21,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:21,864 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 15:51:21,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:21,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180420790] [2021-11-19 15:51:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:21,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:21,868 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:21,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:51:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:22,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:51:22,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:22,292 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 [2021-11-19 15:51:22,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 15:51:22,359 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 25 treesize of output 13 [2021-11-19 15:51:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:22,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:22,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:22,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180420790] [2021-11-19 15:51:22,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180420790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:22,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:22,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:51:22,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701274738] [2021-11-19 15:51:22,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:22,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:22,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:51:22,546 INFO L87 Difference]: Start difference. First operand 1224 states and 1426 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:26,579 INFO L93 Difference]: Finished difference Result 1223 states and 1425 transitions. [2021-11-19 15:51:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:51:26,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-19 15:51:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:26,589 INFO L225 Difference]: With dead ends: 1223 [2021-11-19 15:51:26,589 INFO L226 Difference]: Without dead ends: 1223 [2021-11-19 15:51:26,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:51:26,590 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 4 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:26,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2584 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-19 15:51:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-11-19 15:51:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2021-11-19 15:51:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 788 states have (on average 1.8007614213197969) internal successors, (1419), 1218 states have internal predecessors, (1419), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:51:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1425 transitions. [2021-11-19 15:51:26,615 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1425 transitions. Word has length 65 [2021-11-19 15:51:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:26,616 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1425 transitions. [2021-11-19 15:51:26,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1425 transitions. [2021-11-19 15:51:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 15:51:26,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:26,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:26,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:26,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,844 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 15:51:26,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:26,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862936409] [2021-11-19 15:51:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:26,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:26,847 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:26,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:51:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:27,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:51:27,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:27,197 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 [2021-11-19 15:51:27,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 15:51:27,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 15:51:27,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 15:51:27,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 15:51:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:27,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:27,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:27,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862936409] [2021-11-19 15:51:27,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862936409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:27,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:27,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 15:51:27,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998276924] [2021-11-19 15:51:27,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:27,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:27,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:27,695 INFO L87 Difference]: Start difference. First operand 1223 states and 1425 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:39,874 INFO L93 Difference]: Finished difference Result 1222 states and 1424 transitions. [2021-11-19 15:51:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:51:39,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 65 [2021-11-19 15:51:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:39,881 INFO L225 Difference]: With dead ends: 1222 [2021-11-19 15:51:39,882 INFO L226 Difference]: Without dead ends: 1222 [2021-11-19 15:51:39,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:51:39,883 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 3 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:39,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3713 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2021-11-19 15:51:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-19 15:51:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2021-11-19 15:51:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 787 states have (on average 1.8017789072426937) internal successors, (1418), 1217 states have internal predecessors, (1418), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 15:51:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1424 transitions. [2021-11-19 15:51:39,911 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1424 transitions. Word has length 65 [2021-11-19 15:51:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:39,912 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1424 transitions. [2021-11-19 15:51:39,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1424 transitions. [2021-11-19 15:51:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 15:51:39,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:39,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:39,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:40,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:40,130 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1088613615, now seen corresponding path program 1 times [2021-11-19 15:51:40,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:40,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709065209] [2021-11-19 15:51:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:40,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:40,132 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:40,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:51:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:40,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:40,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:40,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:40,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:40,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709065209] [2021-11-19 15:51:40,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709065209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:40,738 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:40,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:51:40,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344384153] [2021-11-19 15:51:40,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:40,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:51:40,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:51:40,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:51:40,740 INFO L87 Difference]: Start difference. First operand 1222 states and 1424 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 15:51:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:40,856 INFO L93 Difference]: Finished difference Result 1232 states and 1437 transitions. [2021-11-19 15:51:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:51:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-19 15:51:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:40,864 INFO L225 Difference]: With dead ends: 1232 [2021-11-19 15:51:40,864 INFO L226 Difference]: Without dead ends: 1232 [2021-11-19 15:51:40,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:40,865 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 11 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:40,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3048 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:51:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-19 15:51:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2021-11-19 15:51:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 795 states have (on average 1.79874213836478) internal successors, (1430), 1226 states have internal predecessors, (1430), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 15:51:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1437 transitions. [2021-11-19 15:51:40,893 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1437 transitions. Word has length 73 [2021-11-19 15:51:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:40,894 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1437 transitions. [2021-11-19 15:51:40,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 15:51:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1437 transitions. [2021-11-19 15:51:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 15:51:40,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:40,895 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:40,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:41,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:41,108 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash 973507983, now seen corresponding path program 1 times [2021-11-19 15:51:41,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:41,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248279455] [2021-11-19 15:51:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:41,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:41,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:41,112 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:41,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:51:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:41,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:51:41,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:41,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:41,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:41,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248279455] [2021-11-19 15:51:41,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248279455] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:41,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1514203566] [2021-11-19 15:51:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:41,847 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:41,849 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:41,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 15:51:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:42,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:51:42,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:42,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:42,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1514203566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:42,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187784586] [2021-11-19 15:51:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:42,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:51:42,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:51:42,501 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:51:42,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 15:51:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:42,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:51:42,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:42,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:43,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187784586] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:43,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:51:43,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 15:51:43,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718729118] [2021-11-19 15:51:43,200 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:51:43,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:51:43,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:51:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:51:43,201 INFO L87 Difference]: Start difference. First operand 1232 states and 1437 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 15:51:43,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:43,801 INFO L93 Difference]: Finished difference Result 1246 states and 1454 transitions. [2021-11-19 15:51:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 15:51:43,802 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-19 15:51:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:43,808 INFO L225 Difference]: With dead ends: 1246 [2021-11-19 15:51:43,809 INFO L226 Difference]: Without dead ends: 1240 [2021-11-19 15:51:43,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:51:43,810 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 40 mSDsluCounter, 5075 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:43,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 6094 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:51:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-11-19 15:51:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2021-11-19 15:51:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 801 states have (on average 1.794007490636704) internal successors, (1437), 1232 states have internal predecessors, (1437), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 15:51:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1444 transitions. [2021-11-19 15:51:43,842 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1444 transitions. Word has length 75 [2021-11-19 15:51:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:43,843 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1444 transitions. [2021-11-19 15:51:43,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 15:51:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1444 transitions. [2021-11-19 15:51:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 15:51:43,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:43,845 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:43,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:44,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:44,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-19 15:51:44,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:44,463 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 15:51:44,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1648945, now seen corresponding path program 2 times [2021-11-19 15:51:44,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:44,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297426160] [2021-11-19 15:51:44,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:51:44,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:44,466 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:44,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 15:51:44,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:44,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:44,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:51:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:45,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:45,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:45,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297426160] [2021-11-19 15:51:45,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297426160] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:45,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1384690063] [2021-11-19 15:51:45,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:51:45,841 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:45,847 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:45,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 15:51:46,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:46,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:46,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:51:46,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:46,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:47,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1384690063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:47,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535419679] [2021-11-19 15:51:47,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:51:47,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:51:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:51:47,080 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:51:47,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-19 15:52:19,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:52:19,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:52:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 15:52:19,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:19,605 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 [2021-11-19 15:52:19,931 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 [2021-11-19 15:52:19,949 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 15:52:19,949 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 14 treesize of output 14 [2021-11-19 15:52:20,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 15:52:20,049 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 23 treesize of output 19 [2021-11-19 15:52:20,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-19 15:52:20,320 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 19 treesize of output 13 [2021-11-19 15:54:21,267 WARN L227 SmtUtils]: Spent 16.56s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:54:21,268 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 15:54:21,268 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 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-19 15:55:06,844 WARN L227 SmtUtils]: Spent 45.56s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:55:06,844 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 15:55:06,845 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 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-19 15:55:18,352 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 15:55:18,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-19 15:55:18,379 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 15:55:18,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-19 15:55:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:55:28,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:55:37,686 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 15:55:59,736 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (let ((.cse3 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse3))) (let ((.cse2 (bvadd .cse4 (_ bv20 32)))) (and (bvule .cse2 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse3))) (bvule (bvadd (_ bv16 32) .cse4) .cse2))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from false [2021-11-19 15:59:37,441 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32))) (let ((.cse16 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse17) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse17) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse17) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from false [2021-11-19 15:59:43,990 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse8 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse8) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse8))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse9 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse10))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse9) (bvadd .cse9 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 .cse12) .cse13 .cse12) .cse14 .cse12) .cse15 .cse12) .cse16 .cse12) .cse17 .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from true [2021-11-19 15:59:52,411 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse9 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse11 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5) .cse9 .cse5) .cse10 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from false [2021-11-19 15:59:54,420 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse9 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse11 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5) .cse9 .cse5) .cse10 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from true [2021-11-19 16:00:43,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 16:00:43,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 16:00:43,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 16:00:43,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667987710] [2021-11-19 16:00:43,339 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 16:00:43,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 16:00:43,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 16:00:43,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 16:00:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1126, Unknown=125, NotChecked=300, Total=1722 [2021-11-19 16:00:43,341 INFO L87 Difference]: Start difference. First operand 1238 states and 1444 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 16:01:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 16:01:42,482 INFO L93 Difference]: Finished difference Result 1264 states and 1480 transitions. [2021-11-19 16:01:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 16:01:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-19 16:01:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 16:01:42,488 INFO L225 Difference]: With dead ends: 1264 [2021-11-19 16:01:42,488 INFO L226 Difference]: Without dead ends: 1260 [2021-11-19 16:01:42,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 434.4s TimeCoverageRelationStatistics Valid=512, Invalid=2554, Unknown=142, NotChecked=452, Total=3660 [2021-11-19 16:01:42,491 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 59 mSDsluCounter, 9162 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 10185 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 16:01:42,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 10185 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 16:01:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-19 16:01:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1250. [2021-11-19 16:01:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 813 states have (on average 1.7872078720787208) internal successors, (1453), 1244 states have internal predecessors, (1453), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 16:01:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1460 transitions. [2021-11-19 16:01:42,522 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1460 transitions. Word has length 79 [2021-11-19 16:01:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 16:01:42,523 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1460 transitions. [2021-11-19 16:01:42,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 16:01:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1460 transitions. [2021-11-19 16:01:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 16:01:42,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 16:01:42,525 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 16:01:42,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-19 16:01:42,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-19 16:01:42,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 16:01:43,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 16:01:43,131 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-19 16:01:43,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 16:01:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1487112527, now seen corresponding path program 3 times [2021-11-19 16:01:43,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 16:01:43,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095953554] [2021-11-19 16:01:43,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 16:01:43,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 16:01:43,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 16:01:43,133 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 16:01:43,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 16:01:43,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 16:01:43,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 16:01:43,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 16:01:43,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 16:01:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 16:01:44,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 16:01:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 16:01:46,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 16:01:46,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095953554] [2021-11-19 16:01:46,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095953554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 16:01:46,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1251771964] [2021-11-19 16:01:46,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 16:01:46,865 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 16:01:46,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 16:01:46,866 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 16:01:46,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 16:01:48,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 16:01:48,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 16:01:49,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 16:01:49,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 16:01:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 16:01:49,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 16:01:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 16:01:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1251771964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 16:01:49,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203106269] [2021-11-19 16:01:49,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 16:01:49,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 16:01:49,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 16:01:49,870 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 16:01:49,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3623311-c83e-48e0-a8e9-94c8a7a0356e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process