./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 --- 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-2329fc7 [2022-12-14 05:46:11,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:46:11,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:46:11,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:46:11,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:46:11,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:46:11,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:46:11,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:46:11,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:46:11,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:46:11,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:46:11,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:46:11,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:46:11,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:46:11,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:46:11,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:46:11,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:46:11,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:46:11,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:46:11,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:46:11,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:46:11,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:46:11,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:46:11,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:46:11,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:46:11,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:46:11,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:46:11,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:46:11,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:46:11,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:46:11,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:46:11,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:46:11,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:46:11,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:46:11,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:46:11,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:46:11,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:46:11,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:46:11,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:46:11,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:46:11,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:46:11,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 05:46:11,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:46:11,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:46:11,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:46:11,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:46:11,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:46:11,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:46:11,720 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:46:11,721 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:46:11,721 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:46:11,721 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:46:11,721 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:46:11,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:46:11,721 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:46:11,722 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:46:11,722 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:46:11,722 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:46:11,722 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:46:11,722 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:46:11,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:46:11,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:46:11,724 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:46:11,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:46:11,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:46:11,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:46:11,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:46:11,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:46:11,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:46:11,725 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:46:11,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:46:11,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:46:11,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:46:11,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:46:11,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:46:11,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:46:11,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:46:11,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:46:11,727 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:46:11,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:46:11,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:46:11,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:46:11,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:46:11,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:46:11,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:46:11,728 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 [2022-12-14 05:46:11,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:46:11,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:46:11,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:46:11,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:46:11,937 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:46:11,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-12-14 05:46:14,501 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:46:14,619 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:46:14,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-12-14 05:46:14,624 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data/c2bd1285c/329502afc7244595abf9ea74d59432e4/FLAG60fa1e825 [2022-12-14 05:46:14,634 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data/c2bd1285c/329502afc7244595abf9ea74d59432e4 [2022-12-14 05:46:14,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:46:14,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:46:14,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:46:14,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:46:14,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:46:14,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305f8411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14, skipping insertion in model container [2022-12-14 05:46:14,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:46:14,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:46:14,760 WARN L237 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-12-14 05:46:14,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:46:14,787 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:46:14,798 WARN L237 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-12-14 05:46:14,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:46:14,821 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:46:14,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14 WrapperNode [2022-12-14 05:46:14,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:46:14,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:46:14,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:46:14,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:46:14,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,847 INFO L138 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-12-14 05:46:14,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:46:14,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:46:14,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:46:14,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:46:14,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:46:14,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:46:14,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:46:14,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:46:14,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (1/1) ... [2022-12-14 05:46:14,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:46:14,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:14,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:46:14,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:46:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:46:14,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:46:14,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:46:14,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:46:14,927 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-12-14 05:46:14,927 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-12-14 05:46:14,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:46:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:46:14,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:46:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:46:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 05:46:14,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 05:46:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:46:15,002 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:46:15,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:46:15,165 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:46:15,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:46:15,189 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:46:15,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:15 BoogieIcfgContainer [2022-12-14 05:46:15,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:46:15,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:46:15,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:46:15,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:46:15,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:46:14" (1/3) ... [2022-12-14 05:46:15,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b43af9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:15, skipping insertion in model container [2022-12-14 05:46:15,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:14" (2/3) ... [2022-12-14 05:46:15,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b43af9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:15, skipping insertion in model container [2022-12-14 05:46:15,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:15" (3/3) ... [2022-12-14 05:46:15,200 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2022-12-14 05:46:15,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:46:15,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 05:46:15,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:46:15,256 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;@566829d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:46:15,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 05:46:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.4) internal successors, (28), 26 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 05:46:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:46:15,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:15,265 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:15,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:15,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1647703831, now seen corresponding path program 1 times [2022-12-14 05:46:15,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:15,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951035086] [2022-12-14 05:46:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:15,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951035086] [2022-12-14 05:46:15,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951035086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157773843] [2022-12-14 05:46:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:15,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:15,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:15,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:15,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:46:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:15,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:46:15,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:15,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:15,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157773843] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:15,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [169942305] [2022-12-14 05:46:15,681 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:46:15,681 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:15,684 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:46:15,688 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:46:15,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:46:15,896 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-12-14 05:46:15,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-12-14 05:46:15,937 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-12-14 05:46:15,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-12-14 05:46:16,005 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 05:46:16,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 05:46:16,079 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 77 for LOIs [2022-12-14 05:46:16,124 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:46:16,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [169942305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:16,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:16,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 11 [2022-12-14 05:46:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458736887] [2022-12-14 05:46:16,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:16,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:46:16,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:46:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:46:16,762 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.4) internal successors, (28), 26 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 9 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:46:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:16,906 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-12-14 05:46:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:46:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 10 [2022-12-14 05:46:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:16,913 INFO L225 Difference]: With dead ends: 40 [2022-12-14 05:46:16,913 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 05:46:16,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:46:16,917 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:16,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 124 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 05:46:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 05:46:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:46:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-12-14 05:46:16,944 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2022-12-14 05:46:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:16,945 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-12-14 05:46:16,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:46:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-12-14 05:46:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:46:16,946 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:16,946 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:16,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:46:17,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 05:46:17,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash -920783440, now seen corresponding path program 1 times [2022-12-14 05:46:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:17,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269465380] [2022-12-14 05:46:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:46:17,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:17,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269465380] [2022-12-14 05:46:17,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269465380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:17,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:17,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:46:17,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860869843] [2022-12-14 05:46:17,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:17,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:46:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:46:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:46:17,357 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:17,411 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-12-14 05:46:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:46:17,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2022-12-14 05:46:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:17,413 INFO L225 Difference]: With dead ends: 45 [2022-12-14 05:46:17,413 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 05:46:17,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:17,414 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:17,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 82 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 05:46:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-12-14 05:46:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-12-14 05:46:17,423 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2022-12-14 05:46:17,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:17,423 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-12-14 05:46:17,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-12-14 05:46:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:46:17,424 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:17,424 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:17,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:46:17,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash -920783248, now seen corresponding path program 1 times [2022-12-14 05:46:17,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:17,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161155737] [2022-12-14 05:46:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:17,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:46:17,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:17,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161155737] [2022-12-14 05:46:17,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161155737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:17,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:17,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:46:17,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615786901] [2022-12-14 05:46:17,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:17,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:46:17,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:46:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:46:17,584 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:17,656 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2022-12-14 05:46:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:46:17,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2022-12-14 05:46:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:17,657 INFO L225 Difference]: With dead ends: 68 [2022-12-14 05:46:17,657 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 05:46:17,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:46:17,658 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:17,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 95 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 05:46:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-12-14 05:46:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-12-14 05:46:17,664 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 23 [2022-12-14 05:46:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:17,664 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-12-14 05:46:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-12-14 05:46:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 05:46:17,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:17,665 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:46:17,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1310205389, now seen corresponding path program 1 times [2022-12-14 05:46:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:17,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866150598] [2022-12-14 05:46:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:17,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866150598] [2022-12-14 05:46:17,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866150598] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682094656] [2022-12-14 05:46:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:17,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:17,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:17,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:46:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:46:17,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:17,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:46:17,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682094656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:17,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:46:17,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-12-14 05:46:17,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969173992] [2022-12-14 05:46:17,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:17,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:46:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:17,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:46:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:46:17,876 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 05:46:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:17,964 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-12-14 05:46:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:46:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2022-12-14 05:46:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:17,966 INFO L225 Difference]: With dead ends: 38 [2022-12-14 05:46:17,966 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 05:46:17,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-14 05:46:17,967 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:17,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 89 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 05:46:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-12-14 05:46:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-12-14 05:46:17,976 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 36 [2022-12-14 05:46:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:17,976 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-12-14 05:46:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 05:46:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-12-14 05:46:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 05:46:17,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:17,977 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:17,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:46:18,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:18,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1310205581, now seen corresponding path program 1 times [2022-12-14 05:46:18,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:18,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431568748] [2022-12-14 05:46:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:18,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431568748] [2022-12-14 05:46:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431568748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785662529] [2022-12-14 05:46:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:18,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:18,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:18,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:18,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:46:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:18,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:46:18,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:18,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:18,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785662529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:18,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [337276110] [2022-12-14 05:46:18,497 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:46:18,497 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:18,498 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:337) 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) [2022-12-14 05:46:18,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:18,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-12-14 05:46:18,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147331836] [2022-12-14 05:46:18,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:18,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 05:46:18,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:18,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 05:46:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:46:18,501 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 9 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 05:46:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:18,694 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-12-14 05:46:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:46:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 9 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 36 [2022-12-14 05:46:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:18,695 INFO L225 Difference]: With dead ends: 38 [2022-12-14 05:46:18,696 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 05:46:18,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:46:18,697 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:18,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 163 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 05:46:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-12-14 05:46:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-12-14 05:46:18,704 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 36 [2022-12-14 05:46:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:18,704 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-12-14 05:46:18,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 9 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 05:46:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-12-14 05:46:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:46:18,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:18,705 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:18,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:46:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:18,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1961661467, now seen corresponding path program 1 times [2022-12-14 05:46:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:18,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202991602] [2022-12-14 05:46:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:19,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:19,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202991602] [2022-12-14 05:46:19,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202991602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:19,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343301480] [2022-12-14 05:46:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:19,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:19,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:19,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:46:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:46:19,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:19,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:46:19,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343301480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:19,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1737070879] [2022-12-14 05:46:19,262 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 05:46:19,262 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:19,262 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:337) 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) [2022-12-14 05:46:19,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:19,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-14 05:46:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861722651] [2022-12-14 05:46:19,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 05:46:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 05:46:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:46:19,265 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 05:46:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:19,444 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-12-14 05:46:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 05:46:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 37 [2022-12-14 05:46:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:19,445 INFO L225 Difference]: With dead ends: 76 [2022-12-14 05:46:19,445 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 05:46:19,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-12-14 05:46:19,447 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 84 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:19,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 183 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 05:46:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2022-12-14 05:46:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 17 states have call successors, (17), 8 states have call predecessors, (17), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 05:46:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2022-12-14 05:46:19,458 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 37 [2022-12-14 05:46:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:19,458 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2022-12-14 05:46:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 05:46:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2022-12-14 05:46:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:46:19,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:19,460 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:19,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:46:19,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:19,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1961667425, now seen corresponding path program 1 times [2022-12-14 05:46:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:19,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160540927] [2022-12-14 05:46:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:46:19,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:19,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160540927] [2022-12-14 05:46:19,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160540927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:19,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:19,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:46:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795203886] [2022-12-14 05:46:19,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:19,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:46:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:46:19,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:46:19,731 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:19,779 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-12-14 05:46:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:46:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2022-12-14 05:46:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:19,780 INFO L225 Difference]: With dead ends: 68 [2022-12-14 05:46:19,780 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 05:46:19,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:46:19,781 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:19,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 05:46:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-12-14 05:46:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 17 states have call successors, (17), 8 states have call predecessors, (17), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 05:46:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2022-12-14 05:46:19,788 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 37 [2022-12-14 05:46:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:19,788 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2022-12-14 05:46:19,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-12-14 05:46:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 05:46:19,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:19,789 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:46:19,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 791839320, now seen corresponding path program 2 times [2022-12-14 05:46:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:19,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667959403] [2022-12-14 05:46:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 05:46:20,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667959403] [2022-12-14 05:46:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667959403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:20,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054943672] [2022-12-14 05:46:20,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:46:20,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:20,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:20,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:46:20,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 05:46:20,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:46:20,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 05:46:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 05:46:20,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 05:46:20,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054943672] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:20,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730245606] [2022-12-14 05:46:20,432 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 05:46:20,432 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:20,433 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:337) 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) [2022-12-14 05:46:20,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:20,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-14 05:46:20,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322769434] [2022-12-14 05:46:20,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:20,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 05:46:20,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:20,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 05:46:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 05:46:20,436 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (35), 12 states have call predecessors, (35), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2022-12-14 05:46:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:20,907 INFO L93 Difference]: Finished difference Result 144 states and 180 transitions. [2022-12-14 05:46:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 05:46:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (35), 12 states have call predecessors, (35), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) Word has length 76 [2022-12-14 05:46:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:20,908 INFO L225 Difference]: With dead ends: 144 [2022-12-14 05:46:20,908 INFO L226 Difference]: Without dead ends: 143 [2022-12-14 05:46:20,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=986, Invalid=3046, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 05:46:20,911 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 313 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:20,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 319 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:46:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-14 05:46:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 133. [2022-12-14 05:46:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 94 states have (on average 1.1170212765957446) internal successors, (105), 94 states have internal predecessors, (105), 35 states have call successors, (35), 14 states have call predecessors, (35), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 05:46:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2022-12-14 05:46:20,930 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 76 [2022-12-14 05:46:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:20,931 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2022-12-14 05:46:20,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (35), 12 states have call predecessors, (35), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2022-12-14 05:46:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2022-12-14 05:46:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-14 05:46:20,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:20,934 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:20,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 05:46:21,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:21,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1510305544, now seen corresponding path program 3 times [2022-12-14 05:46:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:21,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962835128] [2022-12-14 05:46:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:21,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-12-14 05:46:21,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962835128] [2022-12-14 05:46:21,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962835128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385302960] [2022-12-14 05:46:21,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:46:21,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:21,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:21,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:21,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:46:22,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:46:22,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:46:22,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 05:46:22,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-12-14 05:46:22,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-12-14 05:46:22,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385302960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:22,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1719136447] [2022-12-14 05:46:22,428 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 05:46:22,429 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:22,429 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:337) 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) [2022-12-14 05:46:22,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:22,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 6, 6] total 44 [2022-12-14 05:46:22,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142842754] [2022-12-14 05:46:22,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:22,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-14 05:46:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:22,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-14 05:46:22,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1679, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 05:46:22,432 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 45 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 32 states have internal predecessors, (105), 18 states have call successors, (51), 14 states have call predecessors, (51), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2022-12-14 05:46:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:24,873 INFO L93 Difference]: Finished difference Result 288 states and 358 transitions. [2022-12-14 05:46:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-12-14 05:46:24,873 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 32 states have internal predecessors, (105), 18 states have call successors, (51), 14 states have call predecessors, (51), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) Word has length 154 [2022-12-14 05:46:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:24,875 INFO L225 Difference]: With dead ends: 288 [2022-12-14 05:46:24,875 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:46:24,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6732 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4763, Invalid=16699, Unknown=0, NotChecked=0, Total=21462 [2022-12-14 05:46:24,879 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 831 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:24,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 371 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:46:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:46:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:46:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-14 05:46:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:46:24,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2022-12-14 05:46:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:24,880 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:46:24,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 32 states have internal predecessors, (105), 18 states have call successors, (51), 14 states have call predecessors, (51), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2022-12-14 05:46:24,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:46:24,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:46:24,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-14 05:46:24,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-14 05:46:24,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-14 05:46:24,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-14 05:46:24,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-14 05:46:24,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-14 05:46:24,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:46:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 05:46:25,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:46:27,150 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:46:27,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:46:27,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:46:27,151 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (= (select |#valid| |ULTIMATE.start_main_#t~malloc14#1.base|) 1) (= |ULTIMATE.start_#Ultimate.meminit_#product#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (not (= (ite (and (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~n~0#1| 1073741824)) 1 0) 0)) (= |ULTIMATE.start_main_#t~malloc14#1.offset| |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (= 31 (select |#length| 2)) (= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.base| |ULTIMATE.start_main_#t~malloc14#1.base|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (not (= |ULTIMATE.start_main_#t~malloc14#1.base| 3)) (= |ULTIMATE.start_main_#t~malloc14#1.base| |ULTIMATE.start_main_~a~0#1.base|) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_#t~malloc14#1.offset|) (= (select |#valid| 1) 1) (< |ULTIMATE.start_main_#t~malloc14#1.base| |#StackHeapBarrier|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (* (mod |ULTIMATE.start_main_~n~0#1| 1073741824) 4) (select |#length| |ULTIMATE.start_main_#t~malloc14#1.base|)) (= |ULTIMATE.start_main_#t~malloc14#1.offset| 0) (= (select .cse0 1) 0) (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_#Ultimate.meminit_#ptr#1.base|)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 05:46:27,151 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (= (select |#valid| |ULTIMATE.start_main_#t~malloc14#1.base|) 1) (= |ULTIMATE.start_#Ultimate.meminit_#product#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (not (= (ite (and (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~n~0#1| 1073741824)) 1 0) 0)) (= |ULTIMATE.start_main_#t~malloc14#1.offset| |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (= 31 (select |#length| 2)) (= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.base| |ULTIMATE.start_main_#t~malloc14#1.base|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (not (= |ULTIMATE.start_main_#t~malloc14#1.base| 3)) (= |ULTIMATE.start_main_#t~malloc14#1.base| |ULTIMATE.start_main_~a~0#1.base|) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_#t~malloc14#1.offset|) (= (select |#valid| 1) 1) (< |ULTIMATE.start_main_#t~malloc14#1.base| |#StackHeapBarrier|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (* (mod |ULTIMATE.start_main_~n~0#1| 1073741824) 4) (select |#length| |ULTIMATE.start_main_#t~malloc14#1.base|)) (= |ULTIMATE.start_main_#t~malloc14#1.offset| 0) (= (select .cse0 1) 0) (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_#Ultimate.meminit_#ptr#1.base|)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 05:46:27,151 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-12-14 05:46:27,151 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-12-14 05:46:27,151 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (= (select |#length| 3) 12) (not (= (ite (<= 0 |ULTIMATE.start_main_~n~0#1|) 1 0) 0)) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= 31 (select |#length| 2)) (= 2 (select |#length| 1)) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 05:46:27,151 INFO L895 garLoopResultBuilder]: At program point L47-2(line 47) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (= (select |#valid| |ULTIMATE.start_main_#t~malloc14#1.base|) 1) (= |ULTIMATE.start_#Ultimate.meminit_#product#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (not (= (ite (and (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~n~0#1| 1073741824)) 1 0) 0)) (= |ULTIMATE.start_main_#t~malloc14#1.offset| |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (= 31 (select |#length| 2)) (= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.base| |ULTIMATE.start_main_#t~malloc14#1.base|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (not (= |ULTIMATE.start_main_#t~malloc14#1.base| 3)) (= |ULTIMATE.start_main_#t~malloc14#1.base| |ULTIMATE.start_main_~a~0#1.base|) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_#t~malloc14#1.offset|) (= (select |#valid| 1) 1) (< |ULTIMATE.start_main_#t~malloc14#1.base| |#StackHeapBarrier|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (* (mod |ULTIMATE.start_main_~n~0#1| 1073741824) 4) (select |#length| |ULTIMATE.start_main_#t~malloc14#1.base|)) (= |ULTIMATE.start_main_#t~malloc14#1.offset| 0) (= (select .cse0 1) 0) (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_#Ultimate.meminit_#ptr#1.base|)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L47-3(line 47) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (= (select |#length| 3) 12) (= 31 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))) [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 38) the Hoare annotation is: true [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 38) no Hoare annotation was computed. [2022-12-14 05:46:27,152 INFO L899 garLoopResultBuilder]: For program point checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point L26-2(line 26) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L895 garLoopResultBuilder]: At program point L26-4(lines 26 27) the Hoare annotation is: (let ((.cse6 (<= 1 |check_#in~y|)) (.cse5 (= |check_#in~x| 0))) (let ((.cse3 (let ((.cse7 (<= 1 check_~y)) (.cse8 (<= 1 check_~x))) (or (and .cse6 (<= 0 |check_#in~x|) .cse7 .cse8) (and .cse5 .cse7 .cse8)))) (.cse4 (<= check_~y 2147483646)) (.cse0 (not (<= |check_#in~y| 2147483646))) (.cse1 (not (<= 1 |check_#in~x|))) (.cse2 (not .cse6))) (and (or .cse0 .cse1 .cse2 (not (<= |check_#in~x| 6)) (<= check_~x 7)) (or (not (= ((as const (Array Int Int)) 0) (select |#memory_int| |check_#in~a.base|))) .cse0 (and .cse3 (<= check_~x 1) .cse4) (not .cse5)) (or .cse0 .cse1 (<= check_~x 4) .cse2 (not (<= |check_#in~x| 3))) (or .cse0 .cse1 (<= check_~x 8) .cse2 (not (<= |check_#in~x| 7))) (or .cse0 (<= check_~x 9) .cse1 .cse2 (not (<= |check_#in~x| 8))) (or .cse0 .cse1 (<= check_~x 5) .cse2 (not (<= |check_#in~x| 4))) (or .cse0 .cse1 (<= check_~x 3) .cse2 (not (<= |check_#in~x| 2))) (or .cse0 .cse1 (<= check_~x 2) (not (<= |check_#in~x| 1)) .cse2) (or .cse0 .cse1 (and .cse3 (< check_~x 2147483647) .cse4) .cse2) (or .cse0 .cse1 (not (<= |check_#in~x| 5)) .cse2 (<= check_~x 6)) (or .cse0 (not (<= |check_#in~x| 9)) .cse1 (<= check_~x 10) .cse2) (or .cse0 (not (<= |check_#in~x| 10)) .cse1 (<= check_~x 2147483645) .cse2)))) [2022-12-14 05:46:27,153 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse2 (<= check_~y 2147483646)) (.cse0 (not (<= |check_#in~y| 2147483646))) (.cse1 (not (<= 1 |check_#in~x|))) (.cse3 (not (<= 1 |check_#in~y|)))) (and (or .cse0 .cse1 (and (<= 2 check_~y) (<= 1 check_~x) .cse2) .cse3) (or .cse0 (not (<= |check_#in~x| 10)) .cse1 (<= check_~x 10) .cse3) (or .cse0 .cse1 .cse3 (not (<= |check_#in~x| 6)) (<= check_~x 6)) (or .cse0 (not (<= |check_#in~x| 9)) (<= check_~x 9) .cse1 .cse3) (or .cse0 .cse1 .cse3 (<= check_~x 7) (not (<= |check_#in~x| 7))) (or .cse0 .cse1 (<= check_~x 8) .cse3 (not (<= |check_#in~x| 8))) (or .cse0 .cse1 (not (<= |check_#in~x| 5)) (<= check_~x 5) .cse3) (or .cse0 .cse1 (<= check_~x 3) .cse3 (not (<= |check_#in~x| 3))) (or (not (= ((as const (Array Int Int)) 0) (select |#memory_int| |check_#in~a.base|))) .cse0 (not (= |check_#in~x| 0)) (let ((.cse4 (select |#memory_int| check_~a.base))) (and (<= (+ check_~x 1) check_~y) (= check_~x 0) (= (select .cse4 (+ (* 4 check_~y) check_~a.offset)) 0) (= (select .cse4 (+ (* 4 check_~x) check_~a.offset)) 0) .cse2))) (or .cse0 .cse1 (<= check_~x 2) .cse3 (not (<= |check_#in~x| 2))) (or .cse0 .cse1 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 4))) (or .cse0 .cse1 (<= check_~x 2147483645) .cse3) (or .cse0 .cse1 (not (<= |check_#in~x| 1)) .cse3 (<= check_~x 1)))) [2022-12-14 05:46:27,153 INFO L895 garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse2 (<= check_~y 2147483646)) (.cse0 (not (<= |check_#in~y| 2147483646))) (.cse1 (not (<= 1 |check_#in~x|))) (.cse3 (not (<= 1 |check_#in~y|)))) (and (or .cse0 .cse1 (and (<= 2 check_~y) (<= 1 check_~x) .cse2) .cse3) (or .cse0 (not (<= |check_#in~x| 10)) .cse1 (<= check_~x 10) .cse3) (or .cse0 .cse1 .cse3 (not (<= |check_#in~x| 6)) (<= check_~x 6)) (or .cse0 (not (<= |check_#in~x| 9)) (<= check_~x 9) .cse1 .cse3) (or .cse0 .cse1 .cse3 (<= check_~x 7) (not (<= |check_#in~x| 7))) (or .cse0 .cse1 (<= check_~x 8) .cse3 (not (<= |check_#in~x| 8))) (or .cse0 .cse1 (not (<= |check_#in~x| 5)) (<= check_~x 5) .cse3) (or .cse0 .cse1 (<= check_~x 3) .cse3 (not (<= |check_#in~x| 3))) (or (not (= ((as const (Array Int Int)) 0) (select |#memory_int| |check_#in~a.base|))) .cse0 (not (= |check_#in~x| 0)) (let ((.cse4 (select |#memory_int| check_~a.base))) (and (<= (+ check_~x 1) check_~y) (= check_~x 0) (= (select .cse4 (+ (* 4 check_~y) check_~a.offset)) 0) (= (select .cse4 (+ (* 4 check_~x) check_~a.offset)) 0) .cse2))) (or .cse0 .cse1 (<= check_~x 2) .cse3 (not (<= |check_#in~x| 2))) (or .cse0 .cse1 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 4))) (or .cse0 .cse1 (<= check_~x 2147483645) .cse3) (or .cse0 .cse1 (not (<= |check_#in~x| 1)) .cse3 (<= check_~x 1)))) [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 38) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L902 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2022-12-14 05:46:27,153 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-12-14 05:46:27,154 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2022-12-14 05:46:27,156 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:27,157 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:46:27,161 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:265) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:455) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) 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) [2022-12-14 05:46:27,162 INFO L158 Benchmark]: Toolchain (without parser) took 12525.18ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 76.2MB in the beginning and 60.6MB in the end (delta: 15.6MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2022-12-14 05:46:27,162 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:46:27,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.08ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 65.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:46:27,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.97ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 63.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:46:27,163 INFO L158 Benchmark]: Boogie Preprocessor took 16.59ms. Allocated memory is still 117.4MB. Free memory was 63.6MB in the beginning and 62.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:46:27,163 INFO L158 Benchmark]: RCFGBuilder took 325.36ms. Allocated memory is still 117.4MB. Free memory was 62.3MB in the beginning and 48.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:46:27,163 INFO L158 Benchmark]: TraceAbstraction took 11968.89ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 47.2MB in the beginning and 60.6MB in the end (delta: -13.3MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2022-12-14 05:46:27,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.08ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 65.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.97ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 63.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.59ms. Allocated memory is still 117.4MB. Free memory was 63.6MB in the beginning and 62.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 325.36ms. Allocated memory is still 117.4MB. Free memory was 62.3MB in the beginning and 48.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11968.89ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 47.2MB in the beginning and 60.6MB in the end (delta: -13.3MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 9, TraceHistogramMax: 13, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1387 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1385 mSDsluCounter, 1466 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1211 mSDsCounter, 242 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1637 IncrementalHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 242 mSolverCounterUnsat, 255 mSDtfsCounter, 1637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 931 GetRequests, 627 SyntacticMatches, 1 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8177 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=8, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 299 PreInvPairs, 345 NumberOfFragments, 1406 HoareAnnotationTreeSize, 299 FomulaSimplifications, 930 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 12 FomulaSimplificationsInter, 19725 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 781 NumberOfCodeBlocks, 781 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1074 ConstructedInterpolants, 0 QuantifiedInterpolants, 2489 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1725 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 1992/2903 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 6, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 16, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 25, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 64, DAG_COMPRESSION_RETAINED_NODES: 28, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 05:46:27,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 --- 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-2329fc7 [2022-12-14 05:46:28,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:46:28,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:46:28,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:46:28,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:46:28,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:46:28,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:46:28,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:46:28,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:46:28,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:46:28,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:46:28,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:46:28,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:46:28,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:46:28,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:46:28,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:46:28,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:46:28,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:46:28,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:46:28,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:46:28,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:46:28,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:46:28,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:46:28,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:46:28,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:46:28,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:46:28,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:46:28,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:46:28,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:46:28,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:46:28,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:46:28,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:46:28,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:46:28,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:46:28,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:46:28,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:46:28,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:46:28,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:46:28,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:46:28,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:46:28,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:46:28,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2022-12-14 05:46:28,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:46:28,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:46:28,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:46:28,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:46:28,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:46:28,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:46:28,806 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:46:28,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:46:28,807 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:46:28,807 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:46:28,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:46:28,807 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:46:28,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:46:28,808 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:46:28,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:46:28,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:46:28,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:46:28,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:46:28,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:46:28,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:46:28,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:46:28,810 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:46:28,810 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:46:28,810 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:46:28,810 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:46:28,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:46:28,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:46:28,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:46:28,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:46:28,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:46:28,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:46:28,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:46:28,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:46:28,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:46:28,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:46:28,812 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:46:28,813 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:46:28,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:46:28,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:46:28,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:46:28,813 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 [2022-12-14 05:46:29,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:46:29,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:46:29,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:46:29,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:46:29,058 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:46:29,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-12-14 05:46:31,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:46:31,839 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:46:31,839 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-12-14 05:46:31,845 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data/f4f1b4a1a/42d7e3831adc41fdbc4f8afd7d77614d/FLAG67e46c845 [2022-12-14 05:46:31,859 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/data/f4f1b4a1a/42d7e3831adc41fdbc4f8afd7d77614d [2022-12-14 05:46:31,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:46:31,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:46:31,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:46:31,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:46:31,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:46:31,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:31" (1/1) ... [2022-12-14 05:46:31,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79458a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:31, skipping insertion in model container [2022-12-14 05:46:31,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:31" (1/1) ... [2022-12-14 05:46:31,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:46:31,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:46:31,997 WARN L237 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-12-14 05:46:32,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:46:32,022 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:46:32,032 WARN L237 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_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-12-14 05:46:32,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:46:32,049 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:46:32,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32 WrapperNode [2022-12-14 05:46:32,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:46:32,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:46:32,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:46:32,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:46:32,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,075 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-14 05:46:32,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:46:32,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:46:32,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:46:32,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:46:32,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:46:32,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:46:32,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:46:32,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:46:32,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (1/1) ... [2022-12-14 05:46:32,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:46:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:32,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:46:32,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:46:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:46:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 05:46:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:46:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:46:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-12-14 05:46:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-12-14 05:46:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:46:32,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 05:46:32,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:46:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:46:32,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 05:46:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 05:46:32,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:46:32,245 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:46:32,247 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:46:32,422 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:46:32,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:46:32,427 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:46:32,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:32 BoogieIcfgContainer [2022-12-14 05:46:32,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:46:32,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:46:32,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:46:32,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:46:32,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:46:31" (1/3) ... [2022-12-14 05:46:32,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221578fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:32, skipping insertion in model container [2022-12-14 05:46:32,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:32" (2/3) ... [2022-12-14 05:46:32,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221578fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:32, skipping insertion in model container [2022-12-14 05:46:32,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:32" (3/3) ... [2022-12-14 05:46:32,434 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2022-12-14 05:46:32,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:46:32,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 05:46:32,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:46:32,490 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;@38e5903c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:46:32,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 05:46:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 05:46:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 05:46:32,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:32,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:32,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:32,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1346921732, now seen corresponding path program 1 times [2022-12-14 05:46:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:46:32,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764093818] [2022-12-14 05:46:32,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:32,514 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 [2022-12-14 05:46:32,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:46:32,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:46:32,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:32,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 05:46:32,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:46:32,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:46:32,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:46:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764093818] [2022-12-14 05:46:32,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764093818] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:32,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:32,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:46:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111207745] [2022-12-14 05:46:32,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:46:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:46:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:46:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:46:32,628 INFO L87 Difference]: Start difference. First operand has 46 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:46:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:32,650 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2022-12-14 05:46:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:46:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-12-14 05:46:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:32,659 INFO L225 Difference]: With dead ends: 86 [2022-12-14 05:46:32,659 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 05:46:32,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:46:32,666 INFO L413 NwaCegarLoop]: 49 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, 49 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 [2022-12-14 05:46:32,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 05:46:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 05:46:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:46:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-12-14 05:46:32,698 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2022-12-14 05:46:32,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:32,698 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-12-14 05:46:32,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:46:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-12-14 05:46:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 05:46:32,699 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:32,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:32,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:32,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:32,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1031497992, now seen corresponding path program 1 times [2022-12-14 05:46:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:46:32,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825981758] [2022-12-14 05:46:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:32,902 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 [2022-12-14 05:46:32,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:46:32,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:46:32,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:32,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:46:32,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:33,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:33,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:46:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825981758] [2022-12-14 05:46:33,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825981758] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [240335328] [2022-12-14 05:46:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:33,156 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:46:33,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:46:33,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:46:33,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 05:46:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:33,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:46:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:33,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:33,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [240335328] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:33,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249678482] [2022-12-14 05:46:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:33,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:33,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:46:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:33,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:46:33,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:33,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:33,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249678482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:33,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:46:33,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-12-14 05:46:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538368076] [2022-12-14 05:46:33,482 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:33,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:33,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:46:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:33,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:33,484 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 05:46:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:33,550 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-12-14 05:46:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:46:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16 [2022-12-14 05:46:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:33,552 INFO L225 Difference]: With dead ends: 32 [2022-12-14 05:46:33,552 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 05:46:33,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:46:33,554 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:33,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 05:46:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 05:46:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:46:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-12-14 05:46:33,559 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2022-12-14 05:46:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:33,561 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-12-14 05:46:33,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 05:46:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-12-14 05:46:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 05:46:33,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:33,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:33,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 05:46:33,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:33,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:46:34,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:34,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash 551123433, now seen corresponding path program 1 times [2022-12-14 05:46:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:46:34,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951049466] [2022-12-14 05:46:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:34,170 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 [2022-12-14 05:46:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:46:34,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:46:34,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:34,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:46:34,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:46:34,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:46:34,253 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:46:34,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951049466] [2022-12-14 05:46:34,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951049466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:34,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:34,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:46:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548909265] [2022-12-14 05:46:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:34,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:46:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:46:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:46:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:46:34,254 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:34,350 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-12-14 05:46:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:46:34,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-12-14 05:46:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:34,352 INFO L225 Difference]: With dead ends: 45 [2022-12-14 05:46:34,352 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 05:46:34,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:46:34,353 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:34,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 140 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 05:46:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-12-14 05:46:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-12-14 05:46:34,361 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 33 [2022-12-14 05:46:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:34,361 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-12-14 05:46:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-12-14 05:46:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 05:46:34,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:34,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:34,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 05:46:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:34,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash -95048641, now seen corresponding path program 1 times [2022-12-14 05:46:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:46:34,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423833094] [2022-12-14 05:46:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:34,567 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 [2022-12-14 05:46:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:46:34,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:46:34,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:34,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:46:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:46:34,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:46:34,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:46:34,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423833094] [2022-12-14 05:46:34,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423833094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:34,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:34,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:46:34,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583026500] [2022-12-14 05:46:34,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:46:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:46:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:46:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:46:34,692 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:34,752 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-12-14 05:46:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:46:34,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-12-14 05:46:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:34,754 INFO L225 Difference]: With dead ends: 44 [2022-12-14 05:46:34,754 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 05:46:34,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:34,755 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:34,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 05:46:34,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-12-14 05:46:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-12-14 05:46:34,762 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2022-12-14 05:46:34,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:34,763 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-12-14 05:46:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-12-14 05:46:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 05:46:34,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:34,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:34,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 05:46:34,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:34,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1626860818, now seen corresponding path program 1 times [2022-12-14 05:46:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:46:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703918553] [2022-12-14 05:46:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:34,971 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 [2022-12-14 05:46:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:46:34,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:46:34,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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)] Waiting until timeout for monitored process [2022-12-14 05:46:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:35,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:46:35,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 05:46:35,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 05:46:35,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:46:35,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703918553] [2022-12-14 05:46:35,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703918553] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:35,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:46:35,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-12-14 05:46:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560405178] [2022-12-14 05:46:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:35,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:46:35,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:46:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:46:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:46:35,243 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:35,398 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2022-12-14 05:46:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:46:35,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-12-14 05:46:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:35,400 INFO L225 Difference]: With dead ends: 56 [2022-12-14 05:46:35,400 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 05:46:35,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:46:35,401 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:35,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 05:46:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2022-12-14 05:46:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:46:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-12-14 05:46:35,405 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 50 [2022-12-14 05:46:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:35,406 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-12-14 05:46:35,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:46:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-12-14 05:46:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 05:46:35,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:35,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:35,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 05:46:35,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:35,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 05:46:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:35,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1106916314, now seen corresponding path program 1 times [2022-12-14 05:46:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:46:35,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856065923] [2022-12-14 05:46:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:35,612 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 [2022-12-14 05:46:35,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:46:35,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:46:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:35,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:46:35,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:46:35,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:46:35,941 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:46:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856065923] [2022-12-14 05:46:35,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856065923] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [683784917] [2022-12-14 05:46:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:35,941 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:46:35,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:46:35,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:46:35,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 05:46:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:46:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:46:36,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:46:36,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [683784917] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:36,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331148842] [2022-12-14 05:46:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:36,122 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:36,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:46:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:36,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:46:36,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:46:36,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:46:36,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331148842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:36,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:46:36,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 13 [2022-12-14 05:46:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878759205] [2022-12-14 05:46:36,266 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:36,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:46:36,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:46:36,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:46:36,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-14 05:46:36,269 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 05:46:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:36,761 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2022-12-14 05:46:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 05:46:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 51 [2022-12-14 05:46:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:36,763 INFO L225 Difference]: With dead ends: 79 [2022-12-14 05:46:36,763 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:46:36,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:46:36,764 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 107 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:36,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 274 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:46:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:46:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:46:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-14 05:46:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:46:36,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2022-12-14 05:46:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:36,765 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:46:36,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 05:46:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:46:36,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:46:36,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-14 05:46:36,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-14 05:46:36,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-14 05:46:36,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-14 05:46:36,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-14 05:46:36,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-14 05:46:36,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 05:46:36,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:46:37,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 05:46:37,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:46:37,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:46:37,664 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:46:37,664 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:46:37,664 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 05:46:37,664 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:46:37,664 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L902 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: true [2022-12-14 05:46:37,665 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) [2022-12-14 05:46:37,665 INFO L895 garLoopResultBuilder]: At program point L47-2(line 47) the Hoare annotation is: (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) [2022-12-14 05:46:37,665 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L899 garLoopResultBuilder]: For program point L47-3(line 47) no Hoare annotation was computed. [2022-12-14 05:46:37,665 INFO L902 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: true [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 40 54) the Hoare annotation is: true [2022-12-14 05:46:37,666 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2022-12-14 05:46:37,666 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 38) the Hoare annotation is: true [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 38) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-12-14 05:46:37,667 INFO L899 garLoopResultBuilder]: For program point L26-2(line 26) no Hoare annotation was computed. [2022-12-14 05:46:37,668 INFO L895 garLoopResultBuilder]: At program point L26-4(lines 26 27) the Hoare annotation is: (and (or (not (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) |check_#in~x|)) (_ bv2147483647 33))) (bvsle (bvadd ((_ sign_extend 1) check_~x) (_ bv1 33)) (_ bv2147483647 33)) (not (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) (bvadd |check_#in~x| (_ bv1 32)))) (_ bv2147483647 33)))) (or (= check_~x (_ bv1 32)) (= check_~x (_ bv0 32)) (not (= |check_#in~x| (_ bv0 32)))) (or (not (= |check_#in~x| (_ bv1 32))) (bvsle (bvadd ((_ sign_extend 1) (bvadd check_~x (_ bv1 32))) (_ bv1 33)) (_ bv2147483647 33)))) [2022-12-14 05:46:37,668 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (or (not (= |check_#in~x| (_ bv1 32))) (= check_~x (_ bv1 32))) (bvsle (bvadd ((_ sign_extend 1) check_~x) (_ bv1 33)) (_ bv2147483647 33)) (or (not (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) |check_#in~x|)) (_ bv2147483647 33))) (bvsle (bvadd ((_ sign_extend 1) (bvadd check_~x (_ bv1 32))) (_ bv1 33)) (_ bv2147483647 33)) (not (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) (bvadd |check_#in~x| (_ bv1 32)))) (_ bv2147483647 33)))) (or (and (not (bvsge (_ bv0 32) check_~y)) (= check_~x (_ bv0 32))) (not (= |check_#in~x| (_ bv0 32)))) (bvsle (_ bv6442450944 33) (bvadd (_ bv8589934591 33) ((_ sign_extend 1) check_~y)))) [2022-12-14 05:46:37,668 INFO L895 garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (and (or (not (= |check_#in~x| (_ bv1 32))) (= check_~x (_ bv1 32))) (bvsle (bvadd ((_ sign_extend 1) check_~x) (_ bv1 33)) (_ bv2147483647 33)) (or (not (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) |check_#in~x|)) (_ bv2147483647 33))) (bvsle (bvadd ((_ sign_extend 1) (bvadd check_~x (_ bv1 32))) (_ bv1 33)) (_ bv2147483647 33)) (not (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) (bvadd |check_#in~x| (_ bv1 32)))) (_ bv2147483647 33)))) (or (and (not (bvsge (_ bv0 32) check_~y)) (= check_~x (_ bv0 32))) (not (= |check_#in~x| (_ bv0 32)))) (bvsle (_ bv6442450944 33) (bvadd (_ bv8589934591 33) ((_ sign_extend 1) check_~y)))) [2022-12-14 05:46:37,668 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 38) no Hoare annotation was computed. [2022-12-14 05:46:37,668 INFO L902 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-12-14 05:46:37,668 INFO L899 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2022-12-14 05:46:37,669 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-12-14 05:46:37,669 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-12-14 05:46:37,669 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2022-12-14 05:46:37,669 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-12-14 05:46:37,671 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-14 05:46:37,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:46:37,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:46:37 BoogieIcfgContainer [2022-12-14 05:46:37,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:46:37,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:46:37,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:46:37,678 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:46:37,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:32" (3/4) ... [2022-12-14 05:46:37,680 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:46:37,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 05:46:37,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2022-12-14 05:46:37,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 05:46:37,688 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-14 05:46:37,688 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 05:46:37,688 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 05:46:37,688 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:46:37,716 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:46:37,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:46:37,717 INFO L158 Benchmark]: Toolchain (without parser) took 5853.63ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 44.5MB in the end (delta: 16.2MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-12-14 05:46:37,717 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:46:37,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.62ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 49.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 05:46:37,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.73ms. Allocated memory is still 81.8MB. Free memory was 49.1MB in the beginning and 47.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:46:37,718 INFO L158 Benchmark]: Boogie Preprocessor took 18.80ms. Allocated memory is still 81.8MB. Free memory was 47.6MB in the beginning and 46.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:46:37,718 INFO L158 Benchmark]: RCFGBuilder took 333.47ms. Allocated memory is still 81.8MB. Free memory was 46.0MB in the beginning and 53.1MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 05:46:37,718 INFO L158 Benchmark]: TraceAbstraction took 5247.51ms. Allocated memory is still 81.8MB. Free memory was 52.4MB in the beginning and 47.9MB in the end (delta: 4.5MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-12-14 05:46:37,719 INFO L158 Benchmark]: Witness Printer took 38.48ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 44.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:46:37,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.62ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 49.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.73ms. Allocated memory is still 81.8MB. Free memory was 49.1MB in the beginning and 47.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.80ms. Allocated memory is still 81.8MB. Free memory was 47.6MB in the beginning and 46.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.47ms. Allocated memory is still 81.8MB. Free memory was 46.0MB in the beginning and 53.1MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5247.51ms. Allocated memory is still 81.8MB. Free memory was 52.4MB in the beginning and 47.9MB in the end (delta: 4.5MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * Witness Printer took 38.48ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 44.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 589 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 307 IncrementalHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 216 mSDtfsCounter, 307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 592 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 89 PreInvPairs, 137 NumberOfFragments, 179 HoareAnnotationTreeSize, 89 FomulaSimplifications, 294 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 215 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 568 ConstructedInterpolants, 0 QuantifiedInterpolants, 1292 SizeOfPredicates, 28 NumberOfNonLiveVariables, 858 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 268/336 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 05:46:37,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc10220-0d67-4a60-bc3b-3a6ac6d9b9e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE