./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- 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 07:16:35,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:16:35,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:16:35,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:16:35,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:16:35,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:16:35,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:16:35,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:16:35,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:16:35,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:16:35,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:16:35,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:16:35,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:16:35,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:16:35,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:16:35,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:16:35,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:16:35,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:16:35,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:16:35,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:16:35,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:16:35,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:16:35,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:16:35,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:16:35,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:16:35,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:16:35,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:16:35,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:16:35,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:16:35,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:16:35,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:16:35,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:16:35,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:16:35,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:16:35,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:16:35,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:16:35,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:16:35,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:16:35,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:16:35,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:16:35,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:16:35,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:16:35,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:16:35,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:16:35,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:16:35,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:16:35,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:16:35,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:16:35,719 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:16:35,719 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:16:35,720 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:16:35,720 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:16:35,720 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:16:35,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:16:35,721 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:16:35,721 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:16:35,721 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:16:35,722 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:16:35,722 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:16:35,722 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:16:35,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:16:35,724 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:16:35,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:16:35,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:16:35,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:16:35,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:16:35,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:16:35,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:16:35,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:16:35,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:16:35,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:16:35,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:16:35,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:16:35,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:16:35,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:16:35,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:16:35,737 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:16:35,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:16:35,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:16:35,739 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:16:35,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:16:35,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:16:35,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:16:35,741 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2022-11-19 07:16:36,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:16:36,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:16:36,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:16:36,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:16:36,063 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:16:36,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-11-19 07:16:36,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/ace42c09b/62021507c3914ad387df9d34980cb189/FLAG3e43e678a [2022-11-19 07:16:36,889 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:16:36,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-11-19 07:16:36,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/ace42c09b/62021507c3914ad387df9d34980cb189/FLAG3e43e678a [2022-11-19 07:16:37,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/ace42c09b/62021507c3914ad387df9d34980cb189 [2022-11-19 07:16:37,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:16:37,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:16:37,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:16:37,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:16:37,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:16:37,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:16:37" (1/1) ... [2022-11-19 07:16:37,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1efb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:37, skipping insertion in model container [2022-11-19 07:16:37,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:16:37" (1/1) ... [2022-11-19 07:16:37,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:16:37,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:16:37,803 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-19 07:16:38,055 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-19 07:16:38,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:16:38,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:16:38,101 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-19 07:16:38,208 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-19 07:16:38,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:16:38,251 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:16:38,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38 WrapperNode [2022-11-19 07:16:38,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:16:38,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:16:38,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:16:38,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:16:38,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,412 INFO L138 Inliner]: procedures = 177, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-19 07:16:38,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:16:38,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:16:38,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:16:38,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:16:38,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:16:38,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:16:38,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:16:38,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:16:38,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (1/1) ... [2022-11-19 07:16:38,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:16:38,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:38,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:16:38,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:16:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:16:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:16:38,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:16:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:16:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:16:38,838 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:16:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:16:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:16:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:16:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:16:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:16:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:16:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:16:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:16:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:16:38,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:16:39,129 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:16:39,132 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:16:42,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:16:42,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:16:42,717 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:16:42,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:16:42 BoogieIcfgContainer [2022-11-19 07:16:42,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:16:42,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:16:42,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:16:42,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:16:42,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:16:37" (1/3) ... [2022-11-19 07:16:42,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a1b267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:16:42, skipping insertion in model container [2022-11-19 07:16:42,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:38" (2/3) ... [2022-11-19 07:16:42,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a1b267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:16:42, skipping insertion in model container [2022-11-19 07:16:42,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:16:42" (3/3) ... [2022-11-19 07:16:42,738 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2022-11-19 07:16:42,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:16:42,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:16:42,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:16:42,860 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;@78fed848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:16:42,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:16:42,869 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 07:16:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:16:42,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:42,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:42,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1698259018, now seen corresponding path program 1 times [2022-11-19 07:16:42,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:42,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456293866] [2022-11-19 07:16:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:42,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:43,053 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 07:16:43,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:43,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456293866] [2022-11-19 07:16:43,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456293866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:43,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:43,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:16:43,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801318486] [2022-11-19 07:16:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:43,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:16:43,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:16:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:16:43,097 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 07:16:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:44,133 INFO L93 Difference]: Finished difference Result 2225 states and 4887 transitions. [2022-11-19 07:16:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:16:44,142 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 07:16:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:44,169 INFO L225 Difference]: With dead ends: 2225 [2022-11-19 07:16:44,170 INFO L226 Difference]: Without dead ends: 1097 [2022-11-19 07:16:44,190 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 07:16:44,193 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:44,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2112 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:16:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-19 07:16:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2022-11-19 07:16:44,626 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 07:16:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2112 transitions. [2022-11-19 07:16:44,636 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2112 transitions. Word has length 8 [2022-11-19 07:16:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:44,637 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 2112 transitions. [2022-11-19 07:16:44,637 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 07:16:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2112 transitions. [2022-11-19 07:16:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:16:44,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:44,639 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 07:16:44,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:16:44,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash -938844990, now seen corresponding path program 1 times [2022-11-19 07:16:44,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:44,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922083584] [2022-11-19 07:16:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:45,199 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 07:16:45,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922083584] [2022-11-19 07:16:45,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922083584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:45,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:45,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547126927] [2022-11-19 07:16:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:45,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:16:45,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:16:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:16:45,218 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 07:16:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:47,639 INFO L93 Difference]: Finished difference Result 3192 states and 6222 transitions. [2022-11-19 07:16:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:16:47,643 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 07:16:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:47,657 INFO L225 Difference]: With dead ends: 3192 [2022-11-19 07:16:47,658 INFO L226 Difference]: Without dead ends: 2148 [2022-11-19 07:16:47,663 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 07:16:47,665 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 1056 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 6751 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:47,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 6751 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:16:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-11-19 07:16:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1099. [2022-11-19 07:16:48,177 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 07:16:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2114 transitions. [2022-11-19 07:16:48,187 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2114 transitions. Word has length 20 [2022-11-19 07:16:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:48,187 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 2114 transitions. [2022-11-19 07:16:48,188 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 07:16:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2114 transitions. [2022-11-19 07:16:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:16:48,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:48,191 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 07:16:48,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:16:48,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1151753055, now seen corresponding path program 1 times [2022-11-19 07:16:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:48,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515988033] [2022-11-19 07:16:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:48,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:48,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:16:48,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596816680] [2022-11-19 07:16:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:48,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:48,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:48,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:16:48,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:16:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:49,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:16:49,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:16:49,353 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 07:16:49,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:16:49,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:49,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515988033] [2022-11-19 07:16:49,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:16:49,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596816680] [2022-11-19 07:16:49,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596816680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:49,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:49,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:16:49,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272421820] [2022-11-19 07:16:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:49,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:49,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:49,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:49,357 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 07:16:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:51,170 INFO L93 Difference]: Finished difference Result 3230 states and 6264 transitions. [2022-11-19 07:16:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:51,177 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 07:16:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:51,193 INFO L225 Difference]: With dead ends: 3230 [2022-11-19 07:16:51,193 INFO L226 Difference]: Without dead ends: 2134 [2022-11-19 07:16:51,200 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 07:16:51,205 INFO L413 NwaCegarLoop]: 2613 mSDtfsCounter, 1033 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:51,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 4693 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:16:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-11-19 07:16:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2132. [2022-11-19 07:16:51,623 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 07:16:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 4150 transitions. [2022-11-19 07:16:51,636 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 4150 transitions. Word has length 44 [2022-11-19 07:16:51,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:51,637 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 4150 transitions. [2022-11-19 07:16:51,637 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 07:16:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 4150 transitions. [2022-11-19 07:16:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:16:51,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:51,648 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 07:16:51,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:16:51,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:51,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:51,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 357634385, now seen corresponding path program 1 times [2022-11-19 07:16:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:51,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246881113] [2022-11-19 07:16:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:51,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:16:51,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178073946] [2022-11-19 07:16:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:51,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:51,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:16:51,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:16:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:52,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:16:52,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:16:52,650 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 07:16:52,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:16:52,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:52,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246881113] [2022-11-19 07:16:52,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:16:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178073946] [2022-11-19 07:16:52,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178073946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:52,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:52,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:16:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982852149] [2022-11-19 07:16:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:52,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:16:52,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:16:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:16:52,653 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 07:16:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:55,567 INFO L93 Difference]: Finished difference Result 3228 states and 6261 transitions. [2022-11-19 07:16:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:16:55,568 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 07:16:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:55,576 INFO L225 Difference]: With dead ends: 3228 [2022-11-19 07:16:55,576 INFO L226 Difference]: Without dead ends: 1112 [2022-11-19 07:16:55,586 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 07:16:55,587 INFO L413 NwaCegarLoop]: 2087 mSDtfsCounter, 2143 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:55,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 3123 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:16:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-19 07:16:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2022-11-19 07:16:55,827 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 07:16:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2126 transitions. [2022-11-19 07:16:55,835 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 2126 transitions. Word has length 57 [2022-11-19 07:16:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:55,835 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 2126 transitions. [2022-11-19 07:16:55,835 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 07:16:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 2126 transitions. [2022-11-19 07:16:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:16:55,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:55,836 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 07:16:55,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:16:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:56,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:56,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1573580188, now seen corresponding path program 1 times [2022-11-19 07:16:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:56,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262417549] [2022-11-19 07:16:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:56,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:16:56,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933620217] [2022-11-19 07:16:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:56,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:56,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:56,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:16:56,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:17:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:25,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:17:25,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:25,581 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 07:17:25,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:25,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:25,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262417549] [2022-11-19 07:17:25,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:17:25,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933620217] [2022-11-19 07:17:25,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933620217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:25,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:25,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:17:25,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366083249] [2022-11-19 07:17:25,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:25,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:25,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:25,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:25,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:25,584 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 07:17:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:26,685 INFO L93 Difference]: Finished difference Result 2207 states and 4236 transitions. [2022-11-19 07:17:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:17:26,692 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 07:17:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:26,700 INFO L225 Difference]: With dead ends: 2207 [2022-11-19 07:17:26,700 INFO L226 Difference]: Without dead ends: 1114 [2022-11-19 07:17:26,707 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 07:17:26,708 INFO L413 NwaCegarLoop]: 2097 mSDtfsCounter, 1 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:26,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6287 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:17:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-19 07:17:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2022-11-19 07:17:26,957 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 07:17:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 2129 transitions. [2022-11-19 07:17:26,967 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 2129 transitions. Word has length 64 [2022-11-19 07:17:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:26,969 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 2129 transitions. [2022-11-19 07:17:26,969 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 07:17:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 2129 transitions. [2022-11-19 07:17:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:17:26,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:26,971 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 07:17:27,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:27,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:27,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash 957346886, now seen corresponding path program 1 times [2022-11-19 07:17:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:27,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572562706] [2022-11-19 07:17:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:27,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:17:27,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205630503] [2022-11-19 07:17:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:27,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:27,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:27,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:18:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:13,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:18:13,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:13,299 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 07:18:13,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:18:13,434 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 07:18:13,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572562706] [2022-11-19 07:18:13,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:18:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205630503] [2022-11-19 07:18:13,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205630503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:18:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1909083980] [2022-11-19 07:18:13,462 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-19 07:18:13,462 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:18:13,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:18:13,471 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:18:13,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:18:13,584 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 07:18:13,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,595 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 07:18:13,607 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 07:18:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,635 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:18:13,636 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 07:18:13,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,651 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 07:18:13,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,719 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:18:13,720 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 07:18:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,779 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:18:13,780 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 07:18:13,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,800 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 07:18:13,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,824 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 07:18:13,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:13,841 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 07:18:14,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,396 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 07:18:14,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,470 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 07:18:14,519 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 07:18:14,544 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 07:18:14,600 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 07:18:14,616 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 07:18:14,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,690 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 07:18:14,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,758 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 07:18:14,837 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 07:18:14,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,908 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-19 07:18:14,909 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 07:18:14,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:14,997 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-19 07:18:14,998 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 07:18:15,029 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 07:18:15,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,089 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 07:18:15,313 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 07:18:15,318 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 07:18:15,323 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 07:18:15,350 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 07:18:15,359 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 07:18:15,367 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 07:18:15,389 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 07:18:15,394 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 07:18:15,401 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 07:18:15,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,496 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 07:18:15,520 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 07:18:15,541 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 07:18:15,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:15,812 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 07:18:15,842 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 07:18:15,873 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 07:18:17,289 INFO L217 Elim1Store]: Index analysis took 1091 ms [2022-11-19 07:18:21,955 INFO L321 Elim1Store]: treesize reduction 142, result has 15.5 percent of original size [2022-11-19 07:18:21,956 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 07:18:24,508 INFO L217 Elim1Store]: Index analysis took 2377 ms [2022-11-19 07:18:27,281 INFO L321 Elim1Store]: treesize reduction 206, result has 11.2 percent of original size [2022-11-19 07:18:27,282 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 07:18:34,630 WARN L233 SmtUtils]: Spent 7.29s 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 07:18:34,630 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-19 07:18:34,631 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 07:18:55,452 WARN L233 SmtUtils]: Spent 20.64s 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 07:18:55,453 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-19 07:18:55,454 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 07:18:56,386 INFO L217 Elim1Store]: Index analysis took 705 ms [2022-11-19 07:19:21,849 WARN L233 SmtUtils]: Spent 24.84s 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 07:19:21,850 INFO L321 Elim1Store]: treesize reduction 2438, result has 32.1 percent of original size [2022-11-19 07:19:21,851 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 07:19:22,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:22,875 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 07:19:22,937 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:19:23,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:19:23,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:19:23,237 INFO L217 Elim1Store]: Index analysis took 178 ms [2022-11-19 07:19:23,244 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 07:19:23,339 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 07:19:24,176 INFO L217 Elim1Store]: Index analysis took 562 ms [2022-11-19 07:19:25,524 INFO L321 Elim1Store]: treesize reduction 36, result has 33.3 percent of original size [2022-11-19 07:19:25,524 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 07:19:25,711 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-19 07:19:25,712 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 07:19:26,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:26,279 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 07:19:26,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:19:26,752 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 07:19:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:26,919 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 07:19:27,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:27,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:19:27,206 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 07:19:27,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:19:27,273 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 07:22:34,661 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-19 07:22:34,662 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 07:22:34,707 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 07:22:45,230 INFO L217 Elim1Store]: Index analysis took 722 ms [2022-11-19 07:22:55,671 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:22:55,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-19 07:22:55,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 07:22:55,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:22:55,873 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:392) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 73 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$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 07:22:55,876 INFO L158 Benchmark]: Toolchain (without parser) took 378816.00ms. Allocated memory was 144.7MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 107.8MB in the beginning and 1.1GB in the end (delta: -991.7MB). Peak memory consumption was 948.1MB. Max. memory is 16.1GB. [2022-11-19 07:22:55,876 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 38.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:22:55,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1187.90ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 75.9MB in the end (delta: 31.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-19 07:22:55,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 170.89ms. Allocated memory is still 144.7MB. Free memory was 75.9MB in the beginning and 60.4MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:22:55,877 INFO L158 Benchmark]: Boogie Preprocessor took 207.80ms. Allocated memory is still 144.7MB. Free memory was 60.4MB in the beginning and 46.6MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:22:55,877 INFO L158 Benchmark]: RCFGBuilder took 4091.02ms. Allocated memory was 144.7MB in the beginning and 312.5MB in the end (delta: 167.8MB). Free memory was 46.6MB in the beginning and 198.3MB in the end (delta: -151.8MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-11-19 07:22:55,877 INFO L158 Benchmark]: TraceAbstraction took 373146.82ms. Allocated memory was 312.5MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 198.3MB in the beginning and 1.1GB in the end (delta: -901.2MB). Peak memory consumption was 870.9MB. Max. memory is 16.1GB. [2022-11-19 07:22:55,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 38.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1187.90ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 75.9MB in the end (delta: 31.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 170.89ms. Allocated memory is still 144.7MB. Free memory was 75.9MB in the beginning and 60.4MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 207.80ms. Allocated memory is still 144.7MB. Free memory was 60.4MB in the beginning and 46.6MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 4091.02ms. Allocated memory was 144.7MB in the beginning and 312.5MB in the end (delta: 167.8MB). Free memory was 46.6MB in the beginning and 198.3MB in the end (delta: -151.8MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * TraceAbstraction took 373146.82ms. Allocated memory was 312.5MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 198.3MB in the beginning and 1.1GB in the end (delta: -901.2MB). Peak memory consumption was 870.9MB. 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- 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 07:22:58,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:22:58,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:22:58,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:22:58,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:22:58,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:22:58,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:22:58,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:22:58,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:22:58,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:22:58,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:22:58,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:22:58,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:22:58,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:22:58,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:22:58,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:22:58,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:22:58,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:22:58,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:22:58,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:22:58,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:22:58,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:22:58,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:22:58,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:22:58,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:22:58,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:22:58,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:22:58,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:22:58,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:22:58,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:22:58,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:22:58,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:22:58,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:22:58,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:22:58,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:22:58,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:22:58,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:22:58,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:22:58,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:22:58,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:22:58,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:22:58,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:22:58,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:22:58,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:22:58,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:22:58,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:22:58,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:22:58,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:22:58,283 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:22:58,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:22:58,284 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:22:58,284 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:22:58,285 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:22:58,286 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:22:58,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:22:58,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:22:58,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:22:58,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:22:58,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:22:58,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:22:58,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:22:58,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:22:58,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:22:58,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:22:58,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:22:58,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:22:58,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:22:58,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:22:58,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:22:58,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:22:58,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:22:58,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:22:58,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:22:58,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:22:58,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:22:58,293 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:22:58,293 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:58,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:22:58,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:22:58,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:22:58,294 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2022-11-19 07:22:58,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:22:58,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:22:58,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:22:58,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:22:58,726 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:22:58,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-11-19 07:22:58,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/ddab21824/4132d95c5ae84550a946c4ec61696234/FLAG218427d0f [2022-11-19 07:22:59,718 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:22:59,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-11-19 07:22:59,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/ddab21824/4132d95c5ae84550a946c4ec61696234/FLAG218427d0f [2022-11-19 07:22:59,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/data/ddab21824/4132d95c5ae84550a946c4ec61696234 [2022-11-19 07:22:59,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:22:59,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:22:59,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:22:59,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:22:59,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:22:59,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:22:59" (1/1) ... [2022-11-19 07:22:59,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3ad206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:59, skipping insertion in model container [2022-11-19 07:22:59,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:22:59" (1/1) ... [2022-11-19 07:22:59,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:22:59,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:23:00,380 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-19 07:23:00,733 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-19 07:23:00,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:00,767 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:23:00,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:23:00,816 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-19 07:23:00,959 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-19 07:23:00,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:00,974 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:23:01,012 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-19 07:23:01,105 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_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-19 07:23:01,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:01,167 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:23:01,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01 WrapperNode [2022-11-19 07:23:01,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:23:01,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:23:01,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:23:01,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:23:01,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,352 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-19 07:23:01,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:23:01,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:23:01,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:23:01,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:23:01,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:23:01,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:23:01,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:23:01,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:23:01,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (1/1) ... [2022-11-19 07:23:01,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:23:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:01,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:23:01,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:23:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:23:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:23:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:23:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:23:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:23:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:23:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:23:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:23:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:23:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:23:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:23:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:23:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:23:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:23:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:23:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:23:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:23:01,980 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:23:01,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:23:12,402 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:23:12,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:23:12,437 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:23:12,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:23:12 BoogieIcfgContainer [2022-11-19 07:23:12,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:23:12,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:23:12,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:23:12,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:23:12,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:22:59" (1/3) ... [2022-11-19 07:23:12,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47018380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:23:12, skipping insertion in model container [2022-11-19 07:23:12,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:01" (2/3) ... [2022-11-19 07:23:12,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47018380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:23:12, skipping insertion in model container [2022-11-19 07:23:12,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:23:12" (3/3) ... [2022-11-19 07:23:12,454 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2022-11-19 07:23:12,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:23:12,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:23:12,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:23:12,633 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;@351655d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:23:12,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:23:12,647 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 07:23:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:23:12,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:12,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:12,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1311560150, now seen corresponding path program 1 times [2022-11-19 07:23:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454086056] [2022-11-19 07:23:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:12,685 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 07:23:12,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:12,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:12,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:12,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:23:12,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:12,964 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 07:23:12,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:12,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:12,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454086056] [2022-11-19 07:23:12,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454086056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:12,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:12,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:23:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894863518] [2022-11-19 07:23:12,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:12,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:23:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:23:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:23:13,030 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 07:23:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:13,268 INFO L93 Difference]: Finished difference Result 2386 states and 5136 transitions. [2022-11-19 07:23:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:23:13,273 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 07:23:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:13,308 INFO L225 Difference]: With dead ends: 2386 [2022-11-19 07:23:13,308 INFO L226 Difference]: Without dead ends: 1161 [2022-11-19 07:23:13,326 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 07:23:13,329 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 07:23:13,331 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 07:23:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-19 07:23:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-19 07:23:13,782 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 07:23:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2206 transitions. [2022-11-19 07:23:13,792 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2206 transitions. Word has length 9 [2022-11-19 07:23:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:13,793 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 2206 transitions. [2022-11-19 07:23:13,793 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 07:23:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2206 transitions. [2022-11-19 07:23:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:23:13,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:13,795 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 07:23:13,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:14,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:14,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:14,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1831599231, now seen corresponding path program 1 times [2022-11-19 07:23:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:14,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733750364] [2022-11-19 07:23:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:14,011 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 07:23:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:14,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:14,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:14,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:14,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:14,321 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 07:23:14,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:14,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:14,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733750364] [2022-11-19 07:23:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733750364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:23:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201669265] [2022-11-19 07:23:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:14,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:14,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:14,327 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 07:23:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:14,666 INFO L93 Difference]: Finished difference Result 2238 states and 4304 transitions. [2022-11-19 07:23:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:14,667 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 07:23:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:14,678 INFO L225 Difference]: With dead ends: 2238 [2022-11-19 07:23:14,679 INFO L226 Difference]: Without dead ends: 1170 [2022-11-19 07:23:14,683 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 07:23:14,685 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 07:23:14,687 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 07:23:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-11-19 07:23:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1164. [2022-11-19 07:23:15,048 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 07:23:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 2201 transitions. [2022-11-19 07:23:15,064 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 2201 transitions. Word has length 44 [2022-11-19 07:23:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:15,065 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 2201 transitions. [2022-11-19 07:23:15,065 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 07:23:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 2201 transitions. [2022-11-19 07:23:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:23:15,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:15,071 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 07:23:15,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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)] Ended with exit code 0 [2022-11-19 07:23:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:15,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1557886965, now seen corresponding path program 1 times [2022-11-19 07:23:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:15,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987854922] [2022-11-19 07:23:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:15,296 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 07:23:15,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:15,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:15,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:15,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:23:15,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:15,671 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 07:23:15,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:15,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:15,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987854922] [2022-11-19 07:23:15,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987854922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:15,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:15,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:23:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104526169] [2022-11-19 07:23:15,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:15,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:23:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:23:15,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:23:15,675 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 07:23:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:15,894 INFO L93 Difference]: Finished difference Result 2234 states and 4281 transitions. [2022-11-19 07:23:15,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:15,895 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 07:23:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:15,902 INFO L225 Difference]: With dead ends: 2234 [2022-11-19 07:23:15,903 INFO L226 Difference]: Without dead ends: 1163 [2022-11-19 07:23:15,910 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 07:23:15,913 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 07:23:15,914 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 07:23:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-11-19 07:23:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1158. [2022-11-19 07:23:16,173 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 07:23:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2191 transitions. [2022-11-19 07:23:16,181 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2191 transitions. Word has length 44 [2022-11-19 07:23:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:16,182 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 2191 transitions. [2022-11-19 07:23:16,183 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 07:23:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2191 transitions. [2022-11-19 07:23:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:23:16,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:16,190 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 07:23:16,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:16,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:16,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1299721527, now seen corresponding path program 1 times [2022-11-19 07:23:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294183111] [2022-11-19 07:23:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:16,422 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 07:23:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:16,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:16,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:23:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:16,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:16,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:23:16,776 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 07:23:16,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:23:16,874 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 07:23:16,925 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 07:23:16,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:16,926 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:16,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294183111] [2022-11-19 07:23:16,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294183111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:16,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:16,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:23:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6003685] [2022-11-19 07:23:16,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:16,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:16,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:16,931 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 07:23:20,303 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 07:23:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:25,186 INFO L93 Difference]: Finished difference Result 3285 states and 6332 transitions. [2022-11-19 07:23:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:25,188 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 07:23:25,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:25,203 INFO L225 Difference]: With dead ends: 3285 [2022-11-19 07:23:25,204 INFO L226 Difference]: Without dead ends: 2219 [2022-11-19 07:23:25,209 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 07:23:25,210 INFO L413 NwaCegarLoop]: 2676 mSDtfsCounter, 1066 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s 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, 7.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:25,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 6981 Invalid, 589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 1 Unknown, 17 Unchecked, 7.8s Time] [2022-11-19 07:23:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2022-11-19 07:23:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1160. [2022-11-19 07:23:25,831 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 07:23:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 2193 transitions. [2022-11-19 07:23:25,841 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 2193 transitions. Word has length 44 [2022-11-19 07:23:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:25,842 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 2193 transitions. [2022-11-19 07:23:25,842 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 07:23:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 2193 transitions. [2022-11-19 07:23:25,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:23:25,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:25,844 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 07:23:25,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:26,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash 136953987, now seen corresponding path program 1 times [2022-11-19 07:23:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:26,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982884614] [2022-11-19 07:23:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:26,067 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 07:23:26,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:26,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:26,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:27,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:27,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:27,547 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 07:23:27,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:27,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:27,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982884614] [2022-11-19 07:23:27,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982884614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:27,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:27,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:23:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237449920] [2022-11-19 07:23:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:27,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:27,558 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 07:23:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:28,024 INFO L93 Difference]: Finished difference Result 2325 states and 4394 transitions. [2022-11-19 07:23:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:28,025 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 07:23:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:28,034 INFO L225 Difference]: With dead ends: 2325 [2022-11-19 07:23:28,034 INFO L226 Difference]: Without dead ends: 1169 [2022-11-19 07:23:28,040 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 07:23:28,041 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 1168 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:28,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 4846 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:23:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-11-19 07:23:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1163. [2022-11-19 07:23:28,420 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 07:23:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2188 transitions. [2022-11-19 07:23:28,428 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2188 transitions. Word has length 96 [2022-11-19 07:23:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:28,429 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 2188 transitions. [2022-11-19 07:23:28,429 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 07:23:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2188 transitions. [2022-11-19 07:23:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:23:28,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:28,430 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 07:23:28,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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)] Ended with exit code 0 [2022-11-19 07:23:28,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:28,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1951210737, now seen corresponding path program 1 times [2022-11-19 07:23:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:28,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146741747] [2022-11-19 07:23:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:28,654 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 07:23:28,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:28,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:30,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:30,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:30,396 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 07:23:30,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:30,680 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 07:23:30,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:30,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146741747] [2022-11-19 07:23:30,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146741747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:30,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1545411657] [2022-11-19 07:23:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:30,681 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:23:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:23:30,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:23:30,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 07:23:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:32,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:32,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:32,489 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 07:23:32,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:32,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1545411657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:32,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:23:32,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2022-11-19 07:23:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558167086] [2022-11-19 07:23:32,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:23:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:23:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:23:32,492 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 07:23:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:33,739 INFO L93 Difference]: Finished difference Result 3444 states and 6512 transitions. [2022-11-19 07:23:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:23:33,740 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 07:23:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:33,757 INFO L225 Difference]: With dead ends: 3444 [2022-11-19 07:23:33,758 INFO L226 Difference]: Without dead ends: 2285 [2022-11-19 07:23:33,767 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 07:23:33,770 INFO L413 NwaCegarLoop]: 2712 mSDtfsCounter, 1101 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:33,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 4859 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:23:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-11-19 07:23:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-11-19 07:23:34,594 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 07:23:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4325 transitions. [2022-11-19 07:23:34,613 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4325 transitions. Word has length 96 [2022-11-19 07:23:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:34,614 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4325 transitions. [2022-11-19 07:23:34,614 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 07:23:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4325 transitions. [2022-11-19 07:23:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 07:23:34,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:34,617 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 07:23:34,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:34,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:35,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:23:35,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:35,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1540875462, now seen corresponding path program 1 times [2022-11-19 07:23:35,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:35,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299730097] [2022-11-19 07:23:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:35,046 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 07:23:35,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:35,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:35,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:36,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:36,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:36,677 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 07:23:36,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:36,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:36,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299730097] [2022-11-19 07:23:36,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299730097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:36,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:36,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:23:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781036128] [2022-11-19 07:23:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:36,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:23:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:36,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:23:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:23:36,681 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 07:23:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:37,975 INFO L93 Difference]: Finished difference Result 3511 states and 6579 transitions. [2022-11-19 07:23:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:23:37,976 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 07:23:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:37,990 INFO L225 Difference]: With dead ends: 3511 [2022-11-19 07:23:37,990 INFO L226 Difference]: Without dead ends: 2361 [2022-11-19 07:23:37,995 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 07:23:37,996 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 1053 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:37,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 4871 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:23:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-11-19 07:23:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2359. [2022-11-19 07:23:38,605 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 07:23:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 4405 transitions. [2022-11-19 07:23:38,619 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 4405 transitions. Word has length 103 [2022-11-19 07:23:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:38,620 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 4405 transitions. [2022-11-19 07:23:38,620 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 07:23:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 4405 transitions. [2022-11-19 07:23:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-19 07:23:38,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:38,621 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 07:23:38,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:38,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:38,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:38,836 INFO L85 PathProgramCache]: Analyzing trace with hash -295073475, now seen corresponding path program 1 times [2022-11-19 07:23:38,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:38,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350004130] [2022-11-19 07:23:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:38,838 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 07:23:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:38,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:38,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:39,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:39,791 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 07:23:39,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:39,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:39,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350004130] [2022-11-19 07:23:39,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350004130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:39,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:39,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:23:39,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722884317] [2022-11-19 07:23:39,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:39,795 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 07:23:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:40,406 INFO L93 Difference]: Finished difference Result 4676 states and 8768 transitions. [2022-11-19 07:23:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:40,407 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 07:23:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:40,427 INFO L225 Difference]: With dead ends: 4676 [2022-11-19 07:23:40,427 INFO L226 Difference]: Without dead ends: 2362 [2022-11-19 07:23:40,442 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 07:23:40,443 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 07:23:40,444 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 07:23:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-11-19 07:23:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2022-11-19 07:23:41,143 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 07:23:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 4410 transitions. [2022-11-19 07:23:41,165 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 4410 transitions. Word has length 111 [2022-11-19 07:23:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:41,165 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 4410 transitions. [2022-11-19 07:23:41,166 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 07:23:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 4410 transitions. [2022-11-19 07:23:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 07:23:41,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:41,168 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 07:23:41,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:41,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash -650689061, now seen corresponding path program 1 times [2022-11-19 07:23:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82642521] [2022-11-19 07:23:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:41,385 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 07:23:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:41,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:41,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:42,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:23:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:42,362 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 07:23:42,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:42,512 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 07:23:42,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:42,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82642521] [2022-11-19 07:23:42,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82642521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:42,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [588544504] [2022-11-19 07:23:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:42,513 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:23:42,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:23:42,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:23:42,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 07:23:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:43,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:43,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:44,113 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 07:23:44,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:44,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [588544504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:44,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:23:44,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:23:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963711761] [2022-11-19 07:23:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:23:44,117 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 07:23:46,814 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 07:23:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:51,597 INFO L93 Difference]: Finished difference Result 3638 states and 6729 transitions. [2022-11-19 07:23:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:51,598 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 07:23:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:51,648 INFO L225 Difference]: With dead ends: 3638 [2022-11-19 07:23:51,648 INFO L226 Difference]: Without dead ends: 1321 [2022-11-19 07:23:51,658 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 07:23:51,658 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2224 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1003 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s 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, 7.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:51,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 3247 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-19 07:23:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-11-19 07:23:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1207. [2022-11-19 07:23:52,051 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 07:23:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 2235 transitions. [2022-11-19 07:23:52,058 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 2235 transitions. Word has length 113 [2022-11-19 07:23:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:52,060 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 2235 transitions. [2022-11-19 07:23:52,060 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 07:23:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 2235 transitions. [2022-11-19 07:23:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:23:52,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:52,066 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 07:23:52,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:52,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:52,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:52,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash -725533970, now seen corresponding path program 1 times [2022-11-19 07:23:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:52,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653429612] [2022-11-19 07:23:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:52,480 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 07:23:52,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:52,481 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:52,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:53,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:23:53,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:53,579 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 07:23:53,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:53,706 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 07:23:53,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:53,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653429612] [2022-11-19 07:23:53,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653429612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:53,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [226720499] [2022-11-19 07:23:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:53,707 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:23:53,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:23:53,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:23:53,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 07:23:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:55,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:23:55,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:55,602 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 07:23:55,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:55,686 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 07:23:55,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [226720499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:55,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244242566] [2022-11-19 07:23:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:55,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:55,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:55,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:23:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:56,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:23:56,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:56,852 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 07:23:56,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:56,976 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 07:23:56,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244242566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:56,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:23:56,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-19 07:23:56,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807578899] [2022-11-19 07:23:56,977 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:23:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:23:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:23:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:23:56,979 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 07:23:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:57,765 INFO L93 Difference]: Finished difference Result 2381 states and 4443 transitions. [2022-11-19 07:23:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:23:57,766 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 07:23:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:57,774 INFO L225 Difference]: With dead ends: 2381 [2022-11-19 07:23:57,775 INFO L226 Difference]: Without dead ends: 1222 [2022-11-19 07:23:57,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:23:57,782 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, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:57,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 10864 Invalid, 91 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:23:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-19 07:23:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1218. [2022-11-19 07:23:58,095 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 07:23:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 2253 transitions. [2022-11-19 07:23:58,103 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 2253 transitions. Word has length 120 [2022-11-19 07:23:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:58,104 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 2253 transitions. [2022-11-19 07:23:58,104 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 07:23:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 2253 transitions. [2022-11-19 07:23:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 07:23:58,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:58,106 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 07:23:58,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-19 07:23:58,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:58,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:58,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:58,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:58,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 653279948, now seen corresponding path program 2 times [2022-11-19 07:23:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:58,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32979016] [2022-11-19 07:23:58,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:23:58,730 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 07:23:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:58,732 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:58,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:23:59,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:23:59,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:23:59,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:23:59,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:00,099 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 07:24:00,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:24:00,454 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 07:24:00,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:24:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32979016] [2022-11-19 07:24:00,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32979016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:24:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2146783550] [2022-11-19 07:24:00,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:24:00,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:24:00,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:24:00,460 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:24:00,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 07:24:02,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:24:02,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:24:02,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:24:02,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:02,959 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 07:24:02,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:24:03,079 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 07:24:03,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2146783550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:24:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767697063] [2022-11-19 07:24:03,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:24:03,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:24:03,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:24:03,084 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:24:03,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 07:24:04,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:24:04,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:24:04,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:24:04,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:04,430 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 07:24:04,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:24:04,862 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 07:24:04,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767697063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:24:04,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:24:04,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-19 07:24:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328475596] [2022-11-19 07:24:04,863 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:24:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:24:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:24:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:24:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:24:04,865 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 07:24:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:06,561 INFO L93 Difference]: Finished difference Result 2399 states and 4468 transitions. [2022-11-19 07:24:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:24:06,562 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 07:24:06,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:06,571 INFO L225 Difference]: With dead ends: 2399 [2022-11-19 07:24:06,571 INFO L226 Difference]: Without dead ends: 1231 [2022-11-19 07:24:06,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:24:06,579 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 07:24:06,579 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 07:24:06,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-11-19 07:24:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1225. [2022-11-19 07:24:06,887 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 07:24:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2260 transitions. [2022-11-19 07:24:06,894 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2260 transitions. Word has length 126 [2022-11-19 07:24:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:06,894 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2260 transitions. [2022-11-19 07:24:06,895 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 07:24:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2260 transitions. [2022-11-19 07:24:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:24:06,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:06,897 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 07:24:06,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:24:07,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:24:07,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:24:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:24:07,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1818700008, now seen corresponding path program 3 times [2022-11-19 07:24:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:24:07,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823374084] [2022-11-19 07:24:07,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:24:07,513 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 07:24:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:24:07,515 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:24:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/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 07:24:12,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:24:12,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:24:13,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:24:13,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:13,230 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 07:24:13,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:24:13,787 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 07:24:13,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:24:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823374084] [2022-11-19 07:24:13,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823374084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:24:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1259138622] [2022-11-19 07:24:13,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:24:13,789 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:24:13,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:24:13,792 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:24:13,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 07:27:05,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:27:05,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:27:05,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:27:05,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:27:06,039 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 07:27:06,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:27:06,214 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 07:27:06,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1259138622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:27:06,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948855474] [2022-11-19 07:27:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:27:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:27:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:27:06,220 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:27:06,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc4d69f-7802-4fb8-afe6-2ab5a9a27d60/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process