./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V --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 94599b38b669e42115f92cee257d9ed4ed5d4777dca7d2ee690bacb4e0d226f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:09,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:09,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:09,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:09,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:09,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:09,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:09,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:09,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:09,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:09,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:09,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:09,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:09,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:09,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:09,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:09,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:09,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:09,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:09,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:09,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:09,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:09,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:09,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:09,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:09,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:09,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:09,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:09,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:09,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:09,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:09,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:09,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:09,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:09,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:09,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:09,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:09,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:09,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:09,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:09,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:09,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:16:09,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:09,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:09,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:09,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:09,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:09,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:09,774 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:09,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:09,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:09,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:09,776 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:09,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:09,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:09,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:09,777 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:09,777 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:09,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:09,778 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:09,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:16:09,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:16:09,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:09,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:16:09,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:16:09,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:09,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:16:09,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:09,784 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:16:09,784 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:16:09,785 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:16:09,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:09,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:16:09,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:16:09,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:09,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:09,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:09,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:09,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:09,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:09,787 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:09,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:09,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:09,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:09,788 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_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94599b38b669e42115f92cee257d9ed4ed5d4777dca7d2ee690bacb4e0d226f0 [2021-11-23 02:16:10,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:10,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:10,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:10,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:10,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:10,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i [2021-11-23 02:16:10,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/3bb645351/c03a5cfc9fdd456f960c3bfd4e93178a/FLAG2c1a6658c [2021-11-23 02:16:10,937 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:10,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i [2021-11-23 02:16:10,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/3bb645351/c03a5cfc9fdd456f960c3bfd4e93178a/FLAG2c1a6658c [2021-11-23 02:16:11,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/3bb645351/c03a5cfc9fdd456f960c3bfd4e93178a [2021-11-23 02:16:11,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:11,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:11,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:11,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:11,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:11,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b212034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11, skipping insertion in model container [2021-11-23 02:16:11,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:11,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:11,666 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[33021,33034] [2021-11-23 02:16:11,929 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[49681,49694] [2021-11-23 02:16:11,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:11,990 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) [2021-11-23 02:16:11,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1793ddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11, skipping insertion in model container [2021-11-23 02:16:11,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:11,991 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:16:11,994 INFO L158 Benchmark]: Toolchain (without parser) took 878.74ms. Allocated memory is still 98.6MB. Free memory was 59.3MB in the beginning and 58.4MB in the end (delta: 895.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:16:11,995 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:16:11,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 875.71ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 58.4MB in the end (delta: 650.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:16:11,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 875.71ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 58.4MB in the end (delta: 650.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V --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 94599b38b669e42115f92cee257d9ed4ed5d4777dca7d2ee690bacb4e0d226f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:14,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:14,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:14,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:14,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:14,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:14,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:14,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:14,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:14,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:14,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:14,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:14,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:14,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:14,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:14,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:14,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:14,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:14,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:14,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:14,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:14,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:14,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:14,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:14,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:14,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:14,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:14,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:14,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:14,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:14,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:14,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:14,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:14,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:14,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:14,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:14,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:14,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:14,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:14,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:14,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:14,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:16:14,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:14,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:14,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:14,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:14,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:14,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:14,643 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:14,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:14,644 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:14,644 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:14,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:14,644 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:14,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:16:14,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:16:14,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:14,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:16:14,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:16:14,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:14,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:16:14,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:14,648 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:16:14,648 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:16:14,648 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:16:14,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:14,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:16:14,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:16:14,649 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:16:14,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:16:14,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:14,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:14,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:16:14,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:14,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:14,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:14,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:14,652 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:16:14,652 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:16:14,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:14,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:14,668 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_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94599b38b669e42115f92cee257d9ed4ed5d4777dca7d2ee690bacb4e0d226f0 [2021-11-23 02:16:15,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:15,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:15,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:15,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:15,183 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:15,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i [2021-11-23 02:16:15,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/2ea2bb2c4/2840bcb4d38349b48f28634157c2b021/FLAG9557b3238 [2021-11-23 02:16:16,091 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:16,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i [2021-11-23 02:16:16,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/2ea2bb2c4/2840bcb4d38349b48f28634157c2b021/FLAG9557b3238 [2021-11-23 02:16:16,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/data/2ea2bb2c4/2840bcb4d38349b48f28634157c2b021 [2021-11-23 02:16:16,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:16,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:16,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:16,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:16,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:16,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:16" (1/1) ... [2021-11-23 02:16:16,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5686197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:16, skipping insertion in model container [2021-11-23 02:16:16,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:16" (1/1) ... [2021-11-23 02:16:16,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:16,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:16,873 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[33021,33034] [2021-11-23 02:16:17,169 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[49681,49694] [2021-11-23 02:16:17,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:17,219 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:16:17,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:17,271 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[33021,33034] [2021-11-23 02:16:17,358 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[49681,49694] [2021-11-23 02:16:17,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:17,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:17,424 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[33021,33034] [2021-11-23 02:16:17,506 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_02416f08-7c82-4111-8f47-cfe80331b363/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i[49681,49694] [2021-11-23 02:16:17,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:17,573 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:17,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17 WrapperNode [2021-11-23 02:16:17,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:17,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:17,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:17,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:17,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:17,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:17,799 INFO L137 Inliner]: procedures = 180, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1721 [2021-11-23 02:16:17,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:17,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:17,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:17,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:17,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:17,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:17,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:17,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:17,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:18,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:18,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:18,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:18,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:18,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:18,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:18,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (1/1) ... [2021-11-23 02:16:18,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:18,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:18,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:18,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:16:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:16:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:16:18,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:16:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:16:18,134 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:16:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:16:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:16:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:16:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:16:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:16:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:16:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:16:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:16:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:18,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:18,549 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:18,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:18,555 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 02:16:27,311 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:27,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:27,346 INFO L301 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-23 02:16:27,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:27 BoogieIcfgContainer [2021-11-23 02:16:27,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:27,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:27,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:27,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:27,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:16" (1/3) ... [2021-11-23 02:16:27,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69756dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:27, skipping insertion in model container [2021-11-23 02:16:27,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:17" (2/3) ... [2021-11-23 02:16:27,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69756dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:27, skipping insertion in model container [2021-11-23 02:16:27,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:27" (3/3) ... [2021-11-23 02:16:27,365 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-3.i [2021-11-23 02:16:27,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:27,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-23 02:16:27,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:27,427 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 [2021-11-23 02:16:27,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-23 02:16:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:16:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:16:27,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:27,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:16:27,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-23 02:16:27,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:27,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80397041] [2021-11-23 02:16:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:27,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:27,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:27,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:27,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:16:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:27,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:16:27,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:27,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:27,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:27,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80397041] [2021-11-23 02:16:27,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80397041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:27,936 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:27,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:16:27,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174780787] [2021-11-23 02:16:27,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:27,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:16:27,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:16:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:28,019 INFO L87 Difference]: Start difference. First operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-23 02:16:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:28,171 INFO L93 Difference]: Finished difference Result 1815 states and 1917 transitions. [2021-11-23 02:16:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:16:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-11-23 02:16:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:28,214 INFO L225 Difference]: With dead ends: 1815 [2021-11-23 02:16:28,214 INFO L226 Difference]: Without dead ends: 1813 [2021-11-23 02:16:28,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:28,220 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:28,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2021-11-23 02:16:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1813. [2021-11-23 02:16:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 884 states have (on average 2.1414027149321266) internal successors, (1893), 1804 states have internal predecessors, (1893), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:16:28,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 1915 transitions. [2021-11-23 02:16:28,349 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 1915 transitions. Word has length 5 [2021-11-23 02:16:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:28,350 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 1915 transitions. [2021-11-23 02:16:28,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-23 02:16:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 1915 transitions. [2021-11-23 02:16:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:16:28,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:28,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:16:28,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 02:16:28,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:28,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-23 02:16:28,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:28,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100416801] [2021-11-23 02:16:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:28,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:28,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:28,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:28,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:16:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:28,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:16:28,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:28,791 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 [2021-11-23 02:16:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:28,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:28,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:28,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100416801] [2021-11-23 02:16:28,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100416801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:28,827 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:28,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:16:28,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735845049] [2021-11-23 02:16:28,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:28,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:28,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:28,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:28,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:28,831 INFO L87 Difference]: Start difference. First operand 1813 states and 1915 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-23 02:16:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:32,663 INFO L93 Difference]: Finished difference Result 2069 states and 2214 transitions. [2021-11-23 02:16:32,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:32,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-11-23 02:16:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:32,676 INFO L225 Difference]: With dead ends: 2069 [2021-11-23 02:16:32,710 INFO L226 Difference]: Without dead ends: 2069 [2021-11-23 02:16:32,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:32,712 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 1369 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:32,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1809 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 02:16:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-11-23 02:16:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1798. [2021-11-23 02:16:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 960 states have (on average 2.017708333333333) internal successors, (1937), 1789 states have internal predecessors, (1937), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:16:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1959 transitions. [2021-11-23 02:16:32,773 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1959 transitions. Word has length 5 [2021-11-23 02:16:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:32,774 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 1959 transitions. [2021-11-23 02:16:32,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-23 02:16:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1959 transitions. [2021-11-23 02:16:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:16:32,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:32,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:16:32,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 02:16:32,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:32,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-23 02:16:32,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:32,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868393790] [2021-11-23 02:16:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:32,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:32,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:33,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:16:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:33,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:33,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:33,182 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 [2021-11-23 02:16:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:33,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:33,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:33,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868393790] [2021-11-23 02:16:33,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868393790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:33,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:33,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:16:33,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500463541] [2021-11-23 02:16:33,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:33,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:16:33,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:16:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:33,309 INFO L87 Difference]: Start difference. First operand 1798 states and 1959 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-23 02:16:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:43,654 INFO L93 Difference]: Finished difference Result 2369 states and 2581 transitions. [2021-11-23 02:16:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:16:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-23 02:16:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:43,668 INFO L225 Difference]: With dead ends: 2369 [2021-11-23 02:16:43,669 INFO L226 Difference]: Without dead ends: 2369 [2021-11-23 02:16:43,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:43,671 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 825 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:43,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 3271 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2021-11-23 02:16:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-11-23 02:16:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1954. [2021-11-23 02:16:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1126 states have (on average 1.992007104795737) internal successors, (2243), 1945 states have internal predecessors, (2243), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 02:16:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2265 transitions. [2021-11-23 02:16:43,729 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2265 transitions. Word has length 5 [2021-11-23 02:16:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:43,729 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 2265 transitions. [2021-11-23 02:16:43,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-23 02:16:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2265 transitions. [2021-11-23 02:16:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 02:16:43,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:43,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 02:16:43,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:43,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:43,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-23 02:16:43,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380295639] [2021-11-23 02:16:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:43,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:43,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:43,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:16:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:44,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:16:44,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:44,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:44,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:44,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380295639] [2021-11-23 02:16:44,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380295639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:44,186 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:44,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:16:44,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952750187] [2021-11-23 02:16:44,187 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:44,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:16:44,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:16:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:44,189 INFO L87 Difference]: Start difference. First operand 1954 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-23 02:16:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:44,415 INFO L93 Difference]: Finished difference Result 3516 states and 4119 transitions. [2021-11-23 02:16:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:16:44,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-23 02:16:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:44,435 INFO L225 Difference]: With dead ends: 3516 [2021-11-23 02:16:44,435 INFO L226 Difference]: Without dead ends: 3516 [2021-11-23 02:16:44,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:44,436 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 2754 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:44,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2776 Valid, 4306 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-11-23 02:16:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 2899. [2021-11-23 02:16:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2066 states have (on average 1.9719264278799613) internal successors, (4074), 2884 states have internal predecessors, (4074), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:16:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4118 transitions. [2021-11-23 02:16:44,525 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4118 transitions. Word has length 6 [2021-11-23 02:16:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:44,525 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 4118 transitions. [2021-11-23 02:16:44,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-23 02:16:44,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4118 transitions. [2021-11-23 02:16:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:16:44,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:44,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:44,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:44,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:44,738 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-23 02:16:44,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:44,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11899378] [2021-11-23 02:16:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:44,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:44,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:44,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:44,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:16:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:44,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:16:44,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:44,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:45,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11899378] [2021-11-23 02:16:45,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11899378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:45,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:45,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:16:45,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412212724] [2021-11-23 02:16:45,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:45,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:16:45,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:16:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:45,007 INFO L87 Difference]: Start difference. First operand 2899 states and 4118 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:45,110 INFO L93 Difference]: Finished difference Result 2839 states and 4032 transitions. [2021-11-23 02:16:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:16:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:45,133 INFO L225 Difference]: With dead ends: 2839 [2021-11-23 02:16:45,133 INFO L226 Difference]: Without dead ends: 2839 [2021-11-23 02:16:45,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:45,135 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 3472 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:45,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3483 Valid, 1794 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2021-11-23 02:16:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2839. [2021-11-23 02:16:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2030 states have (on average 1.9645320197044336) internal successors, (3988), 2824 states have internal predecessors, (3988), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:16:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4032 transitions. [2021-11-23 02:16:45,218 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 4032 transitions. Word has length 11 [2021-11-23 02:16:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:45,219 INFO L470 AbstractCegarLoop]: Abstraction has 2839 states and 4032 transitions. [2021-11-23 02:16:45,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 4032 transitions. [2021-11-23 02:16:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:16:45,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:45,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:45,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:45,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:45,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-23 02:16:45,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673649743] [2021-11-23 02:16:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:45,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:45,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:45,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:45,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:16:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:45,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:45,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:45,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:45,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:45,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673649743] [2021-11-23 02:16:45,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673649743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:45,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:45,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 02:16:45,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965612568] [2021-11-23 02:16:45,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:45,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:16:45,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:16:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:16:45,684 INFO L87 Difference]: Start difference. First operand 2839 states and 4032 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:45,771 INFO L93 Difference]: Finished difference Result 2811 states and 3976 transitions. [2021-11-23 02:16:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:16:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:16:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:45,787 INFO L225 Difference]: With dead ends: 2811 [2021-11-23 02:16:45,787 INFO L226 Difference]: Without dead ends: 2811 [2021-11-23 02:16:45,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:16:45,788 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1707 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:45,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 3491 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-23 02:16:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2809. [2021-11-23 02:16:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2014 states have (on average 1.951340615690169) internal successors, (3930), 2794 states have internal predecessors, (3930), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:16:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3974 transitions. [2021-11-23 02:16:45,861 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3974 transitions. Word has length 13 [2021-11-23 02:16:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:45,862 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 3974 transitions. [2021-11-23 02:16:45,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3974 transitions. [2021-11-23 02:16:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:16:45,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:45,863 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] [2021-11-23 02:16:45,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:46,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:46,082 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-23 02:16:46,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146986397] [2021-11-23 02:16:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:46,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:46,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:46,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:46,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:16:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:46,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:46,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:46,254 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 [2021-11-23 02:16:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:46,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:46,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:46,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146986397] [2021-11-23 02:16:46,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146986397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:46,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:46,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:16:46,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239470615] [2021-11-23 02:16:46,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:46,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:16:46,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:16:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:16:46,465 INFO L87 Difference]: Start difference. First operand 2809 states and 3974 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:51,470 INFO L93 Difference]: Finished difference Result 4467 states and 6106 transitions. [2021-11-23 02:16:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:16:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 02:16:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:51,494 INFO L225 Difference]: With dead ends: 4467 [2021-11-23 02:16:51,494 INFO L226 Difference]: Without dead ends: 4467 [2021-11-23 02:16:51,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:16:51,496 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 3382 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:51,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 2422 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 02:16:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2021-11-23 02:16:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 2805. [2021-11-23 02:16:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2014 states have (on average 1.9473684210526316) internal successors, (3922), 2790 states have internal predecessors, (3922), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:16:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3966 transitions. [2021-11-23 02:16:51,576 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3966 transitions. Word has length 27 [2021-11-23 02:16:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:51,577 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3966 transitions. [2021-11-23 02:16:51,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3966 transitions. [2021-11-23 02:16:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:16:51,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:51,579 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] [2021-11-23 02:16:51,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:51,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:51,794 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:16:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-23 02:16:51,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:51,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428450527] [2021-11-23 02:16:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:51,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:51,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:51,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:51,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:16:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:51,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:16:51,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:51,986 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 [2021-11-23 02:16:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:52,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:52,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:52,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428450527] [2021-11-23 02:16:52,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428450527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:52,683 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:52,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:16:52,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102303908] [2021-11-23 02:16:52,684 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:52,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:16:52,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:16:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:16:52,685 INFO L87 Difference]: Start difference. First operand 2805 states and 3966 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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) [2021-11-23 02:17:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:07,007 INFO L93 Difference]: Finished difference Result 3769 states and 4989 transitions. [2021-11-23 02:17:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:17:07,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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 27 [2021-11-23 02:17:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:07,029 INFO L225 Difference]: With dead ends: 3769 [2021-11-23 02:17:07,029 INFO L226 Difference]: Without dead ends: 3769 [2021-11-23 02:17:07,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:17:07,030 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 2891 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:07,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2891 Valid, 3614 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3054 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2021-11-23 02:17:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2021-11-23 02:17:07,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 2801. [2021-11-23 02:17:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2014 states have (on average 1.9433962264150944) internal successors, (3914), 2786 states have internal predecessors, (3914), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:17:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3958 transitions. [2021-11-23 02:17:07,133 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3958 transitions. Word has length 27 [2021-11-23 02:17:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:07,133 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3958 transitions. [2021-11-23 02:17:07,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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) [2021-11-23 02:17:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3958 transitions. [2021-11-23 02:17:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 02:17:07,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:07,136 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] [2021-11-23 02:17:07,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-23 02:17:07,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:07,349 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:07,350 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-23 02:17:07,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881975248] [2021-11-23 02:17:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:07,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:07,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:07,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:07,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:17:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:07,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:07,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:07,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:07,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:07,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881975248] [2021-11-23 02:17:07,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881975248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:07,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:07,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:17:07,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535429678] [2021-11-23 02:17:07,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:07,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:17:07,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:17:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:07,802 INFO L87 Difference]: Start difference. First operand 2801 states and 3958 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:07,876 INFO L93 Difference]: Finished difference Result 2789 states and 3938 transitions. [2021-11-23 02:17:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:17:07,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 02:17:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:07,888 INFO L225 Difference]: With dead ends: 2789 [2021-11-23 02:17:07,889 INFO L226 Difference]: Without dead ends: 2789 [2021-11-23 02:17:07,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:17:07,890 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 1683 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 3441 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 [2021-11-23 02:17:07,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 3441 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:17:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-11-23 02:17:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2021-11-23 02:17:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2002 states have (on average 1.945054945054945) internal successors, (3894), 2774 states have internal predecessors, (3894), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:17:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3938 transitions. [2021-11-23 02:17:07,946 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3938 transitions. Word has length 42 [2021-11-23 02:17:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:07,946 INFO L470 AbstractCegarLoop]: Abstraction has 2789 states and 3938 transitions. [2021-11-23 02:17:07,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3938 transitions. [2021-11-23 02:17:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 02:17:07,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:07,948 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] [2021-11-23 02:17:07,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:08,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:08,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-23 02:17:08,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:08,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212124993] [2021-11-23 02:17:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:08,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:08,168 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:08,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:17:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:08,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:08,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:08,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:09,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:09,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212124993] [2021-11-23 02:17:09,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212124993] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:09,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:09,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:17:09,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898037461] [2021-11-23 02:17:09,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:09,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:09,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:09,134 INFO L87 Difference]: Start difference. First operand 2789 states and 3938 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:09,372 INFO L93 Difference]: Finished difference Result 2978 states and 3973 transitions. [2021-11-23 02:17:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-23 02:17:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:09,395 INFO L225 Difference]: With dead ends: 2978 [2021-11-23 02:17:09,395 INFO L226 Difference]: Without dead ends: 2978 [2021-11-23 02:17:09,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:09,396 INFO L933 BasicCegarLoop]: 1793 mSDtfsCounter, 455 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:09,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 3382 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:17:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2021-11-23 02:17:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2605. [2021-11-23 02:17:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 1818 states have (on average 1.9466446644664466) internal successors, (3539), 2590 states have internal predecessors, (3539), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:17:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3583 transitions. [2021-11-23 02:17:09,489 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3583 transitions. Word has length 50 [2021-11-23 02:17:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:09,489 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 3583 transitions. [2021-11-23 02:17:09,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3583 transitions. [2021-11-23 02:17:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 02:17:09,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:09,494 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] [2021-11-23 02:17:09,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:09,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:09,695 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-23 02:17:09,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356610895] [2021-11-23 02:17:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:09,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:09,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:09,698 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:09,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:17:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:10,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:17:10,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:10,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:17:10,058 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 [2021-11-23 02:17:10,682 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:17:10,683 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 [2021-11-23 02:17:10,692 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:17:10,693 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 [2021-11-23 02:17:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:10,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:15,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:15,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356610895] [2021-11-23 02:17:15,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356610895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:15,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:15,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:17:15,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703569913] [2021-11-23 02:17:15,625 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:15,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:17:15,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:17:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 02:17:15,626 INFO L87 Difference]: Start difference. First operand 2605 states and 3583 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:27,962 INFO L93 Difference]: Finished difference Result 4003 states and 5207 transitions. [2021-11-23 02:17:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:17:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-23 02:17:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:27,978 INFO L225 Difference]: With dead ends: 4003 [2021-11-23 02:17:27,978 INFO L226 Difference]: Without dead ends: 4003 [2021-11-23 02:17:27,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-23 02:17:27,979 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 1925 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2690 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:27,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1942 Valid, 3673 Invalid, 5514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2749 Invalid, 0 Unknown, 2690 Unchecked, 12.2s Time] [2021-11-23 02:17:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2021-11-23 02:17:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 2700. [2021-11-23 02:17:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 1945 states have (on average 1.906426735218509) internal successors, (3708), 2682 states have internal predecessors, (3708), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:17:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3758 transitions. [2021-11-23 02:17:28,037 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3758 transitions. Word has length 53 [2021-11-23 02:17:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:28,037 INFO L470 AbstractCegarLoop]: Abstraction has 2700 states and 3758 transitions. [2021-11-23 02:17:28,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3758 transitions. [2021-11-23 02:17:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 02:17:28,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:28,041 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] [2021-11-23 02:17:28,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:28,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:28,259 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-23 02:17:28,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:28,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621406274] [2021-11-23 02:17:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:28,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:28,263 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:28,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:17:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:28,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:28,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:28,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:28,874 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 [2021-11-23 02:17:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:29,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:29,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621406274] [2021-11-23 02:17:29,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621406274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:29,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:29,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:17:29,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838690334] [2021-11-23 02:17:29,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:29,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:17:29,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:17:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:17:29,247 INFO L87 Difference]: Start difference. First operand 2700 states and 3758 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:33,592 INFO L93 Difference]: Finished difference Result 2698 states and 3754 transitions. [2021-11-23 02:17:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:17:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-23 02:17:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:33,610 INFO L225 Difference]: With dead ends: 2698 [2021-11-23 02:17:33,611 INFO L226 Difference]: Without dead ends: 2698 [2021-11-23 02:17:33,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:17:33,612 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 2424 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:33,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2435 Valid, 2112 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 02:17:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-23 02:17:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2021-11-23 02:17:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 1945 states have (on average 1.9043701799485862) internal successors, (3704), 2680 states have internal predecessors, (3704), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:17:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3754 transitions. [2021-11-23 02:17:33,681 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3754 transitions. Word has length 55 [2021-11-23 02:17:33,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:33,683 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 3754 transitions. [2021-11-23 02:17:33,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3754 transitions. [2021-11-23 02:17:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 02:17:33,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:33,689 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] [2021-11-23 02:17:33,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:33,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:33,907 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-23 02:17:33,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:33,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34811912] [2021-11-23 02:17:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:33,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:33,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:33,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:17:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:34,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:17:34,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:34,198 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 [2021-11-23 02:17:34,215 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 [2021-11-23 02:17:34,254 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 [2021-11-23 02:17:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:34,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:34,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:34,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34811912] [2021-11-23 02:17:34,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34811912] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:34,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:34,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:17:34,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510685977] [2021-11-23 02:17:34,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:34,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:17:34,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:17:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:17:34,386 INFO L87 Difference]: Start difference. First operand 2698 states and 3754 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:40,073 INFO L93 Difference]: Finished difference Result 2697 states and 3752 transitions. [2021-11-23 02:17:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:17:40,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-23 02:17:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:40,080 INFO L225 Difference]: With dead ends: 2697 [2021-11-23 02:17:40,080 INFO L226 Difference]: Without dead ends: 2697 [2021-11-23 02:17:40,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:17:40,081 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 4 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:40,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4310 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 02:17:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2021-11-23 02:17:40,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2697. [2021-11-23 02:17:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1945 states have (on average 1.9033419023136247) internal successors, (3702), 2679 states have internal predecessors, (3702), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:17:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 3752 transitions. [2021-11-23 02:17:40,127 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 3752 transitions. Word has length 58 [2021-11-23 02:17:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:40,127 INFO L470 AbstractCegarLoop]: Abstraction has 2697 states and 3752 transitions. [2021-11-23 02:17:40,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:17:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 3752 transitions. [2021-11-23 02:17:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 02:17:40,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:40,130 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] [2021-11-23 02:17:40,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:40,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:40,350 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-23 02:17:40,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:40,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934431393] [2021-11-23 02:17:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:40,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:40,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:40,353 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:40,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:17:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:17:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:40,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:17:40,772 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 [2021-11-23 02:17:40,785 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 [2021-11-23 02:17:40,856 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 [2021-11-23 02:17:40,859 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 [2021-11-23 02:17:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:40,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:41,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:41,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934431393] [2021-11-23 02:17:41,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934431393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:41,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:41,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 02:17:41,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316369880] [2021-11-23 02:17:41,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:41,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:17:41,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:17:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:17:41,197 INFO L87 Difference]: Start difference. First operand 2697 states and 3752 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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) [2021-11-23 02:17:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:57,634 INFO L93 Difference]: Finished difference Result 2696 states and 3750 transitions. [2021-11-23 02:17:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:17:57,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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 58 [2021-11-23 02:17:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:57,640 INFO L225 Difference]: With dead ends: 2696 [2021-11-23 02:17:57,640 INFO L226 Difference]: Without dead ends: 2696 [2021-11-23 02:17:57,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:17:57,641 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 3 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:57,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5115 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2021-11-23 02:17:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-11-23 02:17:57,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2696. [2021-11-23 02:17:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 1943 states have (on average 1.9042717447246527) internal successors, (3700), 2678 states have internal predecessors, (3700), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 17 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:17:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3750 transitions. [2021-11-23 02:17:57,683 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3750 transitions. Word has length 58 [2021-11-23 02:17:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:57,684 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 3750 transitions. [2021-11-23 02:17:57,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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) [2021-11-23 02:17:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3750 transitions. [2021-11-23 02:17:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:17:57,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:57,685 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] [2021-11-23 02:17:57,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:57,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:57,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601854, now seen corresponding path program 1 times [2021-11-23 02:17:57,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:57,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008720968] [2021-11-23 02:17:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:57,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:57,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:57,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:57,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:17:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:58,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:58,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:58,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:58,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:58,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008720968] [2021-11-23 02:17:58,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008720968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:58,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:58,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:17:58,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766548316] [2021-11-23 02:17:58,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:58,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:17:58,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:17:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:17:58,451 INFO L87 Difference]: Start difference. First operand 2696 states and 3750 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-23 02:17:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:58,603 INFO L93 Difference]: Finished difference Result 2706 states and 3767 transitions. [2021-11-23 02:17:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:17:58,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 66 [2021-11-23 02:17:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:58,612 INFO L225 Difference]: With dead ends: 2706 [2021-11-23 02:17:58,612 INFO L226 Difference]: Without dead ends: 2706 [2021-11-23 02:17:58,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:17:58,613 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 9 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:58,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5039 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-11-23 02:17:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2706. [2021-11-23 02:17:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 1951 states have (on average 1.902614044079959) internal successors, (3712), 2687 states have internal predecessors, (3712), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 17 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-23 02:17:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3767 transitions. [2021-11-23 02:17:58,665 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3767 transitions. Word has length 66 [2021-11-23 02:17:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:58,666 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 3767 transitions. [2021-11-23 02:17:58,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-23 02:17:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3767 transitions. [2021-11-23 02:17:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:17:58,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:58,668 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] [2021-11-23 02:17:58,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:58,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:17:58,881 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:17:58,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:58,882 INFO L85 PathProgramCache]: Analyzing trace with hash 67067806, now seen corresponding path program 1 times [2021-11-23 02:17:58,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:17:58,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814981808] [2021-11-23 02:17:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:58,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:17:58,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:17:58,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:17:58,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 02:17:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:59,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:17:59,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:59,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:59,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:17:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814981808] [2021-11-23 02:17:59,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814981808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [162915398] [2021-11-23 02:17:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:59,525 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:17:59,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:17:59,529 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:17:59,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-23 02:17:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:59,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:17:59,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:00,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:00,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [162915398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:00,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985293014] [2021-11-23 02:18:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:18:00,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:18:00,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:18:00,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:18:00,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-23 02:18:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:00,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:18:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:00,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:00,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985293014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:00,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:18:00,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-23 02:18:00,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399552544] [2021-11-23 02:18:00,734 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:18:00,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:18:00,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:18:00,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:18:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:18:00,736 INFO L87 Difference]: Start difference. First operand 2706 states and 3767 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2021-11-23 02:18:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:01,381 INFO L93 Difference]: Finished difference Result 2720 states and 3788 transitions. [2021-11-23 02:18:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:18:01,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 68 [2021-11-23 02:18:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:01,389 INFO L225 Difference]: With dead ends: 2720 [2021-11-23 02:18:01,390 INFO L226 Difference]: Without dead ends: 2714 [2021-11-23 02:18:01,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:18:01,391 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 33 mSDsluCounter, 6718 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8401 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:01,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8401 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:18:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-11-23 02:18:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2712. [2021-11-23 02:18:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 1957 states have (on average 1.9003576903423607) internal successors, (3719), 2693 states have internal predecessors, (3719), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 17 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-23 02:18:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 3774 transitions. [2021-11-23 02:18:01,438 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 3774 transitions. Word has length 68 [2021-11-23 02:18:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:01,439 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 3774 transitions. [2021-11-23 02:18:01,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2021-11-23 02:18:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 3774 transitions. [2021-11-23 02:18:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:18:01,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:01,440 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] [2021-11-23 02:18:01,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-23 02:18:01,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-23 02:18:01,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-23 02:18:02,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:18:02,094 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:18:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1089755102, now seen corresponding path program 2 times [2021-11-23 02:18:02,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:18:02,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776016486] [2021-11-23 02:18:02,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:18:02,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:18:02,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:18:02,096 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:18:02,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 02:18:02,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:18:02,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:18:02,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:18:02,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:02,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:03,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:18:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776016486] [2021-11-23 02:18:03,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776016486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093213436] [2021-11-23 02:18:03,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:18:03,592 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:18:03,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:18:03,593 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:18:03,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-23 02:18:04,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:18:04,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:18:04,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:18:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:04,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:05,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1093213436] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:05,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538521400] [2021-11-23 02:18:05,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:18:05,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:18:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:18:05,248 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:18:05,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 02:18:12,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:18:12,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:18:12,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:18:12,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:13,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:13,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538521400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:13,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:18:13,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2021-11-23 02:18:13,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536204449] [2021-11-23 02:18:13,252 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:18:13,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 02:18:13,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:18:13,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 02:18:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:18:13,254 INFO L87 Difference]: Start difference. First operand 2712 states and 3774 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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) [2021-11-23 02:18:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:15,162 INFO L93 Difference]: Finished difference Result 2738 states and 3840 transitions. [2021-11-23 02:18:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 02:18:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 72 [2021-11-23 02:18:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:15,170 INFO L225 Difference]: With dead ends: 2738 [2021-11-23 02:18:15,170 INFO L226 Difference]: Without dead ends: 2732 [2021-11-23 02:18:15,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=387, Invalid=735, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 02:18:15,172 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 89 mSDsluCounter, 13440 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 15126 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:15,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 15126 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 02:18:15,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-23 02:18:15,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2724. [2021-11-23 02:18:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1969 states have (on average 1.8963941086846114) internal successors, (3734), 2705 states have internal predecessors, (3734), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 17 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-23 02:18:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3789 transitions. [2021-11-23 02:18:15,216 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3789 transitions. Word has length 72 [2021-11-23 02:18:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:15,217 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3789 transitions. [2021-11-23 02:18:15,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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) [2021-11-23 02:18:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3789 transitions. [2021-11-23 02:18:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:18:15,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:15,218 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] [2021-11-23 02:18:15,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 02:18:15,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-23 02:18:15,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-23 02:18:15,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:18:15,845 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-11-23 02:18:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash -204740514, now seen corresponding path program 3 times [2021-11-23 02:18:15,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:18:15,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163189074] [2021-11-23 02:18:15,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:18:15,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:18:15,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:18:15,848 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:18:15,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 02:18:16,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 02:18:16,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:18:16,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:18:16,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:17,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:18,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:18:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163189074] [2021-11-23 02:18:18,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163189074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1234283269] [2021-11-23 02:18:18,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:18:18,607 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:18:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:18:18,613 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:18:18,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-23 02:18:25,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 02:18:25,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:18:25,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:18:25,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:25,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:18:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:25,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1234283269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:18:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101509725] [2021-11-23 02:18:25,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:18:25,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:18:25,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:18:25,899 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:18:25,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02416f08-7c82-4111-8f47-cfe80331b363/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process