./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/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_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs --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 2a258ea6aa778194d56c65a47722c4c20ebabb7c ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/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_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs --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 2a258ea6aa778194d56c65a47722c4c20ebabb7c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:08:04,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:04,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:04,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:04,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:04,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:04,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:04,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:04,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:04,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:04,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:04,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:04,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:04,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:04,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:04,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:04,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:04,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:04,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:04,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:04,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:04,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:04,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:04,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:04,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:04,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:04,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:04,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:04,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:04,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:04,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:04,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:04,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:04,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:04,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:04,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:04,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:04,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:04,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:04,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:04,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:04,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:08:04,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:04,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:04,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:04,848 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:04,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:04,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:04,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:08:04,849 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:04,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:04,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:08:04,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:08:04,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:04,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:08:04,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:08:04,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:08:04,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:04,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:04,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:08:04,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:04,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:04,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:08:04,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:04,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:08:04,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:04,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:04,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:08:04,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:04,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:08:04,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:04,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:04,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:04,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:04,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:04,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:08:04,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:08:04,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:08:04,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:08:04,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:04,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:04,860 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_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a258ea6aa778194d56c65a47722c4c20ebabb7c [2021-10-16 02:08:05,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:05,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:05,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:05,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:05,163 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:05,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-10-16 02:08:05,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/7c074207d/b9ac7ebb30eb490ead24181b54c8b966/FLAG739e6f1e5 [2021-10-16 02:08:05,765 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:05,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-10-16 02:08:05,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/7c074207d/b9ac7ebb30eb490ead24181b54c8b966/FLAG739e6f1e5 [2021-10-16 02:08:06,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/7c074207d/b9ac7ebb30eb490ead24181b54c8b966 [2021-10-16 02:08:06,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:06,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:06,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:06,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:06,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:06,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:06" (1/1) ... [2021-10-16 02:08:06,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6ebdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:06, skipping insertion in model container [2021-10-16 02:08:06,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:06" (1/1) ... [2021-10-16 02:08:06,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:06,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:06,413 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2671,2684] [2021-10-16 02:08:06,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:06,438 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-16 02:08:06,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65a258e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:06, skipping insertion in model container [2021-10-16 02:08:06,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:06,439 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:08:06,442 INFO L168 Benchmark]: Toolchain (without parser) took 302.71 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 77.8 MB in the beginning and 116.6 MB in the end (delta: -38.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:06,443 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:06,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.55 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 77.6 MB in the beginning and 116.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:06,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.55 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 77.6 MB in the beginning and 116.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:08:08,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:08,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:08,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:08,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:08,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:08,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:08,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:08,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:08,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:08,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:08,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:08,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:08,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:08,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:08,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:08,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:08,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:08,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:08,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:08,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:08,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:08,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:08,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:08,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:08,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:08,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:08,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:08,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:08,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:08,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:08,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:08,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:08,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:08,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:08,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:08,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:08,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:08,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:08,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:08,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:08,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:08:08,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:08,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:08,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:08,963 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:08,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:08,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:08,964 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:08,964 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:08,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:08,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:08,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:08,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:08,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:08,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:08:08,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:08,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:08:08,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:08,967 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:08:08,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:08:08,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:08,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:08:08,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:08,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:08:08,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:08,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:08:08,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:08,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:08,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:08,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:08,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:08:08,970 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:08:08,970 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:08,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:08:08,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:08,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:08,971 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_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a258ea6aa778194d56c65a47722c4c20ebabb7c [2021-10-16 02:08:09,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:09,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:09,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:09,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:09,417 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:09,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-10-16 02:08:09,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/9932968c9/792dc7e6e5744c0585e88a86bafcf87e/FLAGcfd52e753 [2021-10-16 02:08:10,043 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:10,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2021-10-16 02:08:10,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/9932968c9/792dc7e6e5744c0585e88a86bafcf87e/FLAGcfd52e753 [2021-10-16 02:08:10,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/data/9932968c9/792dc7e6e5744c0585e88a86bafcf87e [2021-10-16 02:08:10,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:10,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:10,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:10,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:10,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:10,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151b9ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10, skipping insertion in model container [2021-10-16 02:08:10,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:10,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:10,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2671,2684] [2021-10-16 02:08:10,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:10,704 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:08:10,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:10,726 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2671,2684] [2021-10-16 02:08:10,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:10,743 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:10,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2671,2684] [2021-10-16 02:08:10,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:10,854 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:10,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10 WrapperNode [2021-10-16 02:08:10,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:10,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:10,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:10,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:10,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:10,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:10,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:10,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:10,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:10,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:11,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:11,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:11,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:11,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:11,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:11,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:11,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (1/1) ... [2021-10-16 02:08:11,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:11,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:11,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:11,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:08:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:08:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 02:08:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 02:08:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 02:08:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 02:08:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-16 02:08:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-16 02:08:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 02:08:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 02:08:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:08:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:08:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:08:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:08:11,126 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 02:08:12,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:08:12,438 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-16 02:08:12,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:12 BoogieIcfgContainer [2021-10-16 02:08:12,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:08:12,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:08:12,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:08:12,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:08:12,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:10" (1/3) ... [2021-10-16 02:08:12,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ff0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:12, skipping insertion in model container [2021-10-16 02:08:12,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:10" (2/3) ... [2021-10-16 02:08:12,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ff0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:12, skipping insertion in model container [2021-10-16 02:08:12,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:12" (3/3) ... [2021-10-16 02:08:12,457 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2021-10-16 02:08:12,471 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 02:08:12,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:08:12,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:08:12,471 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 02:08:12,541 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,542 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,542 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,542 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,543 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,543 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,543 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,543 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,543 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,544 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,544 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,552 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,553 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,553 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,554 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,555 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,555 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,567 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,567 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,567 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,568 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,568 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,568 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,568 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,568 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,569 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,569 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,569 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,569 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,570 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,570 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,570 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,570 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,571 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,571 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,571 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,572 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,572 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,572 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,572 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,573 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,573 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,573 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,573 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,573 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,574 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,574 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,574 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,575 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,575 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,575 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,575 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,576 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,576 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,576 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,576 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,576 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,577 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,577 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,577 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,577 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,581 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,581 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,581 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,582 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,582 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,582 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,585 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,585 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,587 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,590 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,591 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,592 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,592 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,592 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,592 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,593 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,593 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,593 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,594 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,594 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:08:12,605 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-16 02:08:12,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:08:12,665 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, mConcurrency=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 [2021-10-16 02:08:12,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:08:12,686 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 02:08:12,698 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 257 transitions, 538 flow [2021-10-16 02:08:12,702 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 257 transitions, 538 flow [2021-10-16 02:08:12,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 257 transitions, 538 flow [2021-10-16 02:08:12,818 INFO L129 PetriNetUnfolder]: 26/254 cut-off events. [2021-10-16 02:08:12,819 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-16 02:08:12,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 26/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 218 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 210. Up to 3 conditions per place. [2021-10-16 02:08:12,833 INFO L116 LiptonReduction]: Number of co-enabled transitions 3162 [2021-10-16 02:09:04,054 INFO L131 LiptonReduction]: Checked pairs total: 5729 [2021-10-16 02:09:04,055 INFO L133 LiptonReduction]: Total number of compositions: 271 [2021-10-16 02:09:04,065 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 106 flow [2021-10-16 02:09:04,106 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 313 states, 312 states have (on average 3.676282051282051) internal successors, (1147), 312 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 312 states have (on average 3.676282051282051) internal successors, (1147), 312 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:09:04,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:04,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:04,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:04,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash 401556214, now seen corresponding path program 1 times [2021-10-16 02:09:04,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:04,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256263735] [2021-10-16 02:09:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:04,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:04,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:04,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:09:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:04,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:04,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:04,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:04,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256263735] [2021-10-16 02:09:04,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256263735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:04,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:04,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-10-16 02:09:04,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814085513] [2021-10-16 02:09:04,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:09:04,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:09:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:04,923 INFO L87 Difference]: Start difference. First operand has 313 states, 312 states have (on average 3.676282051282051) internal successors, (1147), 312 states have internal predecessors, (1147), 0 states have call successors, (0), 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 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:05,756 INFO L93 Difference]: Finished difference Result 314 states and 1148 transitions. [2021-10-16 02:09:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:09:05,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-16 02:09:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:05,777 INFO L225 Difference]: With dead ends: 314 [2021-10-16 02:09:05,777 INFO L226 Difference]: Without dead ends: 314 [2021-10-16 02:09:05,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-16 02:09:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-10-16 02:09:05,848 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) [2021-10-16 02:09:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1148 transitions. [2021-10-16 02:09:05,856 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1148 transitions. Word has length 22 [2021-10-16 02:09:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:05,857 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1148 transitions. [2021-10-16 02:09:05,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1148 transitions. [2021-10-16 02:09:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:09:05,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:05,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:05,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:09:06,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:06,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 803731460, now seen corresponding path program 1 times [2021-10-16 02:09:06,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:06,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224450251] [2021-10-16 02:09:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:06,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:06,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:06,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:06,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:09:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:06,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:09:06,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:06,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:06,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:06,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224450251] [2021-10-16 02:09:06,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224450251] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:06,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:06,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 7 [2021-10-16 02:09:06,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412934808] [2021-10-16 02:09:06,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:09:06,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:09:06,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:09:06,636 INFO L87 Difference]: Start difference. First operand 314 states and 1148 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:07,406 INFO L93 Difference]: Finished difference Result 316 states and 1150 transitions. [2021-10-16 02:09:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:09:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-16 02:09:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:07,413 INFO L225 Difference]: With dead ends: 316 [2021-10-16 02:09:07,413 INFO L226 Difference]: Without dead ends: 316 [2021-10-16 02:09:07,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-16 02:09:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-10-16 02:09:07,444 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) [2021-10-16 02:09:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1150 transitions. [2021-10-16 02:09:07,448 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1150 transitions. Word has length 23 [2021-10-16 02:09:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:07,448 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1150 transitions. [2021-10-16 02:09:07,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1150 transitions. [2021-10-16 02:09:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:09:07,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:07,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:07,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:07,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:07,670 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:07,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2020941283, now seen corresponding path program 1 times [2021-10-16 02:09:07,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:07,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137908589] [2021-10-16 02:09:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:07,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:07,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:07,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:07,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:09:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:07,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:09:07,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:08,771 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-10-16 02:09:08,772 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 124 treesize of output 252 [2021-10-16 02:09:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:10,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:10,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:10,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137908589] [2021-10-16 02:09:10,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137908589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:10,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:10,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:09:10,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958236668] [2021-10-16 02:09:10,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:10,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:10,342 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) [2021-10-16 02:09:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:10,515 INFO L93 Difference]: Finished difference Result 609 states and 2245 transitions. [2021-10-16 02:09:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:10,516 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 [2021-10-16 02:09:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:10,525 INFO L225 Difference]: With dead ends: 609 [2021-10-16 02:09:10,525 INFO L226 Difference]: Without dead ends: 594 [2021-10-16 02:09:10,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:10,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-10-16 02:09:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 416. [2021-10-16 02:09:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.744578313253012) internal successors, (1554), 415 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1554 transitions. [2021-10-16 02:09:10,568 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1554 transitions. Word has length 25 [2021-10-16 02:09:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:10,570 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1554 transitions. [2021-10-16 02:09:10,571 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) [2021-10-16 02:09:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1554 transitions. [2021-10-16 02:09:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:10,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:10,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:10,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:09:10,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:10,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:10,790 INFO L82 PathProgramCache]: Analyzing trace with hash -844980366, now seen corresponding path program 1 times [2021-10-16 02:09:10,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:10,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165140248] [2021-10-16 02:09:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:10,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:10,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:10,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:10,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:09:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:11,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:09:11,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:11,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:11,284 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:11,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165140248] [2021-10-16 02:09:11,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165140248] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:11,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:11,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:09:11,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956083784] [2021-10-16 02:09:11,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:09:11,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:09:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:11,287 INFO L87 Difference]: Start difference. First operand 416 states and 1554 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2021-10-16 02:09:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:12,335 INFO L93 Difference]: Finished difference Result 640 states and 2267 transitions. [2021-10-16 02:09:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:09:12,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 [2021-10-16 02:09:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:12,347 INFO L225 Difference]: With dead ends: 640 [2021-10-16 02:09:12,347 INFO L226 Difference]: Without dead ends: 620 [2021-10-16 02:09:12,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-16 02:09:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 494. [2021-10-16 02:09:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.665314401622718) internal successors, (1807), 493 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1807 transitions. [2021-10-16 02:09:12,387 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1807 transitions. Word has length 28 [2021-10-16 02:09:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:12,388 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1807 transitions. [2021-10-16 02:09:12,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2021-10-16 02:09:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1807 transitions. [2021-10-16 02:09:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:12,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:12,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:12,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:12,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:12,614 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:12,615 INFO L82 PathProgramCache]: Analyzing trace with hash 972025783, now seen corresponding path program 1 times [2021-10-16 02:09:12,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:12,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269623484] [2021-10-16 02:09:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:12,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:12,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:12,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:12,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:09:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:12,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:12,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:13,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:13,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:13,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269623484] [2021-10-16 02:09:13,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269623484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:13,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:13,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:13,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168559894] [2021-10-16 02:09:13,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:13,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:13,434 INFO L87 Difference]: Start difference. First operand 494 states and 1807 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:15,998 INFO L93 Difference]: Finished difference Result 1150 states and 4246 transitions. [2021-10-16 02:09:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:09:16,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:09:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:16,019 INFO L225 Difference]: With dead ends: 1150 [2021-10-16 02:09:16,020 INFO L226 Difference]: Without dead ends: 1120 [2021-10-16 02:09:16,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 214.3ms TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:09:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-16 02:09:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 620. [2021-10-16 02:09:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.6623586429725363) internal successors, (2267), 619 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2267 transitions. [2021-10-16 02:09:16,077 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2267 transitions. Word has length 28 [2021-10-16 02:09:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:16,077 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2267 transitions. [2021-10-16 02:09:16,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2267 transitions. [2021-10-16 02:09:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:16,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:16,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:16,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:16,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:16,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1538228687, now seen corresponding path program 2 times [2021-10-16 02:09:16,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:16,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945101434] [2021-10-16 02:09:16,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:09:16,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:16,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:16,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:09:16,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:09:16,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:16,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:16,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:17,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:17,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:17,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945101434] [2021-10-16 02:09:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945101434] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:17,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:17,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:17,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884245746] [2021-10-16 02:09:17,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:17,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:17,193 INFO L87 Difference]: Start difference. First operand 620 states and 2267 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) [2021-10-16 02:09:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:20,363 INFO L93 Difference]: Finished difference Result 1662 states and 6484 transitions. [2021-10-16 02:09:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:09:20,364 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 [2021-10-16 02:09:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:20,387 INFO L225 Difference]: With dead ends: 1662 [2021-10-16 02:09:20,388 INFO L226 Difference]: Without dead ends: 1612 [2021-10-16 02:09:20,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 233.3ms TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:09:20,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2021-10-16 02:09:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 872. [2021-10-16 02:09:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.970149253731343) internal successors, (3458), 871 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3458 transitions. [2021-10-16 02:09:20,466 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3458 transitions. Word has length 28 [2021-10-16 02:09:20,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:20,466 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 3458 transitions. [2021-10-16 02:09:20,467 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) [2021-10-16 02:09:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3458 transitions. [2021-10-16 02:09:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:20,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:20,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:20,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:20,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:20,687 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:20,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1537709877, now seen corresponding path program 3 times [2021-10-16 02:09:20,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:20,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237497047] [2021-10-16 02:09:20,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:09:20,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:20,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:20,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:20,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:09:21,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 02:09:21,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:21,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:21,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:21,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:21,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:21,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237497047] [2021-10-16 02:09:21,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237497047] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:21,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:21,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:21,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173154292] [2021-10-16 02:09:21,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:21,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:21,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:21,623 INFO L87 Difference]: Start difference. First operand 872 states and 3458 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:23,162 INFO L93 Difference]: Finished difference Result 1620 states and 6061 transitions. [2021-10-16 02:09:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:09:23,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:09:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:23,184 INFO L225 Difference]: With dead ends: 1620 [2021-10-16 02:09:23,184 INFO L226 Difference]: Without dead ends: 1620 [2021-10-16 02:09:23,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 240.7ms TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:09:23,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-10-16 02:09:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 974. [2021-10-16 02:09:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 3.935251798561151) internal successors, (3829), 973 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 3829 transitions. [2021-10-16 02:09:23,255 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 3829 transitions. Word has length 28 [2021-10-16 02:09:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:23,255 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 3829 transitions. [2021-10-16 02:09:23,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:23,256 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 3829 transitions. [2021-10-16 02:09:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:23,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:23,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:23,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-16 02:09:23,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:23,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:23,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1818244819, now seen corresponding path program 4 times [2021-10-16 02:09:23,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:23,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289725950] [2021-10-16 02:09:23,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:09:23,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:23,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:23,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:23,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:09:23,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:09:23,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:23,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:23,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:24,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:24,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289725950] [2021-10-16 02:09:24,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289725950] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:24,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:24,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:24,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899572432] [2021-10-16 02:09:24,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:24,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:24,256 INFO L87 Difference]: Start difference. First operand 974 states and 3829 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:25,926 INFO L93 Difference]: Finished difference Result 1152 states and 4381 transitions. [2021-10-16 02:09:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:09:25,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:09:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:25,942 INFO L225 Difference]: With dead ends: 1152 [2021-10-16 02:09:25,943 INFO L226 Difference]: Without dead ends: 1152 [2021-10-16 02:09:25,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:09:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-10-16 02:09:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 880. [2021-10-16 02:09:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 3.9180887372013653) internal successors, (3444), 879 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3444 transitions. [2021-10-16 02:09:25,999 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3444 transitions. Word has length 28 [2021-10-16 02:09:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:25,999 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 3444 transitions. [2021-10-16 02:09:26,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3444 transitions. [2021-10-16 02:09:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:26,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:26,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:26,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:26,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:26,232 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1167313669, now seen corresponding path program 5 times [2021-10-16 02:09:26,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:26,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336135853] [2021-10-16 02:09:26,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 02:09:26,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:26,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:26,235 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:26,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:09:26,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:09:26,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:26,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:26,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:26,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:27,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:27,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336135853] [2021-10-16 02:09:27,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336135853] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:27,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:27,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:27,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449638155] [2021-10-16 02:09:27,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:27,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:27,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:27,170 INFO L87 Difference]: Start difference. First operand 880 states and 3444 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:30,691 INFO L93 Difference]: Finished difference Result 1958 states and 7543 transitions. [2021-10-16 02:09:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:09:30,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:09:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:30,730 INFO L225 Difference]: With dead ends: 1958 [2021-10-16 02:09:30,731 INFO L226 Difference]: Without dead ends: 1864 [2021-10-16 02:09:30,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 296.3ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:09:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-10-16 02:09:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 848. [2021-10-16 02:09:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.689492325855962) internal successors, (3125), 847 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3125 transitions. [2021-10-16 02:09:30,795 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3125 transitions. Word has length 28 [2021-10-16 02:09:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:30,796 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3125 transitions. [2021-10-16 02:09:30,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3125 transitions. [2021-10-16 02:09:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:30,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:30,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:30,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-16 02:09:31,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:31,018 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:31,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2130325855, now seen corresponding path program 6 times [2021-10-16 02:09:31,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:31,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332721719] [2021-10-16 02:09:31,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 02:09:31,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:31,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:31,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:09:31,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-16 02:09:31,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:31,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:31,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:31,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:31,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:31,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332721719] [2021-10-16 02:09:31,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332721719] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:31,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:31,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:31,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828593357] [2021-10-16 02:09:31,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:31,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:31,863 INFO L87 Difference]: Start difference. First operand 848 states and 3125 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) [2021-10-16 02:09:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:33,034 INFO L93 Difference]: Finished difference Result 940 states and 3370 transitions. [2021-10-16 02:09:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:09:33,035 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 [2021-10-16 02:09:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:33,045 INFO L225 Difference]: With dead ends: 940 [2021-10-16 02:09:33,045 INFO L226 Difference]: Without dead ends: 924 [2021-10-16 02:09:33,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 181.2ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:09:33,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-16 02:09:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 844. [2021-10-16 02:09:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.6892052194543297) internal successors, (3110), 843 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3110 transitions. [2021-10-16 02:09:33,085 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3110 transitions. Word has length 28 [2021-10-16 02:09:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:33,085 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 3110 transitions. [2021-10-16 02:09:33,085 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) [2021-10-16 02:09:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3110 transitions. [2021-10-16 02:09:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:33,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:33,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:33,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:33,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:33,306 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:33,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1369706567, now seen corresponding path program 7 times [2021-10-16 02:09:33,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:33,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466184098] [2021-10-16 02:09:33,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 02:09:33,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:33,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:33,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:33,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:09:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:33,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:33,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:33,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:34,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:34,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466184098] [2021-10-16 02:09:34,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466184098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:34,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:34,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:34,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843581545] [2021-10-16 02:09:34,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:34,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:34,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:34,074 INFO L87 Difference]: Start difference. First operand 844 states and 3110 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) [2021-10-16 02:09:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:34,981 INFO L93 Difference]: Finished difference Result 1048 states and 3732 transitions. [2021-10-16 02:09:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:09:34,982 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 [2021-10-16 02:09:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:34,991 INFO L225 Difference]: With dead ends: 1048 [2021-10-16 02:09:34,992 INFO L226 Difference]: Without dead ends: 1036 [2021-10-16 02:09:34,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:09:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-16 02:09:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 862. [2021-10-16 02:09:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.7026713124274098) internal successors, (3188), 861 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3188 transitions. [2021-10-16 02:09:35,062 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3188 transitions. Word has length 28 [2021-10-16 02:09:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:35,063 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3188 transitions. [2021-10-16 02:09:35,063 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) [2021-10-16 02:09:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3188 transitions. [2021-10-16 02:09:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:35,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:35,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:35,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-16 02:09:35,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:35,285 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -293498077, now seen corresponding path program 8 times [2021-10-16 02:09:35,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:35,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711552745] [2021-10-16 02:09:35,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:09:35,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:35,287 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:35,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:09:35,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:09:35,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:35,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:35,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:36,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:36,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:36,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711552745] [2021-10-16 02:09:36,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711552745] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:09:36,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:09:36,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-16 02:09:36,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608281798] [2021-10-16 02:09:36,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:09:36,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:09:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:36,242 INFO L87 Difference]: Start difference. First operand 862 states and 3188 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:37,524 INFO L93 Difference]: Finished difference Result 1084 states and 3950 transitions. [2021-10-16 02:09:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:09:37,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:09:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:37,540 INFO L225 Difference]: With dead ends: 1084 [2021-10-16 02:09:37,540 INFO L226 Difference]: Without dead ends: 1010 [2021-10-16 02:09:37,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:09:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-10-16 02:09:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 594. [2021-10-16 02:09:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 3.688026981450253) internal successors, (2187), 593 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 2187 transitions. [2021-10-16 02:09:37,575 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 2187 transitions. Word has length 28 [2021-10-16 02:09:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:37,575 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 2187 transitions. [2021-10-16 02:09:37,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 2187 transitions. [2021-10-16 02:09:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:37,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:37,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:37,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:37,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:37,804 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:37,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1598494755, now seen corresponding path program 9 times [2021-10-16 02:09:37,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:37,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262360604] [2021-10-16 02:09:37,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:09:37,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:37,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:37,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:09:38,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 02:09:38,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:38,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:38,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:38,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:38,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:38,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262360604] [2021-10-16 02:09:38,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262360604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:38,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:38,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:38,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625562761] [2021-10-16 02:09:38,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:38,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:38,631 INFO L87 Difference]: Start difference. First operand 594 states and 2187 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) [2021-10-16 02:09:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:40,716 INFO L93 Difference]: Finished difference Result 844 states and 3127 transitions. [2021-10-16 02:09:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:09:40,716 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 [2021-10-16 02:09:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:40,724 INFO L225 Difference]: With dead ends: 844 [2021-10-16 02:09:40,724 INFO L226 Difference]: Without dead ends: 826 [2021-10-16 02:09:40,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 222.7ms TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:09:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-16 02:09:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 594. [2021-10-16 02:09:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 3.6913996627318717) internal successors, (2189), 593 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 2189 transitions. [2021-10-16 02:09:40,747 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 2189 transitions. Word has length 28 [2021-10-16 02:09:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:40,747 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 2189 transitions. [2021-10-16 02:09:40,747 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) [2021-10-16 02:09:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 2189 transitions. [2021-10-16 02:09:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:40,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:40,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:40,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-16 02:09:40,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:40,964 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:40,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1211383215, now seen corresponding path program 10 times [2021-10-16 02:09:40,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:40,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812454552] [2021-10-16 02:09:40,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:09:40,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:40,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:40,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:09:41,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:09:41,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:41,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:41,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:41,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:41,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812454552] [2021-10-16 02:09:41,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812454552] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:41,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:41,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:41,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880187125] [2021-10-16 02:09:41,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:41,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:41,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:41,677 INFO L87 Difference]: Start difference. First operand 594 states and 2189 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) [2021-10-16 02:09:44,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:44,151 INFO L93 Difference]: Finished difference Result 1302 states and 4861 transitions. [2021-10-16 02:09:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:09:44,153 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 [2021-10-16 02:09:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:44,163 INFO L225 Difference]: With dead ends: 1302 [2021-10-16 02:09:44,164 INFO L226 Difference]: Without dead ends: 1278 [2021-10-16 02:09:44,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 216.9ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:09:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-10-16 02:09:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 660. [2021-10-16 02:09:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.748103186646434) internal successors, (2470), 659 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2470 transitions. [2021-10-16 02:09:44,208 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2470 transitions. Word has length 28 [2021-10-16 02:09:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:44,208 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2470 transitions. [2021-10-16 02:09:44,209 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) [2021-10-16 02:09:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2470 transitions. [2021-10-16 02:09:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:09:44,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:44,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:44,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-16 02:09:44,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:44,428 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:44,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1211902025, now seen corresponding path program 11 times [2021-10-16 02:09:44,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:44,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327893120] [2021-10-16 02:09:44,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 02:09:44,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:44,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:44,430 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:44,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:09:44,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:09:44,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:44,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:09:44,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:45,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:45,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:45,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327893120] [2021-10-16 02:09:45,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327893120] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:45,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:45,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:45,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955251486] [2021-10-16 02:09:45,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:09:45,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:09:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:45,395 INFO L87 Difference]: Start difference. First operand 660 states and 2470 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:46,402 INFO L93 Difference]: Finished difference Result 872 states and 3116 transitions. [2021-10-16 02:09:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:09:46,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:09:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:46,408 INFO L225 Difference]: With dead ends: 872 [2021-10-16 02:09:46,408 INFO L226 Difference]: Without dead ends: 872 [2021-10-16 02:09:46,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:09:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-16 02:09:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2021-10-16 02:09:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.7215815485996706) internal successors, (2259), 607 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2259 transitions. [2021-10-16 02:09:46,450 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2259 transitions. Word has length 28 [2021-10-16 02:09:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:46,450 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2259 transitions. [2021-10-16 02:09:46,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2259 transitions. [2021-10-16 02:09:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:09:46,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:46,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:46,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:46,671 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash -646076680, now seen corresponding path program 1 times [2021-10-16 02:09:46,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:46,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943059621] [2021-10-16 02:09:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:46,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:46,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:46,673 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:46,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:09:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:47,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:09:47,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:09:47,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:09:47,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:47,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943059621] [2021-10-16 02:09:47,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943059621] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:47,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [988487943] [2021-10-16 02:09:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:47,825 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:47,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:09:47,838 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:09:47,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 02:09:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:48,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:09:48,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:48,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:09:48,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [988487943] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:48,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830664535] [2021-10-16 02:09:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:48,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:09:48,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:09:48,919 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:09:48,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 02:09:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:49,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:09:49,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:09:49,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:09:49,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830664535] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:49,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:09:49,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 24 [2021-10-16 02:09:49,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926053743] [2021-10-16 02:09:49,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-16 02:09:49,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-16 02:09:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:09:49,858 INFO L87 Difference]: Start difference. First operand 608 states and 2259 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:56,637 INFO L93 Difference]: Finished difference Result 1558 states and 5965 transitions. [2021-10-16 02:09:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-16 02:09:56,638 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 02:09:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:56,644 INFO L225 Difference]: With dead ends: 1558 [2021-10-16 02:09:56,644 INFO L226 Difference]: Without dead ends: 1505 [2021-10-16 02:09:56,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 2245.7ms TimeCoverageRelationStatistics Valid=501, Invalid=1949, Unknown=0, NotChecked=0, Total=2450 [2021-10-16 02:09:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-16 02:09:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 865. [2021-10-16 02:09:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 3.892361111111111) internal successors, (3363), 864 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 3363 transitions. [2021-10-16 02:09:56,688 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 3363 transitions. Word has length 29 [2021-10-16 02:09:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:56,688 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 3363 transitions. [2021-10-16 02:09:56,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 3363 transitions. [2021-10-16 02:09:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:09:56,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:56,693 INFO L512 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] [2021-10-16 02:09:56,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:56,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:57,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:57,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:09:57,310 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash -40713427, now seen corresponding path program 2 times [2021-10-16 02:09:57,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:57,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720251363] [2021-10-16 02:09:57,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:09:57,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:57,312 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:57,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:09:58,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:09:58,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:09:58,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:09:58,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:09:58,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:09:58,501 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:58,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720251363] [2021-10-16 02:09:58,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720251363] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:09:58,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:09:58,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-10-16 02:09:58,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78745073] [2021-10-16 02:09:58,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:09:58,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:09:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:09:58,503 INFO L87 Difference]: Start difference. First operand 865 states and 3363 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:59,495 INFO L93 Difference]: Finished difference Result 1131 states and 4426 transitions. [2021-10-16 02:09:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:09:59,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-16 02:09:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:59,500 INFO L225 Difference]: With dead ends: 1131 [2021-10-16 02:09:59,501 INFO L226 Difference]: Without dead ends: 1131 [2021-10-16 02:09:59,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 160.5ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:09:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-10-16 02:09:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 843. [2021-10-16 02:09:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 3.8717339667458432) internal successors, (3260), 842 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 3260 transitions. [2021-10-16 02:09:59,556 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 3260 transitions. Word has length 32 [2021-10-16 02:09:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:59,557 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 3260 transitions. [2021-10-16 02:09:59,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 3260 transitions. [2021-10-16 02:09:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:09:59,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:59,561 INFO L512 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] [2021-10-16 02:09:59,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-16 02:09:59,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:59,774 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:09:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1694449795, now seen corresponding path program 3 times [2021-10-16 02:09:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:59,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787819535] [2021-10-16 02:09:59,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:09:59,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:59,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:59,777 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:10:00,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 02:10:00,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:10:00,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:10:00,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:00,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:00,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:00,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787819535] [2021-10-16 02:10:00,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787819535] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:00,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1881942378] [2021-10-16 02:10:00,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:10:00,877 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:10:00,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:10:00,878 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:10:00,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 02:10:01,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 02:10:01,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:10:01,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:10:01,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:10:02,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:10:02,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1881942378] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:02,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774559839] [2021-10-16 02:10:02,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:10:02,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:10:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:10:02,584 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:10:02,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 02:10:03,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 02:10:03,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:10:03,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:10:03,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:03,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:03,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774559839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:03,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:10:03,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 20 [2021-10-16 02:10:03,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917825549] [2021-10-16 02:10:03,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-16 02:10:03,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-16 02:10:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:10:03,559 INFO L87 Difference]: Start difference. First operand 843 states and 3260 transitions. Second operand has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:07,521 INFO L93 Difference]: Finished difference Result 2521 states and 9367 transitions. [2021-10-16 02:10:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-16 02:10:07,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-16 02:10:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:07,539 INFO L225 Difference]: With dead ends: 2521 [2021-10-16 02:10:07,539 INFO L226 Difference]: Without dead ends: 2473 [2021-10-16 02:10:07,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1343.2ms TimeCoverageRelationStatistics Valid=564, Invalid=1598, Unknown=0, NotChecked=0, Total=2162 [2021-10-16 02:10:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-10-16 02:10:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1125. [2021-10-16 02:10:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1124 states have (on average 3.758896797153025) internal successors, (4225), 1124 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 4225 transitions. [2021-10-16 02:10:07,607 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 4225 transitions. Word has length 32 [2021-10-16 02:10:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:07,607 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 4225 transitions. [2021-10-16 02:10:07,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 4225 transitions. [2021-10-16 02:10:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:10:07,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:07,611 INFO L512 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] [2021-10-16 02:10:07,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:07,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-16 02:10:08,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:08,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:10:08,227 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:10:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:08,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1311615948, now seen corresponding path program 1 times [2021-10-16 02:10:08,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:10:08,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349249067] [2021-10-16 02:10:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:08,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:10:08,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:10:08,229 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:10:08,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:10:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:10:08,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:09,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:09,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:09,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349249067] [2021-10-16 02:10:09,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349249067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:09,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160002388] [2021-10-16 02:10:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:09,260 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:10:09,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:10:09,263 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:10:09,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 02:10:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:10:10,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:10:10,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:10:10,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160002388] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:10,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262409581] [2021-10-16 02:10:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:10,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:10:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:10:10,644 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:10:10,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 02:10:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:11,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:10:11,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:11,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:10:11,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262409581] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:11,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:10:11,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 20 [2021-10-16 02:10:11,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960758702] [2021-10-16 02:10:11,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-16 02:10:11,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:11,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-16 02:10:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:10:11,655 INFO L87 Difference]: Start difference. First operand 1125 states and 4225 transitions. Second operand has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:15,287 INFO L93 Difference]: Finished difference Result 1925 states and 7163 transitions. [2021-10-16 02:10:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-16 02:10:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-16 02:10:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:15,298 INFO L225 Difference]: With dead ends: 1925 [2021-10-16 02:10:15,298 INFO L226 Difference]: Without dead ends: 1925 [2021-10-16 02:10:15,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1203.3ms TimeCoverageRelationStatistics Valid=505, Invalid=1565, Unknown=0, NotChecked=0, Total=2070 [2021-10-16 02:10:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2021-10-16 02:10:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 803. [2021-10-16 02:10:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 3.7231920199501247) internal successors, (2986), 802 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2986 transitions. [2021-10-16 02:10:15,346 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2986 transitions. Word has length 32 [2021-10-16 02:10:15,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:15,347 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2986 transitions. [2021-10-16 02:10:15,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:15,347 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2986 transitions. [2021-10-16 02:10:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 02:10:15,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:15,366 INFO L512 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] [2021-10-16 02:10:15,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:15,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:15,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-16 02:10:15,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:15,994 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:10:15,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:15,994 INFO L82 PathProgramCache]: Analyzing trace with hash -247193430, now seen corresponding path program 1 times [2021-10-16 02:10:15,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:10:15,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019139574] [2021-10-16 02:10:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:15,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:10:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:10:15,996 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:10:15,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:10:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:10:17,308 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:10:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:10:17,998 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:10:17,999 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:10:18,000 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:18,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 02:10:18,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 02:10:18,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-16 02:10:18,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:18,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:18,225 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 02:10:18,225 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:10:18,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:10:18 BasicIcfg [2021-10-16 02:10:18,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:10:18,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:10:18,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:10:18,354 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:10:18,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:12" (3/4) ... [2021-10-16 02:10:18,357 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:10:18,471 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3048f47-09ee-4cbc-a386-550f4a85d548/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:10:18,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:10:18,473 INFO L168 Benchmark]: Toolchain (without parser) took 128094.36 ms. Allocated memory was 65.0 MB in the beginning and 144.7 MB in the end (delta: 79.7 MB). Free memory was 44.1 MB in the beginning and 73.2 MB in the end (delta: -29.1 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,473 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:18,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.60 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 46.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.79 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 44.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,475 INFO L168 Benchmark]: Boogie Preprocessor took 81.67 ms. Allocated memory is still 65.0 MB. Free memory was 44.0 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,475 INFO L168 Benchmark]: RCFGBuilder took 1420.75 ms. Allocated memory is still 65.0 MB. Free memory was 41.7 MB in the beginning and 29.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,476 INFO L168 Benchmark]: TraceAbstraction took 125911.05 ms. Allocated memory was 65.0 MB in the beginning and 144.7 MB in the end (delta: 79.7 MB). Free memory was 28.9 MB in the beginning and 87.9 MB in the end (delta: -59.0 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,477 INFO L168 Benchmark]: Witness Printer took 117.62 ms. Allocated memory is still 144.7 MB. Free memory was 87.9 MB in the beginning and 73.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:18,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 475.60 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 46.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.79 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 44.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.67 ms. Allocated memory is still 65.0 MB. Free memory was 44.0 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1420.75 ms. Allocated memory is still 65.0 MB. Free memory was 41.7 MB in the beginning and 29.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 125911.05 ms. Allocated memory was 65.0 MB in the beginning and 144.7 MB in the end (delta: 79.7 MB). Free memory was 28.9 MB in the beginning and 87.9 MB in the end (delta: -59.0 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. * Witness Printer took 117.62 ms. Allocated memory is still 144.7 MB. Free memory was 87.9 MB in the beginning and 73.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 51353.4ms, 241 PlacesBefore, 42 PlacesAfterwards, 257 TransitionsBefore, 41 TransitionsAfterwards, 3162 CoEnabledTransitionPairs, 8 FixpointIterations, 163 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 36 TrivialYvCompositions, 16 ConcurrentYvCompositions, 17 ChoiceCompositions, 271 TotalNumberOfCompositions, 5729 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3832, positive: 3662, positive conditional: 0, positive unconditional: 3662, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2199, positive: 2146, positive conditional: 0, positive unconditional: 2146, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2199, positive: 2146, positive conditional: 0, positive unconditional: 2146, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8626, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8626, negative conditional: 0, negative unconditional: 8626, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3832, positive: 1516, positive conditional: 0, positive unconditional: 1516, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 2199, unknown conditional: 0, unknown unconditional: 2199] , Statistics on independence cache: Total cache size (in pairs): 218, Positive cache size: 200, Positive conditional cache size: 0, Positive unconditional cache size: 200, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int *A, *B, *C; [L42] 0 int maxa, maxb, maxc, N, p; [L86] 0 pthread_t t1, t2, t3; [L88] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L118] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L119] 0 int i = 0; VAL [A={0:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={0:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={0:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND FALSE 0 !(i < size) [L122] 0 return arr; [L90] 0 A = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L118] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L119] 0 int i = 0; VAL [A={1:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={0:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND FALSE 0 !(i < size) [L122] 0 return arr; [L91] 0 B = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L118] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L119] 0 int i = 0; VAL [A={1:0}, B={2:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={2:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={2:0}, C={0:0}, maxa=0, maxb=0, maxc=0, N=2, p=0] [L119] COND FALSE 0 !(i < size) [L122] 0 return arr; [L92] 0 C = create_fresh_int_array(N) [L94] 0 p = 1 [L96] EXPR 0 A[0] [L96] 0 maxa = A[0] [L97] EXPR 0 B[0] [L97] 0 maxb = B[0] [L98] EXPR 0 A[0] [L98] EXPR 0 B[0] [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L128] 0 return a + b; [L98] 0 maxc = plus(A[0], B[0]) [L101] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={1:0}, B={2:0}, C={3:0}, maxa=2147483636, maxb=7, maxc=2147483643, N=2, p=1] [L48] 1 int i=1; VAL [A={1:0}, B={2:0}, C={3:0}, i=1, maxa=2147483636, maxb=7, maxc=2147483643, N=2, p=1] [L102] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={1:0}, B={2:0}, C={3:0}, i=1, maxa=2147483636, maxb=7, maxc=2147483643, N=2, p=1] [L61] 2 int i=1; VAL [A={1:0}, B={2:0}, C={3:0}, i=1, maxa=2147483636, maxb=7, maxc=2147483643, N=2, p=1] [L61] COND TRUE 2 i