./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF --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 241cbbc1863278905c5862751ae4b8363464962676a0cc42dc0ceaf22f2782d4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:37:47,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:37:47,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:37:47,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:37:47,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:37:47,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:37:47,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:37:47,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:37:47,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:37:47,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:37:47,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:37:47,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:37:47,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:37:47,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:37:47,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:37:47,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:37:47,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:37:47,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:37:47,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:37:47,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:37:47,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:37:47,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:37:47,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:37:47,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:37:47,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:37:47,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:37:47,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:37:47,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:37:47,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:37:47,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:37:47,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:37:47,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:37:47,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:37:47,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:37:47,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:37:47,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:37:47,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:37:47,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:37:47,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:37:47,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:37:47,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:37:47,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:37:47,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:37:47,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:37:47,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:37:47,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:37:47,730 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:37:47,730 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:37:47,737 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:37:47,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:37:47,737 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:37:47,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:37:47,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:37:47,739 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:37:47,739 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:37:47,739 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:37:47,739 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:37:47,739 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:37:47,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:37:47,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:37:47,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:37:47,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:37:47,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:37:47,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:37:47,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:37:47,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:37:47,742 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:37:47,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:37:47,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:37:47,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:37:47,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:37:47,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:37:47,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:37:47,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:47,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:37:47,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:37:47,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:37:47,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:37:47,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:37:47,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:37:47,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:37:47,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:37:47,747 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_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 241cbbc1863278905c5862751ae4b8363464962676a0cc42dc0ceaf22f2782d4 [2021-11-12 22:37:48,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:37:48,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:37:48,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:37:48,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:37:48,041 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:37:48,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i [2021-11-12 22:37:48,118 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/b8da5c92e/11f815c6dccc41aa9779b5861f79de4e/FLAG560b270ad [2021-11-12 22:37:48,783 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:37:48,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i [2021-11-12 22:37:48,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/b8da5c92e/11f815c6dccc41aa9779b5861f79de4e/FLAG560b270ad [2021-11-12 22:37:48,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/b8da5c92e/11f815c6dccc41aa9779b5861f79de4e [2021-11-12 22:37:48,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:37:48,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:37:49,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:49,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:37:49,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:37:49,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:49,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e85fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:49, skipping insertion in model container [2021-11-12 22:37:49,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:49,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:37:49,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:37:49,601 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_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i[33022,33035] [2021-11-12 22:37:49,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:49,994 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:37:49,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e54ef68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:49, skipping insertion in model container [2021-11-12 22:37:49,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:49,995 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:37:49,997 INFO L158 Benchmark]: Toolchain (without parser) took 1004.63ms. Allocated memory is still 104.9MB. Free memory was 69.3MB in the beginning and 60.4MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:37:49,998 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 57.5MB in the beginning and 57.5MB in the end (delta: 53.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:37:49,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 985.38ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 60.4MB in the end (delta: 8.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:37:50,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 57.5MB in the beginning and 57.5MB in the end (delta: 53.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 985.38ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 60.4MB in the end (delta: 8.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF --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 241cbbc1863278905c5862751ae4b8363464962676a0cc42dc0ceaf22f2782d4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:37:52,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:37:52,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:37:52,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:37:52,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:37:52,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:37:52,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:37:52,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:37:52,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:37:52,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:37:52,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:37:52,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:37:52,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:37:52,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:37:52,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:37:52,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:37:52,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:37:52,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:37:52,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:37:52,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:37:52,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:37:52,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:37:52,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:37:52,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:37:52,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:37:52,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:37:52,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:37:52,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:37:52,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:37:52,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:37:52,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:37:52,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:37:52,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:37:52,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:37:52,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:37:52,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:37:52,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:37:52,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:37:52,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:37:52,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:37:52,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:37:52,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:37:52,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:37:52,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:37:52,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:37:52,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:37:52,635 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:37:52,636 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:37:52,636 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:37:52,636 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:37:52,636 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:37:52,637 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:37:52,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:37:52,638 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:37:52,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:37:52,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:37:52,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:37:52,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:37:52,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:37:52,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:37:52,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:37:52,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:37:52,641 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:37:52,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:37:52,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:37:52,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:37:52,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:37:52,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:37:52,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:37:52,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:52,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:37:52,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:37:52,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:37:52,644 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:37:52,644 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:37:52,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:37:52,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:37:52,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:37:52,646 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_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 241cbbc1863278905c5862751ae4b8363464962676a0cc42dc0ceaf22f2782d4 [2021-11-12 22:37:53,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:37:53,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:37:53,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:37:53,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:37:53,060 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:37:53,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i [2021-11-12 22:37:53,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/3da180d49/c961eb551ab04a53a4b0db564e737e93/FLAG86342c568 [2021-11-12 22:37:53,888 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:37:53,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i [2021-11-12 22:37:53,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/3da180d49/c961eb551ab04a53a4b0db564e737e93/FLAG86342c568 [2021-11-12 22:37:54,043 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/data/3da180d49/c961eb551ab04a53a4b0db564e737e93 [2021-11-12 22:37:54,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:37:54,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:37:54,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:54,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:37:54,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:37:54,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:54" (1/1) ... [2021-11-12 22:37:54,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505cdaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:54, skipping insertion in model container [2021-11-12 22:37:54,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:54" (1/1) ... [2021-11-12 22:37:54,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:37:54,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:37:54,666 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_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i[33022,33035] [2021-11-12 22:37:54,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:54,995 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:37:55,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:37:55,046 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_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i[33022,33035] [2021-11-12 22:37:55,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:55,262 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:37:55,285 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_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i[33022,33035] [2021-11-12 22:37:55,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:55,486 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:37:55,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55 WrapperNode [2021-11-12 22:37:55,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:55,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:55,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:37:55,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:37:55,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:55,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:37:55,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:37:55,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:37:55,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:37:55,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:37:55,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:37:55,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:37:55,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (1/1) ... [2021-11-12 22:37:55,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:55,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:55,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:37:56,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:37:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:37:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-12 22:37:56,046 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-12 22:37:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:37:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:37:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:37:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:37:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:37:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:37:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:37:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:37:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:37:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:37:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:37:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:37:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:37:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:37:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:38:09,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:38:09,738 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-12 22:38:09,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:09 BoogieIcfgContainer [2021-11-12 22:38:09,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:38:09,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:38:09,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:38:09,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:38:09,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:37:54" (1/3) ... [2021-11-12 22:38:09,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6759e3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:09, skipping insertion in model container [2021-11-12 22:38:09,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:55" (2/3) ... [2021-11-12 22:38:09,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6759e3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:09, skipping insertion in model container [2021-11-12 22:38:09,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:09" (3/3) ... [2021-11-12 22:38:09,758 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-3.i [2021-11-12 22:38:09,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:38:09,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:38:09,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:38:09,844 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:38:09,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:38:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 459 states have (on average 1.7124183006535947) internal successors, (786), 464 states have internal predecessors, (786), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-12 22:38:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:38:09,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:09,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:09,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1002051803, now seen corresponding path program 1 times [2021-11-12 22:38:09,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:09,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844681529] [2021-11-12 22:38:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:09,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:09,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:09,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:09,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:38:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:10,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:38:10,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:10,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:10,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:10,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844681529] [2021-11-12 22:38:10,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844681529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:10,374 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:38:10,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747296523] [2021-11-12 22:38:10,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:10,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:38:10,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:38:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:38:10,412 INFO L87 Difference]: Start difference. First operand has 478 states, 459 states have (on average 1.7124183006535947) internal successors, (786), 464 states have internal predecessors, (786), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:10,495 INFO L93 Difference]: Finished difference Result 954 states and 1634 transitions. [2021-11-12 22:38:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:38:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:38:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:10,513 INFO L225 Difference]: With dead ends: 954 [2021-11-12 22:38:10,514 INFO L226 Difference]: Without dead ends: 424 [2021-11-12 22:38:10,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:38:10,524 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:10,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 7.24ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:38:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-12 22:38:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-12 22:38:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 406 states have (on average 1.3251231527093597) internal successors, (538), 411 states have internal predecessors, (538), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 22:38:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 565 transitions. [2021-11-12 22:38:10,594 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 565 transitions. Word has length 13 [2021-11-12 22:38:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:10,594 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 565 transitions. [2021-11-12 22:38:10,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 565 transitions. [2021-11-12 22:38:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-12 22:38:10,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:10,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:10,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:10,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:10,805 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1116117503, now seen corresponding path program 1 times [2021-11-12 22:38:10,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:10,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067950703] [2021-11-12 22:38:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:10,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:10,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:10,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:10,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:38:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:11,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:38:11,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:11,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:11,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:11,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067950703] [2021-11-12 22:38:11,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067950703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:11,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:11,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:38:11,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371118113] [2021-11-12 22:38:11,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:11,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:11,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:11,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:11,430 INFO L87 Difference]: Start difference. First operand 424 states and 565 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:11,599 INFO L93 Difference]: Finished difference Result 670 states and 899 transitions. [2021-11-12 22:38:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-12 22:38:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:11,603 INFO L225 Difference]: With dead ends: 670 [2021-11-12 22:38:11,604 INFO L226 Difference]: Without dead ends: 428 [2021-11-12 22:38:11,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:11,607 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 289 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:11,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 1586 Invalid, 68 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [32 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 123.10ms Time] [2021-11-12 22:38:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-12 22:38:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-11-12 22:38:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 409 states have (on average 1.3031784841075795) internal successors, (533), 414 states have internal predecessors, (533), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 22:38:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 560 transitions. [2021-11-12 22:38:11,636 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 560 transitions. Word has length 48 [2021-11-12 22:38:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:11,636 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 560 transitions. [2021-11-12 22:38:11,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 560 transitions. [2021-11-12 22:38:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-12 22:38:11,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:11,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:11,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:11,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:11,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:11,877 INFO L85 PathProgramCache]: Analyzing trace with hash 844272943, now seen corresponding path program 1 times [2021-11-12 22:38:11,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:11,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957635579] [2021-11-12 22:38:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:11,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:11,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:11,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:11,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:38:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:12,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:38:12,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:12,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:12,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:12,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957635579] [2021-11-12 22:38:12,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957635579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:12,639 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:12,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 22:38:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390438617] [2021-11-12 22:38:12,640 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:38:12,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:38:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:12,641 INFO L87 Difference]: Start difference. First operand 427 states and 560 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:12,787 INFO L93 Difference]: Finished difference Result 643 states and 849 transitions. [2021-11-12 22:38:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-12 22:38:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:12,791 INFO L225 Difference]: With dead ends: 643 [2021-11-12 22:38:12,792 INFO L226 Difference]: Without dead ends: 421 [2021-11-12 22:38:12,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:12,794 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 270 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.95ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:12,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2108 Invalid, 69 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 115.95ms Time] [2021-11-12 22:38:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-12 22:38:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-12 22:38:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 403 states have (on average 1.2977667493796525) internal successors, (523), 408 states have internal predecessors, (523), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 22:38:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 550 transitions. [2021-11-12 22:38:12,815 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 550 transitions. Word has length 48 [2021-11-12 22:38:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:12,816 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 550 transitions. [2021-11-12 22:38:12,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 550 transitions. [2021-11-12 22:38:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-12 22:38:12,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:12,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:12,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 22:38:13,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:13,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:13,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:13,036 INFO L85 PathProgramCache]: Analyzing trace with hash -857755915, now seen corresponding path program 1 times [2021-11-12 22:38:13,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:13,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015485689] [2021-11-12 22:38:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:13,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:13,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:38:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:13,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:38:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:13,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:38:13,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:38:13,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:38:13,586 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 22:38:13,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 22:38:13,663 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 22:38:13,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 22:38:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:13,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:13,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:13,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015485689] [2021-11-12 22:38:13,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015485689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:13,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:13,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:38:13,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852347461] [2021-11-12 22:38:13,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:13,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:38:13,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:38:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:13,959 INFO L87 Difference]: Start difference. First operand 421 states and 550 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:21,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:38:23,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:38:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:28,894 INFO L93 Difference]: Finished difference Result 739 states and 967 transitions. [2021-11-12 22:38:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:38:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-12 22:38:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:28,899 INFO L225 Difference]: With dead ends: 739 [2021-11-12 22:38:28,900 INFO L226 Difference]: Without dead ends: 496 [2021-11-12 22:38:28,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:28,901 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 379 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14440.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.37ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14861.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:28,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1911 Invalid, 551 Unknown, 0 Unchecked, 10.37ms Time], IncrementalHoareTripleChecker [4 Valid, 545 Invalid, 2 Unknown, 0 Unchecked, 14861.17ms Time] [2021-11-12 22:38:28,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-12 22:38:28,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 423. [2021-11-12 22:38:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 405 states have (on average 1.2962962962962963) internal successors, (525), 410 states have internal predecessors, (525), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 22:38:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 552 transitions. [2021-11-12 22:38:28,923 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 552 transitions. Word has length 48 [2021-11-12 22:38:28,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:28,924 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 552 transitions. [2021-11-12 22:38:28,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 552 transitions. [2021-11-12 22:38:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 22:38:28,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:28,930 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:28,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:29,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1217730649, now seen corresponding path program 1 times [2021-11-12 22:38:29,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:29,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611881233] [2021-11-12 22:38:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:29,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:29,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:29,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:38:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:38:29,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:29,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:30,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:30,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611881233] [2021-11-12 22:38:30,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611881233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:30,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:30,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:38:30,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962652991] [2021-11-12 22:38:30,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:30,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:38:30,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:38:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:38:30,006 INFO L87 Difference]: Start difference. First operand 423 states and 552 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:30,155 INFO L93 Difference]: Finished difference Result 935 states and 1224 transitions. [2021-11-12 22:38:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:30,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-12 22:38:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:30,159 INFO L225 Difference]: With dead ends: 935 [2021-11-12 22:38:30,160 INFO L226 Difference]: Without dead ends: 516 [2021-11-12 22:38:30,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:30,162 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 488 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:30,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1525 Invalid, 69 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 107.21ms Time] [2021-11-12 22:38:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-12 22:38:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 426. [2021-11-12 22:38:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 408 states have (on average 1.2745098039215685) internal successors, (520), 413 states have internal predecessors, (520), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 22:38:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 547 transitions. [2021-11-12 22:38:30,198 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 547 transitions. Word has length 101 [2021-11-12 22:38:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:30,198 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 547 transitions. [2021-11-12 22:38:30,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 547 transitions. [2021-11-12 22:38:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 22:38:30,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:30,202 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:30,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 22:38:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:30,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash 893903923, now seen corresponding path program 1 times [2021-11-12 22:38:30,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:30,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784878495] [2021-11-12 22:38:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:30,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:30,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:30,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:30,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:38:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:30,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:38:30,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:31,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:31,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:31,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784878495] [2021-11-12 22:38:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784878495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:31,685 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:31,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:38:31,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814719172] [2021-11-12 22:38:31,686 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:31,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:38:31,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:38:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:38:31,688 INFO L87 Difference]: Start difference. First operand 426 states and 547 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:32,616 INFO L93 Difference]: Finished difference Result 1075 states and 1384 transitions. [2021-11-12 22:38:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:38:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-12 22:38:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:32,622 INFO L225 Difference]: With dead ends: 1075 [2021-11-12 22:38:32,622 INFO L226 Difference]: Without dead ends: 653 [2021-11-12 22:38:32,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:38:32,624 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 245 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 856.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 896.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:32,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1179 Invalid, 22 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 896.29ms Time] [2021-11-12 22:38:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-12 22:38:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2021-11-12 22:38:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 626 states have (on average 1.2747603833865815) internal successors, (798), 631 states have internal predecessors, (798), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-12 22:38:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 835 transitions. [2021-11-12 22:38:32,652 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 835 transitions. Word has length 101 [2021-11-12 22:38:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:32,653 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 835 transitions. [2021-11-12 22:38:32,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 835 transitions. [2021-11-12 22:38:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:38:32,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:32,655 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:32,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:32,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:32,871 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1884551189, now seen corresponding path program 1 times [2021-11-12 22:38:32,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:32,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326870925] [2021-11-12 22:38:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:32,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:32,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:32,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:32,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:38:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:33,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:38:33,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:33,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:38:33,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:33,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326870925] [2021-11-12 22:38:33,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326870925] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:33,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:38:33,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 22:38:33,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549524475] [2021-11-12 22:38:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:33,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:38:33,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:38:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:33,817 INFO L87 Difference]: Start difference. First operand 649 states and 835 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:38:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:33,909 INFO L93 Difference]: Finished difference Result 1253 states and 1619 transitions. [2021-11-12 22:38:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:33,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 116 [2021-11-12 22:38:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:33,915 INFO L225 Difference]: With dead ends: 1253 [2021-11-12 22:38:33,916 INFO L226 Difference]: Without dead ends: 652 [2021-11-12 22:38:33,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:33,918 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 2 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.69ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:33,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1598 Invalid, 21 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 51.69ms Time] [2021-11-12 22:38:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-12 22:38:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-12 22:38:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 628 states have (on average 1.2754777070063694) internal successors, (801), 634 states have internal predecessors, (801), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-12 22:38:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 841 transitions. [2021-11-12 22:38:33,947 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 841 transitions. Word has length 116 [2021-11-12 22:38:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:33,947 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 841 transitions. [2021-11-12 22:38:33,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:38:33,948 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 841 transitions. [2021-11-12 22:38:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 22:38:33,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:33,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:33,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:34,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:34,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash -362072013, now seen corresponding path program 1 times [2021-11-12 22:38:34,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:34,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587374524] [2021-11-12 22:38:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:34,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:34,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:34,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:34,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:38:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:34,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:38:34,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:38:34,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:38:35,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:35,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587374524] [2021-11-12 22:38:35,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587374524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:35,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [276525146] [2021-11-12 22:38:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:35,110 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:38:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:38:35,115 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:38:35,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 22:38:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:38:35,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:38:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:38:36,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [276525146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:36,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272484322] [2021-11-12 22:38:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:36,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:36,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:36,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 22:38:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:36,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:38:36,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:38:36,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:38:37,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272484322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:37,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:38:37,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-12 22:38:37,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260372214] [2021-11-12 22:38:37,029 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:37,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:38:37,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:38:37,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:38:37,032 INFO L87 Difference]: Start difference. First operand 652 states and 841 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:38:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:37,610 INFO L93 Difference]: Finished difference Result 1271 states and 1657 transitions. [2021-11-12 22:38:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:38:37,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 118 [2021-11-12 22:38:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:37,616 INFO L225 Difference]: With dead ends: 1271 [2021-11-12 22:38:37,616 INFO L226 Difference]: Without dead ends: 667 [2021-11-12 22:38:37,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-12 22:38:37,619 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 36 mSDsluCounter, 4207 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4740 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.29ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 302.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:37,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 4740 Invalid, 163 Unknown, 0 Unchecked, 12.29ms Time], IncrementalHoareTripleChecker [28 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 302.56ms Time] [2021-11-12 22:38:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-12 22:38:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2021-11-12 22:38:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 638 states have (on average 1.2836990595611286) internal successors, (819), 644 states have internal predecessors, (819), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-12 22:38:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 859 transitions. [2021-11-12 22:38:37,652 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 859 transitions. Word has length 118 [2021-11-12 22:38:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:37,653 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 859 transitions. [2021-11-12 22:38:37,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:38:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 859 transitions. [2021-11-12 22:38:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-12 22:38:37,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:37,656 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:37,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:37,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:38,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:38,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:38,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1311441259, now seen corresponding path program 2 times [2021-11-12 22:38:38,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:38,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389983894] [2021-11-12 22:38:38,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:38:38,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:38,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:38,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:38,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:38:38,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:38:38,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:38,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:38:38,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:38:39,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:38:39,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:39,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389983894] [2021-11-12 22:38:39,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389983894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:39,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2061478019] [2021-11-12 22:38:39,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:38:39,420 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:38:39,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:38:39,421 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:38:39,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 22:38:39,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:38:39,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:39,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:38:39,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:38:40,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:38:40,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2061478019] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:40,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353456802] [2021-11-12 22:38:40,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:38:40,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:40,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:40,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:40,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 22:38:40,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:38:40,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:40,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:38:40,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:38:41,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:38:41,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353456802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:41,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:38:41,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-12 22:38:41,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122996389] [2021-11-12 22:38:41,762 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:41,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 22:38:41,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:41,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 22:38:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:38:41,765 INFO L87 Difference]: Start difference. First operand 663 states and 859 transitions. Second operand has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:38:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:43,049 INFO L93 Difference]: Finished difference Result 1297 states and 1696 transitions. [2021-11-12 22:38:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 22:38:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-11-12 22:38:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:43,054 INFO L225 Difference]: With dead ends: 1297 [2021-11-12 22:38:43,055 INFO L226 Difference]: Without dead ends: 676 [2021-11-12 22:38:43,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 22:38:43,058 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 59 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 566.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 632.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:43,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 3731 Invalid, 346 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [70 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 632.15ms Time] [2021-11-12 22:38:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-12 22:38:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 670. [2021-11-12 22:38:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 645 states have (on average 1.2806201550387597) internal successors, (826), 651 states have internal predecessors, (826), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-12 22:38:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 866 transitions. [2021-11-12 22:38:43,087 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 866 transitions. Word has length 124 [2021-11-12 22:38:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:43,088 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 866 transitions. [2021-11-12 22:38:43,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:38:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 866 transitions. [2021-11-12 22:38:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-12 22:38:43,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:43,090 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:43,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:43,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:43,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:43,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:43,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:43,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1957809, now seen corresponding path program 3 times [2021-11-12 22:38:43,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:43,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817649957] [2021-11-12 22:38:43,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:43,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:43,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:43,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1a25c1-a090-4c32-99c3-bcd7a8b1092e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:38:44,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-12 22:38:44,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:44,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:38:44,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:44,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:38:44,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:38:44,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:38:44,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:38:44,548 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 22:38:44,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 22:38:44,685 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:38:44,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17