./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c --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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:13,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:13,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:13,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:13,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:13,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:13,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:13,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:13,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:13,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:13,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:13,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:13,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:13,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:13,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:13,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:13,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:13,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:13,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:13,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:13,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:13,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:13,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:13,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:13,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:13,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:13,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:13,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:13,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:13,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:13,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:13,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:13,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:13,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:13,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:13,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:13,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:13,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:13,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:13,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:13,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:13,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:42:13,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:13,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:13,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:13,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:13,786 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:13,786 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:13,786 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:13,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:42:13,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:13,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:13,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:42:13,787 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:42:13,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:13,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:42:13,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:42:13,792 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:42:13,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:13,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:42:13,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:42:13,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:42:13,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:13,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:42:13,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:13,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:42:13,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:13,794 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:42:13,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:42:13,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:13,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:42:13,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:13,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:13,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:13,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:13,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:13,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:42:13,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:42:13,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:42:13,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:42:13,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:13,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:13,800 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-12 23:42:14,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:14,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:14,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:14,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:14,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:14,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-12 23:42:14,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/24239ab19/89cf2d9743624060988f152313b51f74/FLAG1aa524828 [2021-11-12 23:42:14,770 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:14,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-12 23:42:14,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/24239ab19/89cf2d9743624060988f152313b51f74/FLAG1aa524828 [2021-11-12 23:42:15,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/24239ab19/89cf2d9743624060988f152313b51f74 [2021-11-12 23:42:15,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:15,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:15,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:15,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:15,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:15,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:15" (1/1) ... [2021-11-12 23:42:15,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@948ea25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:15, skipping insertion in model container [2021-11-12 23:42:15,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:15" (1/1) ... [2021-11-12 23:42:15,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:15,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:15,389 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-12 23:42:15,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:15,895 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 23:42:15,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c63542d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:15, skipping insertion in model container [2021-11-12 23:42:15,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:15,897 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:42:15,899 INFO L158 Benchmark]: Toolchain (without parser) took 875.52ms. Allocated memory is still 132.1MB. Free memory was 94.5MB in the beginning and 92.3MB in the end (delta: 2.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:42:15,901 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:42:15,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 872.92ms. Allocated memory is still 132.1MB. Free memory was 94.3MB in the beginning and 92.3MB in the end (delta: 2.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:42:15,905 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 88.1MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 872.92ms. Allocated memory is still 132.1MB. Free memory was 94.3MB in the beginning and 92.3MB in the end (delta: 2.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1419]: 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:18,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:18,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:18,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:18,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:18,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:18,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:18,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:18,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:18,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:18,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:18,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:18,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:18,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:18,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:18,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:18,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:18,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:18,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:18,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:18,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:18,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:18,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:18,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:18,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:18,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:18,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:18,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:18,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:18,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:18,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:18,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:18,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:18,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:18,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:18,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:18,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:18,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:18,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:18,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:18,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:18,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:42:18,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:18,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:18,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:18,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:18,263 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:18,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:18,264 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:18,264 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:18,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:18,265 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:18,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:18,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:42:18,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:42:18,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:18,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:42:18,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:18,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:42:18,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:18,269 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:42:18,269 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:42:18,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:42:18,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:42:18,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:18,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:42:18,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:18,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:42:18,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:18,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:18,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:18,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:18,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:42:18,274 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:42:18,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:18,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:42:18,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:18,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:18,275 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-12 23:42:18,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:18,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:18,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:18,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:18,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:18,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-12 23:42:18,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/1da3da4ed/d7fa934819e74cadb51c0903705a3d5e/FLAG5116907b4 [2021-11-12 23:42:19,529 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:19,530 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-12 23:42:19,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/1da3da4ed/d7fa934819e74cadb51c0903705a3d5e/FLAG5116907b4 [2021-11-12 23:42:19,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/data/1da3da4ed/d7fa934819e74cadb51c0903705a3d5e [2021-11-12 23:42:19,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:19,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:19,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:19,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:19,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:19,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:19" (1/1) ... [2021-11-12 23:42:19,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9eb62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:19, skipping insertion in model container [2021-11-12 23:42:19,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:19" (1/1) ... [2021-11-12 23:42:19,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:19,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:19,990 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-12 23:42:20,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:20,381 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:42:20,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:20,400 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-12 23:42:20,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:20,564 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:42:20,577 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_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-12 23:42:20,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:20,690 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:42:20,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20 WrapperNode [2021-11-12 23:42:20,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:20,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:20,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:42:20,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:42:20,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:20,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:42:20,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:42:20,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:42:20,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:20,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:21,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:21,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:42:21,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:42:21,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:42:21,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:42:21,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (1/1) ... [2021-11-12 23:42:21,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:42:21,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:42:21,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:42:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-12 23:42:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-12 23:42:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-12 23:42:21,137 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-12 23:42:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:42:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-12 23:42:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-12 23:42:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-12 23:42:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-12 23:42:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-12 23:42:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-12 23:42:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-11-12 23:42:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-11-12 23:42:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-12 23:42:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-12 23:42:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-12 23:42:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-12 23:42:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-12 23:42:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-12 23:42:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-12 23:42:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-12 23:42:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-12 23:42:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-12 23:42:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-12 23:42:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-12 23:42:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:42:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-12 23:42:21,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-12 23:42:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-12 23:42:21,142 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-12 23:42:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-12 23:42:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-12 23:42:21,143 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-12 23:42:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-12 23:42:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-12 23:42:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-12 23:42:21,144 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-12 23:42:21,144 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-12 23:42:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2021-11-12 23:42:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2021-11-12 23:42:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-12 23:42:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-12 23:42:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-12 23:42:21,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-12 23:42:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-12 23:42:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-12 23:42:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-12 23:42:21,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-12 23:42:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:42:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:42:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-12 23:42:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-12 23:42:25,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:42:25,125 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:42:25,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:25 BoogieIcfgContainer [2021-11-12 23:42:25,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:42:25,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:42:25,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:42:25,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:42:25,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:42:19" (1/3) ... [2021-11-12 23:42:25,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bdb33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:25, skipping insertion in model container [2021-11-12 23:42:25,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:20" (2/3) ... [2021-11-12 23:42:25,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bdb33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:25, skipping insertion in model container [2021-11-12 23:42:25,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:25" (3/3) ... [2021-11-12 23:42:25,139 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2021-11-12 23:42:25,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:42:25,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:42:25,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:42:25,230 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 23:42:25,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:42:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-12 23:42:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 23:42:25,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:25,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:25,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1610874664, now seen corresponding path program 1 times [2021-11-12 23:42:25,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:25,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128049429] [2021-11-12 23:42:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:25,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:25,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:25,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:25,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:42:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:26,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:42:26,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:26,255 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 23:42:26,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:26,494 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 23:42:26,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:26,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128049429] [2021-11-12 23:42:26,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128049429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:26,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:26,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:42:26,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672062077] [2021-11-12 23:42:26,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:26,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:42:26,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:42:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:42:26,542 INFO L87 Difference]: Start difference. First operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-12 23:42:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:26,661 INFO L93 Difference]: Finished difference Result 584 states and 970 transitions. [2021-11-12 23:42:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:42:26,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 90 [2021-11-12 23:42:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:26,691 INFO L225 Difference]: With dead ends: 584 [2021-11-12 23:42:26,691 INFO L226 Difference]: Without dead ends: 555 [2021-11-12 23:42:26,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 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 23:42:26,705 INFO L933 BasicCegarLoop]: 931 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, 931 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:26,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 16.99ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:42:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-12 23:42:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-12 23:42:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6970387243735763) internal successors, (745), 458 states have internal predecessors, (745), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-12 23:42:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 924 transitions. [2021-11-12 23:42:26,838 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 924 transitions. Word has length 90 [2021-11-12 23:42:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:26,840 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 924 transitions. [2021-11-12 23:42:26,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-12 23:42:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 924 transitions. [2021-11-12 23:42:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 23:42:26,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:26,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:26,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:27,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:27,065 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1312643929, now seen corresponding path program 1 times [2021-11-12 23:42:27,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:27,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958807975] [2021-11-12 23:42:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:27,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:27,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:27,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:42:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:27,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:27,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:28,008 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 23:42:28,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:28,324 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 23:42:28,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:28,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958807975] [2021-11-12 23:42:28,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958807975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:28,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:28,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:42:28,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966539709] [2021-11-12 23:42:28,330 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:28,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:42:28,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:42:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:42:28,334 INFO L87 Difference]: Start difference. First operand 555 states and 924 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:42:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:28,487 INFO L93 Difference]: Finished difference Result 1094 states and 1826 transitions. [2021-11-12 23:42:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:42:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 92 [2021-11-12 23:42:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:28,496 INFO L225 Difference]: With dead ends: 1094 [2021-11-12 23:42:28,496 INFO L226 Difference]: Without dead ends: 555 [2021-11-12 23:42:28,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:28,506 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 30 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.59ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:28,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2729 Invalid, 41 Unknown, 0 Unchecked, 17.59ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 42.23ms Time] [2021-11-12 23:42:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-12 23:42:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-12 23:42:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.683371298405467) internal successors, (739), 458 states have internal predecessors, (739), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-12 23:42:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 918 transitions. [2021-11-12 23:42:28,551 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 918 transitions. Word has length 92 [2021-11-12 23:42:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:28,552 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 918 transitions. [2021-11-12 23:42:28,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:42:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 918 transitions. [2021-11-12 23:42:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 23:42:28,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:28,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:28,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:28,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:28,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 803133512, now seen corresponding path program 1 times [2021-11-12 23:42:28,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:28,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133657384] [2021-11-12 23:42:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:28,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:28,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:28,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:42:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:29,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:42:29,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:29,656 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 23:42:29,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:30,035 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 23:42:30,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:30,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133657384] [2021-11-12 23:42:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133657384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:30,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:30,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-12 23:42:30,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377690100] [2021-11-12 23:42:30,036 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:30,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:42:30,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:30,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:42:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:42:30,038 INFO L87 Difference]: Start difference. First operand 555 states and 918 transitions. Second operand has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:42:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:30,253 INFO L93 Difference]: Finished difference Result 1052 states and 1743 transitions. [2021-11-12 23:42:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:42:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 97 [2021-11-12 23:42:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:30,261 INFO L225 Difference]: With dead ends: 1052 [2021-11-12 23:42:30,261 INFO L226 Difference]: Without dead ends: 549 [2021-11-12 23:42:30,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:42:30,265 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 194 mSDsluCounter, 6239 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 7144 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:30,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 7144 Invalid, 95 Unknown, 0 Unchecked, 17.57ms Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 116.16ms Time] [2021-11-12 23:42:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-12 23:42:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-11-12 23:42:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 433 states have (on average 1.6766743648960738) internal successors, (726), 452 states have internal predecessors, (726), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-12 23:42:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 905 transitions. [2021-11-12 23:42:30,294 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 905 transitions. Word has length 97 [2021-11-12 23:42:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:30,295 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 905 transitions. [2021-11-12 23:42:30,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:42:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 905 transitions. [2021-11-12 23:42:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 23:42:30,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:30,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:30,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:30,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:30,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1829178420, now seen corresponding path program 1 times [2021-11-12 23:42:30,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:30,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395062296] [2021-11-12 23:42:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:30,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:30,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:30,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:42:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:31,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:31,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:31,302 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 23:42:31,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:31,616 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 23:42:31,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:31,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395062296] [2021-11-12 23:42:31,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395062296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:31,617 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:31,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:42:31,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414056316] [2021-11-12 23:42:31,617 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:42:31,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:42:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:42:31,619 INFO L87 Difference]: Start difference. First operand 549 states and 905 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:42:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:31,823 INFO L93 Difference]: Finished difference Result 1055 states and 1744 transitions. [2021-11-12 23:42:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:42:31,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 98 [2021-11-12 23:42:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:31,830 INFO L225 Difference]: With dead ends: 1055 [2021-11-12 23:42:31,830 INFO L226 Difference]: Without dead ends: 549 [2021-11-12 23:42:31,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:31,840 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 206 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:31,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 1732 Invalid, 144 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [23 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 143.67ms Time] [2021-11-12 23:42:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-12 23:42:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-11-12 23:42:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 433 states have (on average 1.6212471131639723) internal successors, (702), 452 states have internal predecessors, (702), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-12 23:42:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 881 transitions. [2021-11-12 23:42:31,875 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 881 transitions. Word has length 98 [2021-11-12 23:42:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:31,875 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 881 transitions. [2021-11-12 23:42:31,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:42:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 881 transitions. [2021-11-12 23:42:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:42:31,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:31,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:31,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:32,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:32,106 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -710022503, now seen corresponding path program 1 times [2021-11-12 23:42:32,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:32,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775680932] [2021-11-12 23:42:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:32,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:32,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:32,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:42:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:32,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:42:32,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:32,972 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 23:42:32,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:33,329 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 23:42:33,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:33,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775680932] [2021-11-12 23:42:33,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775680932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:33,330 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:33,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-12 23:42:33,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954384547] [2021-11-12 23:42:33,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:33,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:42:33,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:33,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:42:33,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:33,332 INFO L87 Difference]: Start difference. First operand 549 states and 881 transitions. Second operand has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-12 23:42:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:33,481 INFO L93 Difference]: Finished difference Result 1046 states and 1706 transitions. [2021-11-12 23:42:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:42:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 100 [2021-11-12 23:42:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:33,488 INFO L225 Difference]: With dead ends: 1046 [2021-11-12 23:42:33,488 INFO L226 Difference]: Without dead ends: 528 [2021-11-12 23:42:33,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:42:33,492 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 147 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.35ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:33,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 4320 Invalid, 54 Unknown, 0 Unchecked, 10.04ms Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 66.35ms Time] [2021-11-12 23:42:33,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-12 23:42:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-11-12 23:42:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 412 states have (on average 1.6432038834951457) internal successors, (677), 431 states have internal predecessors, (677), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-12 23:42:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 856 transitions. [2021-11-12 23:42:33,522 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 856 transitions. Word has length 100 [2021-11-12 23:42:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:33,523 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 856 transitions. [2021-11-12 23:42:33,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-12 23:42:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 856 transitions. [2021-11-12 23:42:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-12 23:42:33,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:33,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:33,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:33,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 145920181, now seen corresponding path program 1 times [2021-11-12 23:42:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:33,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023069917] [2021-11-12 23:42:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:33,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:33,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:33,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:33,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:42:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:34,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:42:34,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:34,550 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 23:42:34,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:35,099 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 23:42:35,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:35,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023069917] [2021-11-12 23:42:35,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023069917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:35,100 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:35,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-12 23:42:35,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377439056] [2021-11-12 23:42:35,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:35,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:42:35,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:42:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:42:35,102 INFO L87 Difference]: Start difference. First operand 528 states and 856 transitions. Second operand has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:42:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:35,302 INFO L93 Difference]: Finished difference Result 1019 states and 1670 transitions. [2021-11-12 23:42:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:35,302 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 103 [2021-11-12 23:42:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:35,308 INFO L225 Difference]: With dead ends: 1019 [2021-11-12 23:42:35,308 INFO L226 Difference]: Without dead ends: 528 [2021-11-12 23:42:35,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:42:35,312 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 59 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6707 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:35,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 6707 Invalid, 107 Unknown, 0 Unchecked, 11.99ms Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 116.50ms Time] [2021-11-12 23:42:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-12 23:42:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-11-12 23:42:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 412 states have (on average 1.6407766990291262) internal successors, (676), 431 states have internal predecessors, (676), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-12 23:42:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 855 transitions. [2021-11-12 23:42:35,336 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 855 transitions. Word has length 103 [2021-11-12 23:42:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:35,337 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 855 transitions. [2021-11-12 23:42:35,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:42:35,337 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 855 transitions. [2021-11-12 23:42:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-12 23:42:35,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:35,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:35,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:35,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:35,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1920540339, now seen corresponding path program 1 times [2021-11-12 23:42:35,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:35,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579041243] [2021-11-12 23:42:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:35,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:35,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:35,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:35,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:42:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:36,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:42:36,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:36,591 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 23:42:36,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:37,363 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 23:42:37,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:37,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579041243] [2021-11-12 23:42:37,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579041243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:37,364 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:37,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-12 23:42:37,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580862851] [2021-11-12 23:42:37,364 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:37,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:42:37,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:42:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:42:37,366 INFO L87 Difference]: Start difference. First operand 528 states and 855 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-12 23:42:39,396 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 23:42:41,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:43,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:45,413 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 23:42:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:49,727 INFO L93 Difference]: Finished difference Result 1140 states and 1899 transitions. [2021-11-12 23:42:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:42:49,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 104 [2021-11-12 23:42:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:49,734 INFO L225 Difference]: With dead ends: 1140 [2021-11-12 23:42:49,734 INFO L226 Difference]: Without dead ends: 657 [2021-11-12 23:42:49,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:42:49,738 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 2076 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 3414 mSolverCounterSat, 677 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11477.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.41ms SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 3414 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12142.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:49,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2076 Valid, 2696 Invalid, 4095 Unknown, 0 Unchecked, 31.41ms Time], IncrementalHoareTripleChecker [677 Valid, 3414 Invalid, 4 Unknown, 0 Unchecked, 12142.59ms Time] [2021-11-12 23:42:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-12 23:42:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 532. [2021-11-12 23:42:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 415 states have (on average 1.636144578313253) internal successors, (679), 434 states have internal predecessors, (679), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (103), 86 states have call predecessors, (103), 87 states have call successors, (103) [2021-11-12 23:42:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 874 transitions. [2021-11-12 23:42:49,775 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 874 transitions. Word has length 104 [2021-11-12 23:42:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:49,776 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 874 transitions. [2021-11-12 23:42:49,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-12 23:42:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 874 transitions. [2021-11-12 23:42:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 23:42:49,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:49,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:49,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:49,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:49,995 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1056707900, now seen corresponding path program 1 times [2021-11-12 23:42:49,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:49,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631441785] [2021-11-12 23:42:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:49,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:49,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:42:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:50,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:42:50,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:50,783 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 23:42:50,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:51,340 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 23:42:51,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:51,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631441785] [2021-11-12 23:42:51,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631441785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:51,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:51,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-12 23:42:51,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027106141] [2021-11-12 23:42:51,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:51,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:42:51,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:42:51,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:42:51,344 INFO L87 Difference]: Start difference. First operand 532 states and 874 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-12 23:42:53,374 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 23:42:55,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:57,388 WARN L515 Checker$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 23:43:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:04,365 INFO L93 Difference]: Finished difference Result 1927 states and 3289 transitions. [2021-11-12 23:43:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:43:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 105 [2021-11-12 23:43:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:04,380 INFO L225 Difference]: With dead ends: 1927 [2021-11-12 23:43:04,380 INFO L226 Difference]: Without dead ends: 1440 [2021-11-12 23:43:04,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:43:04,413 INFO L933 BasicCegarLoop]: 1406 mSDtfsCounter, 3014 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 5260 mSolverCounterSat, 849 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11641.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 6112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.31ms SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 5260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12577.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:04,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 3751 Invalid, 6112 Unknown, 0 Unchecked, 42.31ms Time], IncrementalHoareTripleChecker [849 Valid, 5260 Invalid, 3 Unknown, 0 Unchecked, 12577.89ms Time] [2021-11-12 23:43:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-12 23:43:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1349. [2021-11-12 23:43:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1048 states have (on average 1.6469465648854962) internal successors, (1726), 1096 states have internal predecessors, (1726), 236 states have call successors, (236), 63 states have call predecessors, (236), 64 states have return successors, (260), 226 states have call predecessors, (260), 231 states have call successors, (260) [2021-11-12 23:43:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2222 transitions. [2021-11-12 23:43:04,551 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2222 transitions. Word has length 105 [2021-11-12 23:43:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:04,552 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 2222 transitions. [2021-11-12 23:43:04,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-12 23:43:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2222 transitions. [2021-11-12 23:43:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:43:04,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:04,556 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:43:04,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:04,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:04,771 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash 555859701, now seen corresponding path program 1 times [2021-11-12 23:43:04,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:04,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921400386] [2021-11-12 23:43:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:04,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:04,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:04,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:04,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:43:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:05,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:43:05,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-12 23:43:07,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-12 23:43:10,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:10,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921400386] [2021-11-12 23:43:10,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921400386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:10,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:10,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-12 23:43:10,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556928701] [2021-11-12 23:43:10,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:10,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:43:10,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:43:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:43:10,662 INFO L87 Difference]: Start difference. First operand 1349 states and 2222 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-12 23:43:12,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:14,694 WARN L515 Checker$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 23:43:16,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:18,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:38,700 INFO L93 Difference]: Finished difference Result 4497 states and 7540 transitions. [2021-11-12 23:43:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:43:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 107 [2021-11-12 23:43:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:38,759 INFO L225 Difference]: With dead ends: 4497 [2021-11-12 23:43:38,759 INFO L226 Difference]: Without dead ends: 3193 [2021-11-12 23:43:38,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:43:38,771 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 2975 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 4615 mSolverCounterSat, 759 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24211.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.77ms SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 4615 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27467.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:38,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3041 Valid, 2612 Invalid, 5378 Unknown, 0 Unchecked, 33.77ms Time], IncrementalHoareTripleChecker [759 Valid, 4615 Invalid, 4 Unknown, 0 Unchecked, 27467.83ms Time] [2021-11-12 23:43:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-11-12 23:43:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2805. [2021-11-12 23:43:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2155 states have (on average 1.651508120649652) internal successors, (3559), 2253 states have internal predecessors, (3559), 533 states have call successors, (533), 111 states have call predecessors, (533), 116 states have return successors, (590), 499 states have call predecessors, (590), 528 states have call successors, (590) [2021-11-12 23:43:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4682 transitions. [2021-11-12 23:43:38,991 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4682 transitions. Word has length 107 [2021-11-12 23:43:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:38,992 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 4682 transitions. [2021-11-12 23:43:38,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-12 23:43:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4682 transitions. [2021-11-12 23:43:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-12 23:43:39,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:39,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:39,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:39,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:39,234 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1973312039, now seen corresponding path program 1 times [2021-11-12 23:43:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524134905] [2021-11-12 23:43:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:39,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:39,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:39,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:39,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:43:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:39,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:43:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:40,092 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 23:43:40,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:40,644 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 23:43:40,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:40,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524134905] [2021-11-12 23:43:40,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524134905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:40,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:40,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-12 23:43:40,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465515493] [2021-11-12 23:43:40,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:40,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:43:40,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:43:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:43:40,646 INFO L87 Difference]: Start difference. First operand 2805 states and 4682 transitions. Second operand has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:43:42,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:44,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:46,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:48,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:59,196 INFO L93 Difference]: Finished difference Result 10264 states and 17701 transitions. [2021-11-12 23:43:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:43:59,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) Word has length 111 [2021-11-12 23:43:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:59,274 INFO L225 Difference]: With dead ends: 10264 [2021-11-12 23:43:59,275 INFO L226 Difference]: Without dead ends: 7504 [2021-11-12 23:43:59,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:43:59,301 INFO L933 BasicCegarLoop]: 1864 mSDtfsCounter, 5863 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 7755 mSolverCounterSat, 2654 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16458.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5958 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 10413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.03ms SdHoareTripleChecker+Time, 2654 IncrementalHoareTripleChecker+Valid, 7755 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17797.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:59,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5958 Valid, 4982 Invalid, 10413 Unknown, 0 Unchecked, 50.03ms Time], IncrementalHoareTripleChecker [2654 Valid, 7755 Invalid, 4 Unknown, 0 Unchecked, 17797.89ms Time] [2021-11-12 23:43:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2021-11-12 23:43:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 4726. [2021-11-12 23:43:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4726 states, 3501 states have (on average 1.6312482147957725) internal successors, (5711), 3709 states have internal predecessors, (5711), 1025 states have call successors, (1025), 169 states have call predecessors, (1025), 199 states have return successors, (1206), 1001 states have call predecessors, (1206), 1020 states have call successors, (1206) [2021-11-12 23:43:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 7942 transitions. [2021-11-12 23:43:59,863 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 7942 transitions. Word has length 111 [2021-11-12 23:43:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:59,864 INFO L470 AbstractCegarLoop]: Abstraction has 4726 states and 7942 transitions. [2021-11-12 23:43:59,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:43:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 7942 transitions. [2021-11-12 23:43:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 23:43:59,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:59,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:59,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:00,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:00,090 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:00,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1159195709, now seen corresponding path program 1 times [2021-11-12 23:44:00,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:00,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811287230] [2021-11-12 23:44:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:00,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:00,092 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:00,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:44:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:00,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:44:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:00,916 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 23:44:00,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:01,321 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 23:44:01,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:01,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811287230] [2021-11-12 23:44:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811287230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:01,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:01,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:44:01,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959960945] [2021-11-12 23:44:01,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:01,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:44:01,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:44:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:44:01,324 INFO L87 Difference]: Start difference. First operand 4726 states and 7942 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:03,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:05,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:10,302 INFO L93 Difference]: Finished difference Result 16446 states and 28496 transitions. [2021-11-12 23:44:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:44:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 112 [2021-11-12 23:44:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:10,409 INFO L225 Difference]: With dead ends: 16446 [2021-11-12 23:44:10,409 INFO L226 Difference]: Without dead ends: 11768 [2021-11-12 23:44:10,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:44:10,445 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 3022 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 1016 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7534.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 4235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.18ms SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8178.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:10,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3116 Valid, 3018 Invalid, 4235 Unknown, 0 Unchecked, 21.18ms Time], IncrementalHoareTripleChecker [1016 Valid, 3217 Invalid, 2 Unknown, 0 Unchecked, 8178.02ms Time] [2021-11-12 23:44:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2021-11-12 23:44:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 9651. [2021-11-12 23:44:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9651 states, 6776 states have (on average 1.6111275088547816) internal successors, (10917), 7290 states have internal predecessors, (10917), 2508 states have call successors, (2508), 285 states have call predecessors, (2508), 366 states have return successors, (3092), 2504 states have call predecessors, (3092), 2503 states have call successors, (3092) [2021-11-12 23:44:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9651 states to 9651 states and 16517 transitions. [2021-11-12 23:44:11,695 INFO L78 Accepts]: Start accepts. Automaton has 9651 states and 16517 transitions. Word has length 112 [2021-11-12 23:44:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:11,696 INFO L470 AbstractCegarLoop]: Abstraction has 9651 states and 16517 transitions. [2021-11-12 23:44:11,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9651 states and 16517 transitions. [2021-11-12 23:44:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 23:44:11,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:11,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:11,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:11,920 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1569370538, now seen corresponding path program 1 times [2021-11-12 23:44:11,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:11,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215938989] [2021-11-12 23:44:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:11,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:11,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:11,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:44:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:12,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:44:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:12,814 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 23:44:12,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:13,236 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 23:44:13,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:13,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215938989] [2021-11-12 23:44:13,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215938989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:13,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:13,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:44:13,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407769701] [2021-11-12 23:44:13,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:13,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:44:13,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:44:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:44:13,239 INFO L87 Difference]: Start difference. First operand 9651 states and 16517 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:15,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:17,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:19,291 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 23:44:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:25,490 INFO L93 Difference]: Finished difference Result 38233 states and 67765 transitions. [2021-11-12 23:44:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:44:25,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 113 [2021-11-12 23:44:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:25,712 INFO L225 Difference]: With dead ends: 38233 [2021-11-12 23:44:25,712 INFO L226 Difference]: Without dead ends: 28632 [2021-11-12 23:44:25,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:44:25,774 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 3121 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 1095 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9522.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 4428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.85ms SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10107.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:25,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3216 Valid, 3209 Invalid, 4428 Unknown, 0 Unchecked, 20.85ms Time], IncrementalHoareTripleChecker [1095 Valid, 3330 Invalid, 3 Unknown, 0 Unchecked, 10107.42ms Time] [2021-11-12 23:44:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28632 states. [2021-11-12 23:44:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28632 to 23712. [2021-11-12 23:44:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23712 states, 15670 states have (on average 1.5899170389278876) internal successors, (24914), 17105 states have internal predecessors, (24914), 7289 states have call successors, (7289), 517 states have call predecessors, (7289), 752 states have return successors, (9484), 7373 states have call predecessors, (9484), 7284 states have call successors, (9484) [2021-11-12 23:44:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23712 states to 23712 states and 41687 transitions. [2021-11-12 23:44:28,535 INFO L78 Accepts]: Start accepts. Automaton has 23712 states and 41687 transitions. Word has length 113 [2021-11-12 23:44:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 23712 states and 41687 transitions. [2021-11-12 23:44:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23712 states and 41687 transitions. [2021-11-12 23:44:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-12 23:44:28,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:28,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:28,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:28,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:28,762 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1630316254, now seen corresponding path program 1 times [2021-11-12 23:44:28,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:28,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537378057] [2021-11-12 23:44:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:28,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:28,765 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:28,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:44:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:29,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:44:29,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:29,720 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 23:44:29,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:30,115 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 23:44:30,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:30,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537378057] [2021-11-12 23:44:30,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537378057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:30,116 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:30,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:44:30,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079648149] [2021-11-12 23:44:30,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:30,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:44:30,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:44:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:44:30,118 INFO L87 Difference]: Start difference. First operand 23712 states and 41687 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:32,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:34,145 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 23:44:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:45,335 INFO L93 Difference]: Finished difference Result 104130 states and 189491 transitions. [2021-11-12 23:44:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:44:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) Word has length 114 [2021-11-12 23:44:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:46,221 INFO L225 Difference]: With dead ends: 104130 [2021-11-12 23:44:46,221 INFO L226 Difference]: Without dead ends: 80472 [2021-11-12 23:44:46,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:44:46,369 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 3502 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 1121 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7319.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3598 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.91ms SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7839.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:46,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3598 Valid, 3008 Invalid, 3774 Unknown, 0 Unchecked, 18.91ms Time], IncrementalHoareTripleChecker [1121 Valid, 2651 Invalid, 2 Unknown, 0 Unchecked, 7839.71ms Time] [2021-11-12 23:44:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80472 states. [2021-11-12 23:44:54,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80472 to 67425. [2021-11-12 23:44:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67425 states, 42348 states have (on average 1.5725654104089921) internal successors, (66595), 46704 states have internal predecessors, (66595), 23350 states have call successors, (23350), 981 states have call predecessors, (23350), 1726 states have return successors, (32258), 23802 states have call predecessors, (32258), 23345 states have call successors, (32258) [2021-11-12 23:44:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67425 states to 67425 states and 122203 transitions. [2021-11-12 23:44:55,244 INFO L78 Accepts]: Start accepts. Automaton has 67425 states and 122203 transitions. Word has length 114 [2021-11-12 23:44:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:55,245 INFO L470 AbstractCegarLoop]: Abstraction has 67425 states and 122203 transitions. [2021-11-12 23:44:55,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 67425 states and 122203 transitions. [2021-11-12 23:44:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 23:44:55,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:55,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:55,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:55,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:55,468 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash -771596305, now seen corresponding path program 1 times [2021-11-12 23:44:55,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:55,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644811975] [2021-11-12 23:44:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:55,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:55,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:55,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b308c7e5-4aaf-4d97-a0dd-165db60cbcb0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:44:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:56,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:44:56,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:56,412 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 23:44:56,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:56,833 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 23:44:56,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:56,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644811975] [2021-11-12 23:44:56,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644811975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:56,834 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:56,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:44:56,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665142821] [2021-11-12 23:44:56,834 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:56,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:44:56,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:44:56,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:44:56,835 INFO L87 Difference]: Start difference. First operand 67425 states and 122203 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 8 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 8 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-12 23:44:58,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:00,863 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 []