./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS --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 cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:43:22,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:43:22,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:43:22,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:43:22,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:43:22,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:43:22,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:43:22,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:43:22,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:43:22,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:43:22,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:43:22,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:43:22,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:43:22,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:43:22,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:43:22,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:43:22,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:43:22,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:43:22,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:43:22,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:43:22,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:43:22,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:43:22,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:43:22,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:43:22,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:43:22,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:43:22,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:43:22,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:43:22,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:43:22,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:43:22,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:43:22,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:43:22,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:43:22,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:43:22,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:43:22,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:43:22,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:43:22,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:43:22,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:43:22,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:43:22,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:43:22,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:43:22,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:43:22,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:43:22,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:43:22,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:43:22,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:43:22,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:43:22,659 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:43:22,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:43:22,660 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:43:22,660 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:43:22,661 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:43:22,661 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:43:22,661 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:43:22,662 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:43:22,662 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:43:22,663 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:43:22,663 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:43:22,664 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:43:22,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:43:22,665 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:43:22,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:43:22,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:43:22,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:43:22,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:43:22,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:43:22,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:43:22,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:43:22,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:43:22,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:43:22,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:43:22,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:43:22,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:43:22,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:43:22,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:43:22,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:43:22,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:43:22,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:43:22,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:43:22,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:43:22,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:43:22,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:43:22,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2022-11-19 07:43:23,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:43:23,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:43:23,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:43:23,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:43:23,107 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:43:23,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2022-11-19 07:43:23,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/ab4a8d569/79ce7a4fa4154966bc846f2fd81d74fe/FLAG057029c80 [2022-11-19 07:43:24,235 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:43:24,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2022-11-19 07:43:24,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/ab4a8d569/79ce7a4fa4154966bc846f2fd81d74fe/FLAG057029c80 [2022-11-19 07:43:24,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/ab4a8d569/79ce7a4fa4154966bc846f2fd81d74fe [2022-11-19 07:43:24,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:43:24,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:43:24,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:43:24,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:43:24,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:43:24,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:24" (1/1) ... [2022-11-19 07:43:24,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c5c7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24, skipping insertion in model container [2022-11-19 07:43:24,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:24" (1/1) ... [2022-11-19 07:43:24,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:43:24,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:43:25,521 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2022-11-19 07:43:25,874 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2022-11-19 07:43:25,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:43:25,897 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:43:25,940 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2022-11-19 07:43:26,083 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2022-11-19 07:43:26,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:43:26,149 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:43:26,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26 WrapperNode [2022-11-19 07:43:26,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:43:26,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:43:26,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:43:26,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:43:26,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,413 INFO L138 Inliner]: procedures = 177, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-19 07:43:26,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:43:26,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:43:26,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:43:26,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:43:26,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:43:26,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:43:26,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:43:26,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:43:26,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (1/1) ... [2022-11-19 07:43:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:43:26,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:43:26,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:43:26,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:43:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:43:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:43:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:43:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:43:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:43:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:43:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:43:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:43:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:43:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:43:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:43:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:43:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:43:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:43:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:43:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:43:27,054 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:43:27,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:43:30,917 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:43:31,634 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:43:31,634 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:43:31,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:31 BoogieIcfgContainer [2022-11-19 07:43:31,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:43:31,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:43:31,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:43:31,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:43:31,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:24" (1/3) ... [2022-11-19 07:43:31,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8e9587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:31, skipping insertion in model container [2022-11-19 07:43:31,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:26" (2/3) ... [2022-11-19 07:43:31,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8e9587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:31, skipping insertion in model container [2022-11-19 07:43:31,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:31" (3/3) ... [2022-11-19 07:43:31,654 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-2.i [2022-11-19 07:43:31,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:43:31,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:43:31,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:43:31,797 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28492eec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:43:31,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:43:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 1113 states, 605 states have (on average 1.9636363636363636) internal successors, (1188), 1107 states have internal predecessors, (1188), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:43:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:43:31,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:31,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:31,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1698259018, now seen corresponding path program 1 times [2022-11-19 07:43:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:31,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460310570] [2022-11-19 07:43:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:31,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:43:32,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460310570] [2022-11-19 07:43:32,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460310570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:32,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:32,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:43:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790095830] [2022-11-19 07:43:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:32,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:43:32,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:43:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:43:32,158 INFO L87 Difference]: Start difference. First operand has 1113 states, 605 states have (on average 1.9636363636363636) internal successors, (1188), 1107 states have internal predecessors, (1188), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:43:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:33,579 INFO L93 Difference]: Finished difference Result 2225 states and 4887 transitions. [2022-11-19 07:43:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:43:33,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:43:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:33,628 INFO L225 Difference]: With dead ends: 2225 [2022-11-19 07:43:33,629 INFO L226 Difference]: Without dead ends: 1097 [2022-11-19 07:43:33,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:43:33,654 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:33,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2112 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:43:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-19 07:43:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2022-11-19 07:43:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 590 states have (on average 1.8745762711864407) internal successors, (1106), 1091 states have internal predecessors, (1106), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:43:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2112 transitions. [2022-11-19 07:43:34,500 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2112 transitions. Word has length 8 [2022-11-19 07:43:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:34,501 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 2112 transitions. [2022-11-19 07:43:34,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:43:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2112 transitions. [2022-11-19 07:43:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:43:34,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:34,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:34,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:43:34,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -938844990, now seen corresponding path program 1 times [2022-11-19 07:43:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:34,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714386638] [2022-11-19 07:43:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:34,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:43:35,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:35,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714386638] [2022-11-19 07:43:35,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714386638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:35,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:35,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:35,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189124181] [2022-11-19 07:43:35,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:35,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:43:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:43:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:43:35,151 INFO L87 Difference]: Start difference. First operand 1097 states and 2112 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:43:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:38,185 INFO L93 Difference]: Finished difference Result 3192 states and 6222 transitions. [2022-11-19 07:43:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:43:38,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-19 07:43:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:38,213 INFO L225 Difference]: With dead ends: 3192 [2022-11-19 07:43:38,213 INFO L226 Difference]: Without dead ends: 2148 [2022-11-19 07:43:38,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:43:38,223 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 1056 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 6751 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:38,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 6751 Invalid, 585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:43:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-11-19 07:43:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1099. [2022-11-19 07:43:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 592 states have (on average 1.8716216216216217) internal successors, (1108), 1093 states have internal predecessors, (1108), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:43:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2114 transitions. [2022-11-19 07:43:38,955 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2114 transitions. Word has length 20 [2022-11-19 07:43:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:38,956 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 2114 transitions. [2022-11-19 07:43:38,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:43:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2114 transitions. [2022-11-19 07:43:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:43:38,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:38,960 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:38,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:43:38,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1151753055, now seen corresponding path program 1 times [2022-11-19 07:43:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:38,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515544869] [2022-11-19 07:43:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:39,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:43:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876033192] [2022-11-19 07:43:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:39,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:43:39,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:43:39,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:43:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:40,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:43:40,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:43:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:43:40,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:43:40,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:40,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515544869] [2022-11-19 07:43:40,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:43:40,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876033192] [2022-11-19 07:43:40,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876033192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:40,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:40,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:43:40,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426759562] [2022-11-19 07:43:40,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:40,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:40,339 INFO L87 Difference]: Start difference. First operand 1099 states and 2114 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:43:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:42,467 INFO L93 Difference]: Finished difference Result 3230 states and 6264 transitions. [2022-11-19 07:43:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-19 07:43:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:42,499 INFO L225 Difference]: With dead ends: 3230 [2022-11-19 07:43:42,499 INFO L226 Difference]: Without dead ends: 2134 [2022-11-19 07:43:42,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:42,511 INFO L413 NwaCegarLoop]: 2613 mSDtfsCounter, 1033 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:42,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 4693 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 07:43:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-11-19 07:43:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2132. [2022-11-19 07:43:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1125 states have (on average 1.9057777777777778) internal successors, (2144), 2126 states have internal predecessors, (2144), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:43:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 4150 transitions. [2022-11-19 07:43:43,220 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 4150 transitions. Word has length 44 [2022-11-19 07:43:43,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:43,221 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 4150 transitions. [2022-11-19 07:43:43,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:43:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 4150 transitions. [2022-11-19 07:43:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:43:43,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:43,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:43,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:43:43,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:43,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:43,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:43,453 INFO L85 PathProgramCache]: Analyzing trace with hash 357634385, now seen corresponding path program 1 times [2022-11-19 07:43:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:43,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557172491] [2022-11-19 07:43:43,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:43,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:43,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:43:43,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089330317] [2022-11-19 07:43:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:43,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:43,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:43:43,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:43:43,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:43:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:44,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:43:44,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:43:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:43:44,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:43:44,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557172491] [2022-11-19 07:43:44,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:43:44,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089330317] [2022-11-19 07:43:44,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089330317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:44,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:44,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:43:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574939413] [2022-11-19 07:43:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:43:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:43:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:43:44,463 INFO L87 Difference]: Start difference. First operand 2132 states and 4150 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:43:46,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:43:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:48,301 INFO L93 Difference]: Finished difference Result 3228 states and 6261 transitions. [2022-11-19 07:43:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:43:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-19 07:43:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:48,313 INFO L225 Difference]: With dead ends: 3228 [2022-11-19 07:43:48,313 INFO L226 Difference]: Without dead ends: 1112 [2022-11-19 07:43:48,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:43:48,330 INFO L413 NwaCegarLoop]: 2087 mSDtfsCounter, 2143 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:48,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 3123 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 07:43:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-19 07:43:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2022-11-19 07:43:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 605 states have (on average 1.8512396694214877) internal successors, (1120), 1106 states have internal predecessors, (1120), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:43:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2126 transitions. [2022-11-19 07:43:48,608 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 2126 transitions. Word has length 57 [2022-11-19 07:43:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:48,610 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 2126 transitions. [2022-11-19 07:43:48,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:43:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 2126 transitions. [2022-11-19 07:43:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:43:48,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:48,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:48,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:43:48,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:48,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1573580188, now seen corresponding path program 1 times [2022-11-19 07:43:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:48,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972438410] [2022-11-19 07:43:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:48,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:43:48,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173177231] [2022-11-19 07:43:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:48,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:43:48,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:43:48,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:44:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:27,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:44:27,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:44:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:44:27,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:44:27,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:27,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972438410] [2022-11-19 07:44:27,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:44:27,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173177231] [2022-11-19 07:44:27,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173177231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:27,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:27,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:44:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13719310] [2022-11-19 07:44:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:44:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:44:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:44:27,336 INFO L87 Difference]: Start difference. First operand 1112 states and 2126 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:44:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:28,617 INFO L93 Difference]: Finished difference Result 2207 states and 4236 transitions. [2022-11-19 07:44:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:44:28,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2022-11-19 07:44:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:28,635 INFO L225 Difference]: With dead ends: 2207 [2022-11-19 07:44:28,635 INFO L226 Difference]: Without dead ends: 1114 [2022-11-19 07:44:28,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:44:28,645 INFO L413 NwaCegarLoop]: 2097 mSDtfsCounter, 1 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:28,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6287 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:44:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-19 07:44:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2022-11-19 07:44:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 606 states have (on average 1.8514851485148516) internal successors, (1122), 1108 states have internal predecessors, (1122), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 07:44:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 2129 transitions. [2022-11-19 07:44:28,996 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 2129 transitions. Word has length 64 [2022-11-19 07:44:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:28,999 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 2129 transitions. [2022-11-19 07:44:28,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:44:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 2129 transitions. [2022-11-19 07:44:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:44:29,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:29,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:44:29,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:44:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:29,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:44:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash 957346886, now seen corresponding path program 1 times [2022-11-19 07:44:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:29,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046406505] [2022-11-19 07:44:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:29,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:29,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:44:29,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441592054] [2022-11-19 07:44:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:29,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:44:29,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:44:29,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:45:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:45:22,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:45:22,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:45:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:45:23,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046406505] [2022-11-19 07:45:23,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:45:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441592054] [2022-11-19 07:45:23,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441592054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:45:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798230349] [2022-11-19 07:45:23,137 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-19 07:45:23,138 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:45:23,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:45:23,150 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:45:23,151 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:45:23,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:45:23,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 07:45:23,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:45:23,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,352 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:45:23,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 07:45:23,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 07:45:23,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,458 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:45:23,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2022-11-19 07:45:23,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,538 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:45:23,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-19 07:45:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-19 07:45:23,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-19 07:45:23,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:23,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-19 07:45:24,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9897009 treesize of output 5376288 [2022-11-19 07:45:24,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 8458577 treesize of output 4759834 [2022-11-19 07:45:24,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 07:45:24,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 07:45:24,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 07:45:24,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 07:45:24,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 07:45:24,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 07:45:24,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:45:24,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,710 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-19 07:45:24,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-19 07:45:24,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,815 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-19 07:45:24,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-19 07:45:24,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:45:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:24,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 07:45:25,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:45:25,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:45:25,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:45:25,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2022-11-19 07:45:25,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 07:45:25,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 07:45:25,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:45:25,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:45:25,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:45:25,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 29 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458573 treesize of output 4759755 [2022-11-19 07:45:25,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-19 07:45:25,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-19 07:45:25,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:25,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 29 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458573 treesize of output 4759755 [2022-11-19 07:45:25,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-19 07:45:25,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-19 07:45:27,052 INFO L217 Elim1Store]: Index analysis took 887 ms [2022-11-19 07:45:32,029 INFO L321 Elim1Store]: treesize reduction 142, result has 15.5 percent of original size [2022-11-19 07:45:32,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 9519772 treesize of output 9519776 [2022-11-19 07:45:34,719 INFO L217 Elim1Store]: Index analysis took 2502 ms [2022-11-19 07:45:37,589 INFO L321 Elim1Store]: treesize reduction 206, result has 11.2 percent of original size [2022-11-19 07:45:37,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 9519777 treesize of output 9519780 [2022-11-19 07:45:45,601 WARN L233 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:45:45,603 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-19 07:45:45,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1986 treesize of output 1476 [2022-11-19 07:46:10,739 WARN L233 SmtUtils]: Spent 24.95s on a formula simplification. DAG size of input: 90 DAG size of output: 45 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:46:10,741 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-19 07:46:10,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2005 treesize of output 1814 [2022-11-19 07:46:11,982 INFO L217 Elim1Store]: Index analysis took 960 ms [2022-11-19 07:46:44,869 WARN L233 SmtUtils]: Spent 32.14s on a formula simplification. DAG size of input: 252 DAG size of output: 150 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:46:44,870 INFO L321 Elim1Store]: treesize reduction 2438, result has 32.1 percent of original size [2022-11-19 07:46:44,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 1542 treesize of output 2093 [2022-11-19 07:46:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:46,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-11-19 07:46:46,183 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:46:46,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:46:46,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:46:46,646 INFO L217 Elim1Store]: Index analysis took 293 ms [2022-11-19 07:46:46,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 63 [2022-11-19 07:46:46,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-19 07:46:47,919 INFO L217 Elim1Store]: Index analysis took 769 ms [2022-11-19 07:46:49,755 INFO L321 Elim1Store]: treesize reduction 36, result has 33.3 percent of original size [2022-11-19 07:46:49,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 116 [2022-11-19 07:46:49,967 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-19 07:46:49,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2022-11-19 07:46:50,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:50,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-19 07:46:51,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:46:51,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 71 [2022-11-19 07:46:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:51,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2022-11-19 07:46:51,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:52,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:52,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:46:52,003 INFO L217 Elim1Store]: Index analysis took 190 ms [2022-11-19 07:46:52,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-19 07:46:52,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:52,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-19 07:50:08,297 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-19 07:50:08,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 3002 treesize of output 2867 [2022-11-19 07:50:08,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-19 07:50:17,730 INFO L217 Elim1Store]: Index analysis took 735 ms [2022-11-19 07:51:06,533 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-19 07:51:06,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-11-19 07:51:06,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:06,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:51:06,735 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 73 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 91 more [2022-11-19 07:51:06,742 INFO L158 Benchmark]: Toolchain (without parser) took 461970.20ms. Allocated memory was 98.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 64.0MB in the beginning and 632.3MB in the end (delta: -568.2MB). Peak memory consumption was 817.5MB. Max. memory is 16.1GB. [2022-11-19 07:51:06,742 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 98.6MB. Free memory was 53.3MB in the beginning and 53.2MB in the end (delta: 53.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:51:06,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1376.61ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 63.8MB in the beginning and 81.9MB in the end (delta: -18.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-19 07:51:06,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 262.59ms. Allocated memory is still 151.0MB. Free memory was 81.9MB in the beginning and 112.7MB in the end (delta: -30.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-11-19 07:51:06,743 INFO L158 Benchmark]: Boogie Preprocessor took 189.39ms. Allocated memory is still 151.0MB. Free memory was 112.7MB in the beginning and 98.2MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:51:06,743 INFO L158 Benchmark]: RCFGBuilder took 5035.97ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 98.2MB in the beginning and 94.0MB in the end (delta: 4.2MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2022-11-19 07:51:06,744 INFO L158 Benchmark]: TraceAbstraction took 455098.22ms. Allocated memory was 201.3MB in the beginning and 1.2GB in the end (delta: 987.8MB). Free memory was 94.0MB in the beginning and 632.3MB in the end (delta: -538.2MB). Peak memory consumption was 746.3MB. Max. memory is 16.1GB. [2022-11-19 07:51:06,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 98.6MB. Free memory was 53.3MB in the beginning and 53.2MB in the end (delta: 53.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1376.61ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 63.8MB in the beginning and 81.9MB in the end (delta: -18.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 262.59ms. Allocated memory is still 151.0MB. Free memory was 81.9MB in the beginning and 112.7MB in the end (delta: -30.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 189.39ms. Allocated memory is still 151.0MB. Free memory was 112.7MB in the beginning and 98.2MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 5035.97ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 98.2MB in the beginning and 94.0MB in the end (delta: 4.2MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. * TraceAbstraction took 455098.22ms. Allocated memory was 201.3MB in the beginning and 1.2GB in the end (delta: 987.8MB). Free memory was 94.0MB in the beginning and 632.3MB in the end (delta: -538.2MB). Peak memory consumption was 746.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS --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 cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:51:09,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:51:09,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:51:09,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:51:09,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:51:09,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:51:09,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:51:09,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:51:09,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:51:09,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:51:09,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:51:09,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:51:09,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:51:09,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:51:09,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:51:09,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:51:09,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:51:09,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:51:09,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:51:09,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:51:09,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:51:09,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:51:09,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:51:09,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:51:09,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:51:09,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:51:09,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:51:09,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:51:09,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:51:09,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:51:09,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:51:09,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:51:09,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:51:09,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:51:09,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:51:09,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:51:09,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:51:09,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:51:09,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:51:09,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:51:09,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:51:09,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:51:09,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:51:09,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:51:09,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:51:09,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:51:09,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:51:09,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:51:09,229 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:51:09,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:51:09,229 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:51:09,229 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:51:09,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:51:09,231 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:51:09,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:51:09,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:51:09,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:51:09,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:51:09,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:51:09,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:51:09,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:51:09,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:51:09,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:51:09,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:51:09,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:51:09,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:51:09,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:51:09,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:51:09,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:51:09,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:51:09,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:51:09,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:09,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:51:09,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:51:09,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:51:09,239 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:51:09,239 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:51:09,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:51:09,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:51:09,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:51:09,240 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_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2022-11-19 07:51:09,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:51:09,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:51:09,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:51:09,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:51:09,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:51:09,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2022-11-19 07:51:09,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/6e1b6c2d1/23b18a9ca4c04b33b15138b02d6d5c0b/FLAGe05eba9e5 [2022-11-19 07:51:10,637 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:51:10,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2022-11-19 07:51:10,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/6e1b6c2d1/23b18a9ca4c04b33b15138b02d6d5c0b/FLAGe05eba9e5 [2022-11-19 07:51:10,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/data/6e1b6c2d1/23b18a9ca4c04b33b15138b02d6d5c0b [2022-11-19 07:51:10,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:51:10,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:51:10,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:10,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:51:10,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:51:10,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:10" (1/1) ... [2022-11-19 07:51:10,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdffcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:10, skipping insertion in model container [2022-11-19 07:51:10,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:10" (1/1) ... [2022-11-19 07:51:10,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:51:10,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:11,545 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2022-11-19 07:51:11,837 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2022-11-19 07:51:11,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:11,863 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:51:11,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:11,903 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2022-11-19 07:51:12,003 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2022-11-19 07:51:12,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:12,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:51:12,048 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2022-11-19 07:51:12,195 WARN L234 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_686d069c-64d2-4132-8ead-a5a08133751a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2022-11-19 07:51:12,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:12,262 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:51:12,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12 WrapperNode [2022-11-19 07:51:12,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:12,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:12,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:51:12,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:51:12,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,483 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-19 07:51:12,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:12,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:51:12,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:51:12,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:51:12,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:51:12,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:51:12,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:51:12,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:51:12,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (1/1) ... [2022-11-19 07:51:12,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:12,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:12,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:51:12,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:51:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:51:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:51:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:51:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:51:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:51:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:51:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:51:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:51:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:51:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:51:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:51:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:51:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:51:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:51:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:51:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:51:12,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:51:13,049 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:51:13,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:51:22,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:51:22,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:51:22,948 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:51:22,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:22 BoogieIcfgContainer [2022-11-19 07:51:22,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:51:22,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:51:22,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:51:22,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:51:22,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:10" (1/3) ... [2022-11-19 07:51:22,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1489ab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:22, skipping insertion in model container [2022-11-19 07:51:22,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12" (2/3) ... [2022-11-19 07:51:22,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1489ab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:22, skipping insertion in model container [2022-11-19 07:51:22,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:22" (3/3) ... [2022-11-19 07:51:22,961 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-2.i [2022-11-19 07:51:22,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:51:22,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:51:23,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:23,087 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c545296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:23,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:51:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:51:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:51:23,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:23,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:23,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1311560150, now seen corresponding path program 1 times [2022-11-19 07:51:23,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:23,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057471358] [2022-11-19 07:51:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:23,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:23,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:23,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:23,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:51:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:23,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:51:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:23,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:23,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:23,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057471358] [2022-11-19 07:51:23,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057471358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:23,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:23,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:51:23,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304984854] [2022-11-19 07:51:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:51:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:51:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:51:23,498 INFO L87 Difference]: Start difference. First operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:23,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:23,733 INFO L93 Difference]: Finished difference Result 2386 states and 5136 transitions. [2022-11-19 07:51:23,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:51:23,735 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 07:51:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:23,776 INFO L225 Difference]: With dead ends: 2386 [2022-11-19 07:51:23,781 INFO L226 Difference]: Without dead ends: 1161 [2022-11-19 07:51:23,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:51:23,803 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:23,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:51:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-19 07:51:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-19 07:51:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 654 states have (on average 1.834862385321101) internal successors, (1200), 1155 states have internal predecessors, (1200), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:51:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2206 transitions. [2022-11-19 07:51:24,254 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2206 transitions. Word has length 9 [2022-11-19 07:51:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:24,255 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 2206 transitions. [2022-11-19 07:51:24,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2206 transitions. [2022-11-19 07:51:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:51:24,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:24,258 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:51:24,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:24,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:24,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1831599231, now seen corresponding path program 1 times [2022-11-19 07:51:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070674873] [2022-11-19 07:51:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:24,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:24,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:24,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:24,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:51:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:24,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:24,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:24,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:24,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070674873] [2022-11-19 07:51:24,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070674873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:24,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:24,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:51:24,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478727923] [2022-11-19 07:51:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:24,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:51:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:51:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:51:24,853 INFO L87 Difference]: Start difference. First operand 1161 states and 2206 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:25,181 INFO L93 Difference]: Finished difference Result 2238 states and 4304 transitions. [2022-11-19 07:51:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:51:25,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-19 07:51:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:25,194 INFO L225 Difference]: With dead ends: 2238 [2022-11-19 07:51:25,194 INFO L226 Difference]: Without dead ends: 1170 [2022-11-19 07:51:25,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:25,201 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 1076 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:25,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 4980 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-11-19 07:51:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1164. [2022-11-19 07:51:25,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 657 states have (on average 1.8188736681887367) internal successors, (1195), 1158 states have internal predecessors, (1195), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:51:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 2201 transitions. [2022-11-19 07:51:25,485 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 2201 transitions. Word has length 44 [2022-11-19 07:51:25,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:25,485 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 2201 transitions. [2022-11-19 07:51:25,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 2201 transitions. [2022-11-19 07:51:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:51:25,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:25,491 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:51:25,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:25,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:25,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:25,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:25,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1557886965, now seen corresponding path program 1 times [2022-11-19 07:51:25,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:25,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427895939] [2022-11-19 07:51:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:25,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:25,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:25,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:25,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:51:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:25,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:51:25,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:26,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:26,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:26,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427895939] [2022-11-19 07:51:26,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427895939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:26,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:26,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:51:26,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480235025] [2022-11-19 07:51:26,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:26,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:51:26,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:51:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:26,102 INFO L87 Difference]: Start difference. First operand 1164 states and 2201 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:26,351 INFO L93 Difference]: Finished difference Result 2234 states and 4281 transitions. [2022-11-19 07:51:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:51:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-19 07:51:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:26,360 INFO L225 Difference]: With dead ends: 2234 [2022-11-19 07:51:26,362 INFO L226 Difference]: Without dead ends: 1163 [2022-11-19 07:51:26,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:26,370 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 1053 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4979 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:26,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 4979 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-11-19 07:51:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1158. [2022-11-19 07:51:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 651 states have (on average 1.8202764976958525) internal successors, (1185), 1152 states have internal predecessors, (1185), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:51:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2191 transitions. [2022-11-19 07:51:26,636 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2191 transitions. Word has length 44 [2022-11-19 07:51:26,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:26,637 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 2191 transitions. [2022-11-19 07:51:26,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2191 transitions. [2022-11-19 07:51:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:51:26,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:26,641 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:51:26,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:26,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:26,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1299721527, now seen corresponding path program 1 times [2022-11-19 07:51:26,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:26,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065645430] [2022-11-19 07:51:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:26,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:26,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:26,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:26,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:51:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:27,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:51:27,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:27,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:51:27,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:51:27,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-19 07:51:27,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:51:27,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-11-19 07:51:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:27,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:27,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:27,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065645430] [2022-11-19 07:51:27,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065645430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:27,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:27,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:51:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650805070] [2022-11-19 07:51:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:27,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:51:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:51:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:51:27,297 INFO L87 Difference]: Start difference. First operand 1158 states and 2191 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:31,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:36,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:36,311 INFO L93 Difference]: Finished difference Result 3285 states and 6332 transitions. [2022-11-19 07:51:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:51:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-19 07:51:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:36,328 INFO L225 Difference]: With dead ends: 3285 [2022-11-19 07:51:36,328 INFO L226 Difference]: Without dead ends: 2219 [2022-11-19 07:51:36,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:36,335 INFO L413 NwaCegarLoop]: 2676 mSDtfsCounter, 1066 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:36,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 6981 Invalid, 589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 1 Unknown, 17 Unchecked, 8.5s Time] [2022-11-19 07:51:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2022-11-19 07:51:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1160. [2022-11-19 07:51:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 653 states have (on average 1.8177641653905054) internal successors, (1187), 1154 states have internal predecessors, (1187), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:51:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 2193 transitions. [2022-11-19 07:51:36,881 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 2193 transitions. Word has length 44 [2022-11-19 07:51:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:36,882 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 2193 transitions. [2022-11-19 07:51:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 2193 transitions. [2022-11-19 07:51:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:51:36,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:36,887 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:36,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:37,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 136953987, now seen corresponding path program 1 times [2022-11-19 07:51:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956867999] [2022-11-19 07:51:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:37,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:37,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:37,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:37,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:51:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:38,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:38,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:38,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:38,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:38,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956867999] [2022-11-19 07:51:38,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956867999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:38,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:38,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:51:38,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895467591] [2022-11-19 07:51:38,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:38,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:51:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:51:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:51:38,368 INFO L87 Difference]: Start difference. First operand 1160 states and 2193 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:38,808 INFO L93 Difference]: Finished difference Result 2325 states and 4394 transitions. [2022-11-19 07:51:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:51:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-19 07:51:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:38,816 INFO L225 Difference]: With dead ends: 2325 [2022-11-19 07:51:38,816 INFO L226 Difference]: Without dead ends: 1169 [2022-11-19 07:51:38,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:38,823 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 1168 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 4846 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:38,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 4846 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-11-19 07:51:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1163. [2022-11-19 07:51:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.8018292682926829) internal successors, (1182), 1157 states have internal predecessors, (1182), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:51:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2188 transitions. [2022-11-19 07:51:39,212 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2188 transitions. Word has length 96 [2022-11-19 07:51:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:39,213 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 2188 transitions. [2022-11-19 07:51:39,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2188 transitions. [2022-11-19 07:51:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:51:39,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:39,215 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:39,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:39,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:39,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1951210737, now seen corresponding path program 1 times [2022-11-19 07:51:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:39,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607736823] [2022-11-19 07:51:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:39,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:39,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:39,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:51:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:40,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:40,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:51:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:41,262 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:41,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607736823] [2022-11-19 07:51:41,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607736823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:51:41,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375493718] [2022-11-19 07:51:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:41,263 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:51:41,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:51:41,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:51:41,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 07:51:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:42,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:43,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:43,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [375493718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:43,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:51:43,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2022-11-19 07:51:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400502747] [2022-11-19 07:51:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:43,015 INFO L87 Difference]: Start difference. First operand 1163 states and 2188 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:44,332 INFO L93 Difference]: Finished difference Result 3444 states and 6512 transitions. [2022-11-19 07:51:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-19 07:51:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:44,349 INFO L225 Difference]: With dead ends: 3444 [2022-11-19 07:51:44,349 INFO L226 Difference]: Without dead ends: 2285 [2022-11-19 07:51:44,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:44,358 INFO L413 NwaCegarLoop]: 2712 mSDtfsCounter, 1101 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 4859 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:44,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 4859 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:51:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-11-19 07:51:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-11-19 07:51:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1275 states have (on average 1.8172549019607842) internal successors, (2317), 2276 states have internal predecessors, (2317), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 2 states have return successors, (1004), 6 states have call predecessors, (1004), 1004 states have call successors, (1004) [2022-11-19 07:51:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4325 transitions. [2022-11-19 07:51:45,129 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4325 transitions. Word has length 96 [2022-11-19 07:51:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:45,132 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4325 transitions. [2022-11-19 07:51:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4325 transitions. [2022-11-19 07:51:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 07:51:45,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:45,143 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:45,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-11-19 07:51:45,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:45,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:45,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:45,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1540875462, now seen corresponding path program 1 times [2022-11-19 07:51:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:45,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482484757] [2022-11-19 07:51:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:45,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:45,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:45,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:51:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:46,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:46,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:47,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:47,201 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:47,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482484757] [2022-11-19 07:51:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482484757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:47,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:47,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:51:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353519580] [2022-11-19 07:51:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:47,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:47,204 INFO L87 Difference]: Start difference. First operand 2283 states and 4325 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:48,223 INFO L93 Difference]: Finished difference Result 3511 states and 6579 transitions. [2022-11-19 07:51:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-19 07:51:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:48,240 INFO L225 Difference]: With dead ends: 3511 [2022-11-19 07:51:48,240 INFO L226 Difference]: Without dead ends: 2361 [2022-11-19 07:51:48,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:48,248 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 1053 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 4871 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:48,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 4871 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:51:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-11-19 07:51:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2359. [2022-11-19 07:51:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1351 states have (on average 1.774241302738712) internal successors, (2397), 2352 states have internal predecessors, (2397), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 2 states have return successors, (1004), 6 states have call predecessors, (1004), 1004 states have call successors, (1004) [2022-11-19 07:51:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 4405 transitions. [2022-11-19 07:51:48,988 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 4405 transitions. Word has length 103 [2022-11-19 07:51:48,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:48,988 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 4405 transitions. [2022-11-19 07:51:48,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 4405 transitions. [2022-11-19 07:51:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-19 07:51:48,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:48,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:49,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:49,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:49,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -295073475, now seen corresponding path program 1 times [2022-11-19 07:51:49,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:49,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874960897] [2022-11-19 07:51:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:49,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:49,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:49,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:51:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:50,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:50,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:50,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:50,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:50,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874960897] [2022-11-19 07:51:50,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874960897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:50,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:50,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:51:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403716444] [2022-11-19 07:51:50,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:50,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:51:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:51:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:51:50,280 INFO L87 Difference]: Start difference. First operand 2359 states and 4405 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:51:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:50,786 INFO L93 Difference]: Finished difference Result 4676 states and 8768 transitions. [2022-11-19 07:51:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:51:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 111 [2022-11-19 07:51:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:50,805 INFO L225 Difference]: With dead ends: 4676 [2022-11-19 07:51:50,805 INFO L226 Difference]: Without dead ends: 2362 [2022-11-19 07:51:50,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:51:50,819 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 2 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:50,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6527 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:51:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-11-19 07:51:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2022-11-19 07:51:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1353 states have (on average 1.7738359201773837) internal successors, (2400), 2355 states have internal predecessors, (2400), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1004 states have call successors, (1006) [2022-11-19 07:51:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 4410 transitions. [2022-11-19 07:51:51,535 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 4410 transitions. Word has length 111 [2022-11-19 07:51:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:51,536 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 4410 transitions. [2022-11-19 07:51:51,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:51:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 4410 transitions. [2022-11-19 07:51:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 07:51:51,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:51,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:51,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:51,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:51,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash -650689061, now seen corresponding path program 1 times [2022-11-19 07:51:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:51:51,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183550224] [2022-11-19 07:51:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:51,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:51:51,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:51:51,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:51:51,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:51:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:52,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:51:52,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:51:52,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:51:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:51:52,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:51:52,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183550224] [2022-11-19 07:51:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183550224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:51:52,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1124739495] [2022-11-19 07:51:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:52,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:51:52,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:51:52,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:51:52,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 07:51:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:54,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:51:54,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:51:54,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:51:54,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1124739495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:54,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:51:54,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:51:54,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826533757] [2022-11-19 07:51:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:54,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:51:54,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:51:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:51:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:51:54,529 INFO L87 Difference]: Start difference. First operand 2362 states and 4410 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:51:57,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:59,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:01,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:02,901 INFO L93 Difference]: Finished difference Result 3638 states and 6729 transitions. [2022-11-19 07:52:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:52:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2022-11-19 07:52:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:02,912 INFO L225 Difference]: With dead ends: 3638 [2022-11-19 07:52:02,912 INFO L226 Difference]: Without dead ends: 1321 [2022-11-19 07:52:02,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:52:02,922 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2224 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1003 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:02,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 3247 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-19 07:52:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-11-19 07:52:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1207. [2022-11-19 07:52:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 699 states have (on average 1.7567954220314734) internal successors, (1228), 1201 states have internal predecessors, (1228), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 07:52:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 2235 transitions. [2022-11-19 07:52:03,292 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 2235 transitions. Word has length 113 [2022-11-19 07:52:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:03,292 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 2235 transitions. [2022-11-19 07:52:03,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:52:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 2235 transitions. [2022-11-19 07:52:03,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:52:03,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:03,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:03,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:03,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:03,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:03,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash -725533970, now seen corresponding path program 1 times [2022-11-19 07:52:03,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:03,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380230671] [2022-11-19 07:52:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:03,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:03,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:03,709 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:03,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 07:52:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:04,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:52:04,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:52:04,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:52:04,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:04,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380230671] [2022-11-19 07:52:04,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380230671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:04,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1555102432] [2022-11-19 07:52:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:04,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:52:04,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:52:04,879 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:52:04,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 07:52:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:06,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:52:06,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:52:06,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:52:06,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1555102432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:06,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110673366] [2022-11-19 07:52:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:06,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:06,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:06,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:52:06,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:52:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:07,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:52:07,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:52:07,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:52:07,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110673366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:07,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:52:07,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-19 07:52:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372557365] [2022-11-19 07:52:07,991 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:52:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:52:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:52:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:52:08,003 INFO L87 Difference]: Start difference. First operand 1207 states and 2235 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:52:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:08,800 INFO L93 Difference]: Finished difference Result 2381 states and 4443 transitions. [2022-11-19 07:52:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:52:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2022-11-19 07:52:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:08,811 INFO L225 Difference]: With dead ends: 2381 [2022-11-19 07:52:08,811 INFO L226 Difference]: Without dead ends: 1222 [2022-11-19 07:52:08,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:52:08,818 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 60 mSDsluCounter, 8688 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 10864 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:08,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 10864 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:52:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-19 07:52:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1218. [2022-11-19 07:52:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 709 states have (on average 1.7574047954866008) internal successors, (1246), 1211 states have internal predecessors, (1246), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 07:52:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 2253 transitions. [2022-11-19 07:52:09,122 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 2253 transitions. Word has length 120 [2022-11-19 07:52:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:09,123 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 2253 transitions. [2022-11-19 07:52:09,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:52:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 2253 transitions. [2022-11-19 07:52:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 07:52:09,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:09,125 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:09,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:09,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:09,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:52:09,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:09,740 INFO L85 PathProgramCache]: Analyzing trace with hash 653279948, now seen corresponding path program 2 times [2022-11-19 07:52:09,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:09,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704743208] [2022-11-19 07:52:09,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:52:09,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:09,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:09,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:09,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:52:10,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:52:10,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:52:10,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:52:10,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:52:11,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:52:11,413 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:11,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704743208] [2022-11-19 07:52:11,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704743208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:11,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [85265910] [2022-11-19 07:52:11,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:52:11,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:52:11,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:52:11,419 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:52:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 07:52:13,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:52:13,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:52:13,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:52:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:52:13,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:52:13,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [85265910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:13,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422612864] [2022-11-19 07:52:13,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:52:13,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:13,989 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:52:14,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 07:52:15,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:52:15,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:52:15,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:52:15,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:52:15,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:52:15,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422612864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:15,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:52:15,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-19 07:52:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890740098] [2022-11-19 07:52:15,963 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:52:15,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:52:15,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:52:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:52:15,966 INFO L87 Difference]: Start difference. First operand 1218 states and 2253 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:52:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:17,726 INFO L93 Difference]: Finished difference Result 2399 states and 4468 transitions. [2022-11-19 07:52:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:52:17,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 126 [2022-11-19 07:52:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:17,735 INFO L225 Difference]: With dead ends: 2399 [2022-11-19 07:52:17,736 INFO L226 Difference]: Without dead ends: 1231 [2022-11-19 07:52:17,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:52:17,742 INFO L413 NwaCegarLoop]: 2179 mSDtfsCounter, 76 mSDsluCounter, 17396 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 19575 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:17,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 19575 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:52:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-11-19 07:52:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1225. [2022-11-19 07:52:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 716 states have (on average 1.75) internal successors, (1253), 1218 states have internal predecessors, (1253), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 07:52:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2260 transitions. [2022-11-19 07:52:18,138 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2260 transitions. Word has length 126 [2022-11-19 07:52:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:18,139 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2260 transitions. [2022-11-19 07:52:18,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:52:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2260 transitions. [2022-11-19 07:52:18,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:52:18,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:18,141 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:18,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:18,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:18,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:18,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:52:18,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:18,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1818700008, now seen corresponding path program 3 times [2022-11-19 07:52:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:18,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24718935] [2022-11-19 07:52:18,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:52:18,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:18,768 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:18,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 07:52:24,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:52:24,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:52:24,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:52:24,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 07:52:24,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 07:52:25,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:25,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24718935] [2022-11-19 07:52:25,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24718935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:25,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1326642725] [2022-11-19 07:52:25,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:52:25,065 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:52:25,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:52:25,066 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:52:25,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 07:55:29,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:55:29,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:55:29,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:55:29,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 07:55:29,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 07:55:30,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1326642725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:30,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588073827] [2022-11-19 07:55:30,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:55:30,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:30,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:30,187 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:55:30,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686d069c-64d2-4132-8ead-a5a08133751a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process