./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:06,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:06,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:06,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:06,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:06,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:06,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:06,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:06,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:06,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:06,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:06,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:06,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:06,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:06,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:06,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:06,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:06,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:06,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:06,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:06,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:06,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:06,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:06,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:06,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:06,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:06,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:06,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:06,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:06,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:06,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:06,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:06,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:06,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:06,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:06,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:06,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:06,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:06,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:06,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:06,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:06,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:45:06,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:06,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:06,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:06,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:06,902 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:06,903 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:06,903 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:06,903 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:45:06,903 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:06,903 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:06,905 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:45:06,905 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:45:06,905 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:06,906 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:45:06,906 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:45:06,906 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:45:06,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:06,907 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:45:06,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:45:06,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:45:06,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:06,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:06,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:06,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:06,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:06,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:45:06,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:06,910 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:06,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:06,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:06,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:06,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:06,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:06,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:06,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:06,912 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:45:06,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:45:06,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:06,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:06,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:06,913 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2021-11-19 14:45:07,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:07,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:07,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:07,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:07,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:07,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-19 14:45:07,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/3f45cd26f/8c6e947e1bcf48918f229fee52ab5ce3/FLAG85a4428d7 [2021-11-19 14:45:07,775 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:07,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-19 14:45:07,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/3f45cd26f/8c6e947e1bcf48918f229fee52ab5ce3/FLAG85a4428d7 [2021-11-19 14:45:08,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/3f45cd26f/8c6e947e1bcf48918f229fee52ab5ce3 [2021-11-19 14:45:08,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:08,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:08,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:08,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:08,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:08,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:08" (1/1) ... [2021-11-19 14:45:08,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0a457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:08, skipping insertion in model container [2021-11-19 14:45:08,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:08" (1/1) ... [2021-11-19 14:45:08,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:08,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:08,382 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2021-11-19 14:45:08,412 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:08,427 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:45:08,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2aaa7dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:08, skipping insertion in model container [2021-11-19 14:45:08,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:08,435 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:45:08,438 INFO L158 Benchmark]: Toolchain (without parser) took 307.01ms. Allocated memory is still 94.4MB. Free memory was 53.8MB in the beginning and 70.1MB in the end (delta: -16.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:45:08,439 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:45:08,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.81ms. Allocated memory is still 94.4MB. Free memory was 53.6MB in the beginning and 70.1MB in the end (delta: -16.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:45:08,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.81ms. Allocated memory is still 94.4MB. Free memory was 53.6MB in the beginning and 70.1MB in the end (delta: -16.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:10,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:10,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:10,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:10,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:10,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:10,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:10,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:10,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:10,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:10,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:10,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:10,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:10,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:10,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:10,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:10,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:10,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:10,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:10,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:10,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:10,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:10,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:10,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:10,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:10,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:10,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:10,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:10,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:10,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:10,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:10,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:10,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:10,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:10,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:10,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:10,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:10,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:10,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:10,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:10,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:10,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:45:10,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:10,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:10,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:10,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:10,849 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:10,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:10,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:10,849 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:10,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:10,850 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:10,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:10,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:45:10,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:45:10,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:10,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:10,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:10,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:10,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:10,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:45:10,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:45:10,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:45:10,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:10,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:10,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:10,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:10,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:45:10,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:10,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:10,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:10,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:10,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:10,857 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:45:10,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:10,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:10,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:10,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:10,858 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2021-11-19 14:45:11,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:11,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:11,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:11,287 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:11,288 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:11,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-19 14:45:11,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/6d46e0429/71a2ffd7acf643208f49c1ced706dba6/FLAG4e7c79776 [2021-11-19 14:45:11,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:11,829 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-11-19 14:45:11,841 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/6d46e0429/71a2ffd7acf643208f49c1ced706dba6/FLAG4e7c79776 [2021-11-19 14:45:12,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/data/6d46e0429/71a2ffd7acf643208f49c1ced706dba6 [2021-11-19 14:45:12,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:12,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:12,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:12,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:12,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:12,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9ba75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12, skipping insertion in model container [2021-11-19 14:45:12,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:12,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:12,393 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2021-11-19 14:45:12,405 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:12,416 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:45:12,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:12,476 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2021-11-19 14:45:12,495 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:12,510 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:45:12,558 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_5d499276-b5c7-4a18-a56a-984b700e2bfc/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2021-11-19 14:45:12,573 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:12,593 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:45:12,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12 WrapperNode [2021-11-19 14:45:12,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:12,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:12,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:45:12,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:45:12,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,678 INFO L137 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 225 [2021-11-19 14:45:12,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:12,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:45:12,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:45:12,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:45:12,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:45:12,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:45:12,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:45:12,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:45:12,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (1/1) ... [2021-11-19 14:45:12,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:45:12,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:45:12,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:45:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:45:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:45:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:45:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:45:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 14:45:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 14:45:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 14:45:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 14:45:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 14:45:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 14:45:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 14:45:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 14:45:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:45:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:45:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:45:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:45:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:45:12,835 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 14:45:12,971 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:45:12,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:45:13,690 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:45:13,795 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:45:13,796 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 14:45:13,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:13 BoogieIcfgContainer [2021-11-19 14:45:13,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:45:13,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:45:13,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:45:13,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:45:13,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:45:12" (1/3) ... [2021-11-19 14:45:13,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3b7806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:13, skipping insertion in model container [2021-11-19 14:45:13,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:12" (2/3) ... [2021-11-19 14:45:13,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3b7806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:13, skipping insertion in model container [2021-11-19 14:45:13,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:13" (3/3) ... [2021-11-19 14:45:13,806 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2021-11-19 14:45:13,811 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:45:13,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:45:13,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:45:13,812 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:45:13,852 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,852 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,853 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,853 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,853 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,854 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,855 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,855 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,857 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,858 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,858 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,858 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,893 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,893 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,894 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,894 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,904 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,904 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,905 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,905 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,905 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,905 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,905 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,906 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,906 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,906 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,906 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,906 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,906 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,907 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,907 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,907 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,907 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,907 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,908 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,908 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,908 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,908 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,908 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,909 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,909 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,909 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,909 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,909 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,910 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,910 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,910 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,910 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,910 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,910 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,911 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,911 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,914 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,914 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,914 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,915 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,915 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,915 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,915 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,916 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,917 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,917 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:45:13,922 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 14:45:13,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:45:13,977 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:45:13,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:45:14,002 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:45:14,027 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 309 transitions, 642 flow [2021-11-19 14:45:14,033 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 309 transitions, 642 flow [2021-11-19 14:45:14,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 292 places, 309 transitions, 642 flow [2021-11-19 14:45:14,223 INFO L129 PetriNetUnfolder]: 27/306 cut-off events. [2021-11-19 14:45:14,223 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 14:45:14,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 306 events. 27/306 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 239. Up to 3 conditions per place. [2021-11-19 14:45:14,245 INFO L116 LiptonReduction]: Number of co-enabled transitions 2634 [2021-11-19 14:46:00,184 INFO L131 LiptonReduction]: Checked pairs total: 4320 [2021-11-19 14:46:00,184 INFO L133 LiptonReduction]: Total number of compositions: 338 [2021-11-19 14:46:00,194 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 39 transitions, 102 flow [2021-11-19 14:46:00,244 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:46:00,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:00,272 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] [2021-11-19 14:46:00,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1801605574, now seen corresponding path program 1 times [2021-11-19 14:46:00,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:00,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334928601] [2021-11-19 14:46:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:00,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:00,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:00,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:00,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:46:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:00,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:00,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:46:00,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:46:00,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:00,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334928601] [2021-11-19 14:46:00,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334928601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:00,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:00,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-11-19 14:46:00,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403424894] [2021-11-19 14:46:00,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:00,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:46:00,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:46:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:46:00,819 INFO L87 Difference]: Start difference. First operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:01,689 INFO L93 Difference]: Finished difference Result 314 states and 1148 transitions. [2021-11-19 14:46:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:01,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-19 14:46:01,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:01,708 INFO L225 Difference]: With dead ends: 314 [2021-11-19 14:46:01,708 INFO L226 Difference]: Without dead ends: 314 [2021-11-19 14:46:01,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:46:01,713 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:01,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 31 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:46:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-19 14:46:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-19 14:46:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.6677316293929714) internal successors, (1148), 313 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1148 transitions. [2021-11-19 14:46:01,782 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1148 transitions. Word has length 22 [2021-11-19 14:46:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:01,783 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1148 transitions. [2021-11-19 14:46:01,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1148 transitions. [2021-11-19 14:46:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:46:01,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:01,787 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] [2021-11-19 14:46:01,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:02,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:02,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:02,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:02,002 INFO L85 PathProgramCache]: Analyzing trace with hash 510493109, now seen corresponding path program 1 times [2021-11-19 14:46:02,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:02,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621210835] [2021-11-19 14:46:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:02,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:02,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:02,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:02,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:46:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:02,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:46:02,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:46:02,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:46:02,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:02,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621210835] [2021-11-19 14:46:02,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621210835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:02,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:02,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 7 [2021-11-19 14:46:02,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61890154] [2021-11-19 14:46:02,424 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:02,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:46:02,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:46:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:46:02,427 INFO L87 Difference]: Start difference. First operand 314 states and 1148 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:03,418 INFO L93 Difference]: Finished difference Result 316 states and 1150 transitions. [2021-11-19 14:46:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:46:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-19 14:46:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:03,442 INFO L225 Difference]: With dead ends: 316 [2021-11-19 14:46:03,442 INFO L226 Difference]: Without dead ends: 316 [2021-11-19 14:46:03,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:03,444 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:03,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 31 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:46:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-19 14:46:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-11-19 14:46:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.6507936507936507) internal successors, (1150), 315 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1150 transitions. [2021-11-19 14:46:03,471 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1150 transitions. Word has length 23 [2021-11-19 14:46:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:03,472 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1150 transitions. [2021-11-19 14:46:03,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1150 transitions. [2021-11-19 14:46:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 14:46:03,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:03,474 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] [2021-11-19 14:46:03,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:03,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:03,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1853228484, now seen corresponding path program 1 times [2021-11-19 14:46:03,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:03,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51634710] [2021-11-19 14:46:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:03,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:03,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:03,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:46:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:03,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:46:03,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:04,445 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 14:46:04,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 126 treesize of output 252 [2021-11-19 14:46:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:05,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:05,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:05,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51634710] [2021-11-19 14:46:05,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51634710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:05,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:05,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:46:05,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802062144] [2021-11-19 14:46:05,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:05,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:05,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:05,684 INFO L87 Difference]: Start difference. First operand 316 states and 1150 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:05,797 INFO L93 Difference]: Finished difference Result 413 states and 1507 transitions. [2021-11-19 14:46:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-19 14:46:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:05,804 INFO L225 Difference]: With dead ends: 413 [2021-11-19 14:46:05,804 INFO L226 Difference]: Without dead ends: 406 [2021-11-19 14:46:05,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:05,809 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:05,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-11-19 14:46:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-19 14:46:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2021-11-19 14:46:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.68922305764411) internal successors, (1472), 399 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1472 transitions. [2021-11-19 14:46:05,857 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1472 transitions. Word has length 25 [2021-11-19 14:46:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:05,864 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1472 transitions. [2021-11-19 14:46:05,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1472 transitions. [2021-11-19 14:46:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:46:05,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:05,869 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] [2021-11-19 14:46:05,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:46:06,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:06,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1977534372, now seen corresponding path program 1 times [2021-11-19 14:46:06,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:06,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043514390] [2021-11-19 14:46:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:06,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:06,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:06,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:06,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:46:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:06,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:06,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:06,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043514390] [2021-11-19 14:46:06,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043514390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:06,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:06,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:46:06,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961479414] [2021-11-19 14:46:06,560 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:06,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:06,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:06,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:06,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:06,561 INFO L87 Difference]: Start difference. First operand 400 states and 1472 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:08,444 INFO L93 Difference]: Finished difference Result 642 states and 2345 transitions. [2021-11-19 14:46:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:46:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-19 14:46:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:08,452 INFO L225 Difference]: With dead ends: 642 [2021-11-19 14:46:08,452 INFO L226 Difference]: Without dead ends: 634 [2021-11-19 14:46:08,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:46:08,454 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 122 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:08,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 70 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:46:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-19 14:46:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 442. [2021-11-19 14:46:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.675736961451247) internal successors, (1621), 441 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1621 transitions. [2021-11-19 14:46:08,482 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1621 transitions. Word has length 26 [2021-11-19 14:46:08,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:08,482 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1621 transitions. [2021-11-19 14:46:08,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1621 transitions. [2021-11-19 14:46:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:46:08,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:08,485 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] [2021-11-19 14:46:08,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:08,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:08,697 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:08,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1367117398, now seen corresponding path program 2 times [2021-11-19 14:46:08,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:08,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265367637] [2021-11-19 14:46:08,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:46:08,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:08,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:08,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:46:08,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:46:08,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:08,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:46:08,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:09,471 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 14:46:09,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 126 treesize of output 252 [2021-11-19 14:46:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:46:10,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:46:10,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:10,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265367637] [2021-11-19 14:46:10,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265367637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:10,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:10,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:46:10,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712529338] [2021-11-19 14:46:10,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:10,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:10,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:10,528 INFO L87 Difference]: Start difference. First operand 442 states and 1621 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:10,618 INFO L93 Difference]: Finished difference Result 507 states and 1857 transitions. [2021-11-19 14:46:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:10,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-19 14:46:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:10,625 INFO L225 Difference]: With dead ends: 507 [2021-11-19 14:46:10,625 INFO L226 Difference]: Without dead ends: 492 [2021-11-19 14:46:10,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:10,626 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:10,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-11-19 14:46:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-19 14:46:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 422. [2021-11-19 14:46:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.676959619952494) internal successors, (1548), 421 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1548 transitions. [2021-11-19 14:46:10,648 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1548 transitions. Word has length 26 [2021-11-19 14:46:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:10,648 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1548 transitions. [2021-11-19 14:46:10,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:10,649 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1548 transitions. [2021-11-19 14:46:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:46:10,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:10,651 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] [2021-11-19 14:46:10,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:10,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:10,865 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash 796647934, now seen corresponding path program 1 times [2021-11-19 14:46:10,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:10,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579763027] [2021-11-19 14:46:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:10,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:10,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:10,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:46:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:10,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:10,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:11,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:11,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:11,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579763027] [2021-11-19 14:46:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579763027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:11,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:11,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:46:11,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472728618] [2021-11-19 14:46:11,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:11,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:46:11,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:46:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:11,159 INFO L87 Difference]: Start difference. First operand 422 states and 1548 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:12,094 INFO L93 Difference]: Finished difference Result 746 states and 2643 transitions. [2021-11-19 14:46:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:46:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-11-19 14:46:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:12,101 INFO L225 Difference]: With dead ends: 746 [2021-11-19 14:46:12,101 INFO L226 Difference]: Without dead ends: 578 [2021-11-19 14:46:12,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:12,102 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 107 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:12,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 36 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:46:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-19 14:46:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 504. [2021-11-19 14:46:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.497017892644135) internal successors, (1759), 503 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1759 transitions. [2021-11-19 14:46:12,126 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1759 transitions. Word has length 27 [2021-11-19 14:46:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:12,127 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1759 transitions. [2021-11-19 14:46:12,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:12,127 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1759 transitions. [2021-11-19 14:46:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:46:12,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:12,130 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] [2021-11-19 14:46:12,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:12,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:12,342 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2085079019, now seen corresponding path program 1 times [2021-11-19 14:46:12,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:12,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521140339] [2021-11-19 14:46:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:12,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:12,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:12,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:12,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:46:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:12,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:12,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:12,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:12,776 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:12,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521140339] [2021-11-19 14:46:12,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521140339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:12,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:12,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:46:12,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610999882] [2021-11-19 14:46:12,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:12,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:12,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:12,777 INFO L87 Difference]: Start difference. First operand 504 states and 1759 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:14,254 INFO L93 Difference]: Finished difference Result 1050 states and 3667 transitions. [2021-11-19 14:46:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:46:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 14:46:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:14,266 INFO L225 Difference]: With dead ends: 1050 [2021-11-19 14:46:14,266 INFO L226 Difference]: Without dead ends: 982 [2021-11-19 14:46:14,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:46:14,267 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 251 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:14,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 26 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:46:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-19 14:46:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 448. [2021-11-19 14:46:14,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.563758389261745) internal successors, (1593), 447 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1593 transitions. [2021-11-19 14:46:14,294 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1593 transitions. Word has length 28 [2021-11-19 14:46:14,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:14,295 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1593 transitions. [2021-11-19 14:46:14,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1593 transitions. [2021-11-19 14:46:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:46:14,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:14,297 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] [2021-11-19 14:46:14,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:14,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:14,513 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:14,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1106726945, now seen corresponding path program 2 times [2021-11-19 14:46:14,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:14,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144684035] [2021-11-19 14:46:14,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:46:14,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:14,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:14,515 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:14,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:46:14,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:14,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:14,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:14,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:14,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:15,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:15,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144684035] [2021-11-19 14:46:15,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144684035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:15,106 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:15,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:46:15,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555271027] [2021-11-19 14:46:15,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:15,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:15,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:15,108 INFO L87 Difference]: Start difference. First operand 448 states and 1593 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:16,187 INFO L93 Difference]: Finished difference Result 1426 states and 5202 transitions. [2021-11-19 14:46:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:46:16,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 14:46:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:16,202 INFO L225 Difference]: With dead ends: 1426 [2021-11-19 14:46:16,202 INFO L226 Difference]: Without dead ends: 1372 [2021-11-19 14:46:16,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:46:16,204 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 204 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:16,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 26 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:46:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-11-19 14:46:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 556. [2021-11-19 14:46:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.609009009009009) internal successors, (2003), 555 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 2003 transitions. [2021-11-19 14:46:16,240 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 2003 transitions. Word has length 28 [2021-11-19 14:46:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:16,240 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 2003 transitions. [2021-11-19 14:46:16,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 2003 transitions. [2021-11-19 14:46:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:46:16,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:16,243 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] [2021-11-19 14:46:16,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:16,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:16,457 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash -940166033, now seen corresponding path program 3 times [2021-11-19 14:46:16,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:16,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763087621] [2021-11-19 14:46:16,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:46:16,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:16,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:16,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:46:16,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:46:16,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:16,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:16,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:17,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:17,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763087621] [2021-11-19 14:46:17,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763087621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:17,050 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:17,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:46:17,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820490347] [2021-11-19 14:46:17,050 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:17,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:17,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:17,051 INFO L87 Difference]: Start difference. First operand 556 states and 2003 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:18,465 INFO L93 Difference]: Finished difference Result 1442 states and 5176 transitions. [2021-11-19 14:46:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:46:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 14:46:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:18,480 INFO L225 Difference]: With dead ends: 1442 [2021-11-19 14:46:18,480 INFO L226 Difference]: Without dead ends: 1410 [2021-11-19 14:46:18,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:46:18,481 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 238 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:18,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 29 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:46:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-19 14:46:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 456. [2021-11-19 14:46:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 3.556043956043956) internal successors, (1618), 455 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1618 transitions. [2021-11-19 14:46:18,513 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1618 transitions. Word has length 28 [2021-11-19 14:46:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:18,513 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1618 transitions. [2021-11-19 14:46:18,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1618 transitions. [2021-11-19 14:46:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:46:18,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:18,516 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] [2021-11-19 14:46:18,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:18,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:18,734 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1810411774, now seen corresponding path program 1 times [2021-11-19 14:46:18,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:18,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56934240] [2021-11-19 14:46:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:18,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:18,736 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:18,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:46:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:18,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:46:18,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:46:19,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:46:19,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:19,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56934240] [2021-11-19 14:46:19,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56934240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:19,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710654488] [2021-11-19 14:46:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:19,382 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:19,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:19,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:19,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:46:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:19,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:46:19,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:19,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:20,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710654488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:20,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115215351] [2021-11-19 14:46:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:20,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:46:20,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:20,082 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:46:20,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 14:46:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:20,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:46:20,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:20,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:20,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115215351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:20,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:46:20,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 7, 7] total 28 [2021-11-19 14:46:20,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376905360] [2021-11-19 14:46:20,603 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:46:20,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 14:46:20,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 14:46:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:46:20,605 INFO L87 Difference]: Start difference. First operand 456 states and 1618 transitions. Second operand has 28 states, 28 states have (on average 4.0) internal successors, (112), 28 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:33,265 INFO L93 Difference]: Finished difference Result 1928 states and 6842 transitions. [2021-11-19 14:46:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-19 14:46:33,266 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.0) internal successors, (112), 28 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 14:46:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:33,284 INFO L225 Difference]: With dead ends: 1928 [2021-11-19 14:46:33,284 INFO L226 Difference]: Without dead ends: 1829 [2021-11-19 14:46:33,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1630, Invalid=6560, Unknown=0, NotChecked=0, Total=8190 [2021-11-19 14:46:33,288 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 750 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:33,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 157 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-19 14:46:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2021-11-19 14:46:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 689. [2021-11-19 14:46:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 3.8517441860465116) internal successors, (2650), 688 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2650 transitions. [2021-11-19 14:46:33,333 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2650 transitions. Word has length 28 [2021-11-19 14:46:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:33,333 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 2650 transitions. [2021-11-19 14:46:33,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.0) internal successors, (112), 28 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2650 transitions. [2021-11-19 14:46:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:46:33,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:33,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:33,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:33,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:33,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:33,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:46:33,950 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash -302978431, now seen corresponding path program 4 times [2021-11-19 14:46:33,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:33,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682140223] [2021-11-19 14:46:33,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:46:33,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:33,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:33,952 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:33,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:46:34,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:46:34,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:34,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:34,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:34,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:34,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:34,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682140223] [2021-11-19 14:46:34,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682140223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:34,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:34,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:46:34,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054035839] [2021-11-19 14:46:34,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:34,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:34,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:34,355 INFO L87 Difference]: Start difference. First operand 689 states and 2650 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:35,510 INFO L93 Difference]: Finished difference Result 1517 states and 5853 transitions. [2021-11-19 14:46:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:46:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:46:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:35,523 INFO L225 Difference]: With dead ends: 1517 [2021-11-19 14:46:35,523 INFO L226 Difference]: Without dead ends: 1489 [2021-11-19 14:46:35,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:46:35,525 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 180 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:35,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 37 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:46:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-11-19 14:46:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 821. [2021-11-19 14:46:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 3.8780487804878048) internal successors, (3180), 820 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 3180 transitions. [2021-11-19 14:46:35,567 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 3180 transitions. Word has length 31 [2021-11-19 14:46:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:35,567 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 3180 transitions. [2021-11-19 14:46:35,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 3180 transitions. [2021-11-19 14:46:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:46:35,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:35,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:35,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-19 14:46:35,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:35,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:35,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1945095887, now seen corresponding path program 5 times [2021-11-19 14:46:35,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:35,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617283152] [2021-11-19 14:46:35,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:46:35,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:35,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:35,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:35,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:46:35,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:35,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:35,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:46:35,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:36,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:36,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:36,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617283152] [2021-11-19 14:46:36,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617283152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:36,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461178633] [2021-11-19 14:46:36,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:46:36,426 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:36,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:36,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:36,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 14:46:39,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:39,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:39,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:46:39,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:39,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:40,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1461178633] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:40,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893216641] [2021-11-19 14:46:40,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:46:40,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:46:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:40,194 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:46:40,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 14:46:44,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:44,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:44,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:44,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:44,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:44,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893216641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:44,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:46:44,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 6, 6, 6] total 26 [2021-11-19 14:46:44,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660338796] [2021-11-19 14:46:44,569 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:44,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:46:44,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:46:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:46:44,570 INFO L87 Difference]: Start difference. First operand 821 states and 3180 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:45,954 INFO L93 Difference]: Finished difference Result 1399 states and 5355 transitions. [2021-11-19 14:46:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:46:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:46:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:45,968 INFO L225 Difference]: With dead ends: 1399 [2021-11-19 14:46:45,969 INFO L226 Difference]: Without dead ends: 1361 [2021-11-19 14:46:45,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:46:45,971 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 123 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:45,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 34 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:46:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-11-19 14:46:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 625. [2021-11-19 14:46:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 3.7884615384615383) internal successors, (2364), 624 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 2364 transitions. [2021-11-19 14:46:46,003 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 2364 transitions. Word has length 31 [2021-11-19 14:46:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:46,003 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 2364 transitions. [2021-11-19 14:46:46,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 2364 transitions. [2021-11-19 14:46:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:46:46,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:46,008 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:46,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:46,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:46,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-19 14:46:46,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:46,626 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -880275703, now seen corresponding path program 6 times [2021-11-19 14:46:46,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:46,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482375765] [2021-11-19 14:46:46,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:46:46,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:46,628 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:46,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:46:46,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:46:46,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:46,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:46:46,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:46:47,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:46:47,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:47,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482375765] [2021-11-19 14:46:47,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482375765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:47,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1207277769] [2021-11-19 14:46:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:46:47,184 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:47,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:47,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:46:47,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:46:47,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:47,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:46:47,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:46:47,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:46:47,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1207277769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:47,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280899932] [2021-11-19 14:46:47,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:46:47,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:46:47,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:47,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:46:47,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 14:46:47,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:46:47,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:47,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:47,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:48,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:48,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280899932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:48,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:46:48,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 18 [2021-11-19 14:46:48,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685893791] [2021-11-19 14:46:48,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:48,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:46:48,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:46:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:46:48,162 INFO L87 Difference]: Start difference. First operand 625 states and 2364 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:49,122 INFO L93 Difference]: Finished difference Result 703 states and 2750 transitions. [2021-11-19 14:46:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:46:49,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:46:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:49,128 INFO L225 Difference]: With dead ends: 703 [2021-11-19 14:46:49,128 INFO L226 Difference]: Without dead ends: 679 [2021-11-19 14:46:49,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:46:49,129 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:49,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 34 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:46:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-19 14:46:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 551. [2021-11-19 14:46:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 3.9272727272727272) internal successors, (2160), 550 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 2160 transitions. [2021-11-19 14:46:49,149 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 2160 transitions. Word has length 31 [2021-11-19 14:46:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:49,149 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 2160 transitions. [2021-11-19 14:46:49,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 2160 transitions. [2021-11-19 14:46:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:46:49,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:49,153 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:49,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 14:46:49,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-19 14:46:49,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 14:46:49,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:49,756 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:46:49,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:49,756 INFO L85 PathProgramCache]: Analyzing trace with hash -717614216, now seen corresponding path program 2 times [2021-11-19 14:46:49,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:49,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193694996] [2021-11-19 14:46:49,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:46:49,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:49,762 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:49,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:46:49,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:49,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:49,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:46:49,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 14:46:50,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 14:46:50,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:50,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193694996] [2021-11-19 14:46:50,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193694996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:50,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080188070] [2021-11-19 14:46:50,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:46:50,352 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:50,354 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:50,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 14:46:50,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:50,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:50,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:46:50,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:46:51,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:46:51,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080188070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:51,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877558080] [2021-11-19 14:46:51,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:46:51,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:46:51,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:51,288 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:46:51,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 14:46:51,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:46:51,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:46:51,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:46:51,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:51,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:46:51,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877558080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:51,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:46:51,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 6] total 27 [2021-11-19 14:46:51,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404573969] [2021-11-19 14:46:51,842 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:46:51,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-19 14:46:51,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:51,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-19 14:46:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:46:51,844 INFO L87 Difference]: Start difference. First operand 551 states and 2160 transitions. Second operand has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:59,877 INFO L93 Difference]: Finished difference Result 2569 states and 9413 transitions. [2021-11-19 14:46:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-19 14:46:59,879 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:46:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:59,900 INFO L225 Difference]: With dead ends: 2569 [2021-11-19 14:46:59,900 INFO L226 Difference]: Without dead ends: 2477 [2021-11-19 14:46:59,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1407, Invalid=4599, Unknown=0, NotChecked=0, Total=6006 [2021-11-19 14:46:59,903 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1079 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:59,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 144 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-19 14:46:59,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-11-19 14:46:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 921. [2021-11-19 14:46:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 3.8021739130434784) internal successors, (3498), 920 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 3498 transitions. [2021-11-19 14:46:59,983 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 3498 transitions. Word has length 31 [2021-11-19 14:46:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:59,984 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 3498 transitions. [2021-11-19 14:46:59,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:46:59,984 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 3498 transitions. [2021-11-19 14:46:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 14:46:59,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:59,988 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:00,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:00,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:00,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-19 14:47:00,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:00,605 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:47:00,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:00,605 INFO L85 PathProgramCache]: Analyzing trace with hash -816131491, now seen corresponding path program 1 times [2021-11-19 14:47:00,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:00,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911325562] [2021-11-19 14:47:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:00,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:00,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:00,607 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:00,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d499276-b5c7-4a18-a56a-984b700e2bfc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:47:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:04,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-19 14:47:04,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:04,331 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 21 treesize of output 19 [2021-11-19 14:47:04,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:47:04,683 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:47:04,683 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 16 treesize of output 16 [2021-11-19 14:47:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:47:04,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:47:04,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:47:04,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:47:05,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:47:05,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 322 treesize of output 134 [2021-11-19 14:47:49,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2021-11-19 14:49:20,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:49:20,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:49:20,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:49:20,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:20,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:49:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:22,452 INFO L354 Elim1Store]: treesize reduction 2707, result has 9.3 percent of original size [2021-11-19 14:49:22,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 166 treesize of output 338 [2021-11-19 14:56:57,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:56:57,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:57,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:56:59,982 INFO L354 Elim1Store]: treesize reduction 2256, result has 9.9 percent of original size [2021-11-19 14:56:59,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 40 disjoint index pairs (out of 276 index pairs), introduced 20 new quantified variables, introduced 260 case distinctions, treesize of input 762 treesize of output 766