./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6b05ef27bc57afa4e7776361d8c320f2c4d1efbfc422ad92c7a9c3c2e549e04 --- 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-4e7fbc6 [2022-11-23 15:59:22,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:59:22,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:59:22,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:59:22,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:59:22,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:59:22,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:59:22,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:59:22,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:59:22,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:59:22,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:59:22,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:59:22,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:59:22,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:59:22,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:59:22,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:59:22,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:59:22,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:59:22,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:59:22,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:59:22,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:59:22,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:59:22,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:59:22,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:59:22,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:59:22,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:59:22,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:59:22,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:59:22,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:59:22,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:59:22,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:59:22,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:59:22,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:59:22,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:59:22,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:59:22,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:59:22,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:59:22,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:59:22,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:59:22,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:59:22,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:59:22,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:59:22,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:59:22,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:59:22,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:59:22,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:59:22,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:59:22,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:59:22,705 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:59:22,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:59:22,705 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:59:22,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:59:22,706 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:59:22,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:59:22,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:59:22,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:59:22,706 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:59:22,707 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:59:22,707 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:59:22,707 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:59:22,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:59:22,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:59:22,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:59:22,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:59:22,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:59:22,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:59:22,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:59:22,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:59:22,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:59:22,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:59:22,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:59:22,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:59:22,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:59:22,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:59:22,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:22,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:59:22,712 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:59:22,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:59:22,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:59:22,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:59:22,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:59:22,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:59:22,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:59:22,713 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_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b05ef27bc57afa4e7776361d8c320f2c4d1efbfc422ad92c7a9c3c2e549e04 [2022-11-23 15:59:22,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:59:22,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:59:22,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:59:22,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:59:22,973 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:59:22,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound10.c [2022-11-23 15:59:26,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:59:26,220 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:59:26,220 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound10.c [2022-11-23 15:59:26,236 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/data/cc1d1f354/a1800444c28e492f821688cd04205a26/FLAG6c96e1f4a [2022-11-23 15:59:26,256 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/data/cc1d1f354/a1800444c28e492f821688cd04205a26 [2022-11-23 15:59:26,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:59:26,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:59:26,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:26,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:59:26,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:59:26,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636542d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26, skipping insertion in model container [2022-11-23 15:59:26,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:59:26,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:59:26,438 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_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound10.c[535,548] [2022-11-23 15:59:26,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:26,468 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:59:26,481 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_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound10.c[535,548] [2022-11-23 15:59:26,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:26,506 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:59:26,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26 WrapperNode [2022-11-23 15:59:26,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:26,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:26,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:59:26,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:59:26,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,540 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-23 15:59:26,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:26,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:59:26,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:59:26,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:59:26,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:59:26,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:59:26,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:59:26,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:59:26,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (1/1) ... [2022-11-23 15:59:26,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:26,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:26,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:59:26,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:59:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:59:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:59:26,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:59:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:59:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:59:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:59:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:59:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:59:26,701 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:59:26,703 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:59:26,859 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:59:26,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:59:26,882 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 15:59:26,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26 BoogieIcfgContainer [2022-11-23 15:59:26,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:59:26,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:59:26,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:59:26,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:59:26,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:26" (1/3) ... [2022-11-23 15:59:26,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f830551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:26, skipping insertion in model container [2022-11-23 15:59:26,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:26" (2/3) ... [2022-11-23 15:59:26,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f830551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:26, skipping insertion in model container [2022-11-23 15:59:26,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26" (3/3) ... [2022-11-23 15:59:26,895 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound10.c [2022-11-23 15:59:26,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:59:26,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:59:26,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:59:26,975 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;@7b7f58c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:59:26,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:59:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 15:59:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:59:26,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:26,989 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:26,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:26,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1333631252, now seen corresponding path program 1 times [2022-11-23 15:59:27,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:27,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504537435] [2022-11-23 15:59:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:27,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:27,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:59:27,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485867450] [2022-11-23 15:59:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:27,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:27,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:27,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:59:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:27,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 15:59:27,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:59:27,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:27,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:27,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504537435] [2022-11-23 15:59:27,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:59:27,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485867450] [2022-11-23 15:59:27,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485867450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:27,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:27,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:59:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138024567] [2022-11-23 15:59:27,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:59:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:59:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:59:27,530 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 15:59:29,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 15:59:33,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 15:59:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:33,589 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-11-23 15:59:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:59:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-23 15:59:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:33,600 INFO L225 Difference]: With dead ends: 61 [2022-11-23 15:59:33,601 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 15:59:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:59:33,608 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:33,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 15:59:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 15:59:33,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-23 15:59:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 15:59:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2022-11-23 15:59:33,664 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 20 [2022-11-23 15:59:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:33,665 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2022-11-23 15:59:33,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 15:59:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2022-11-23 15:59:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 15:59:33,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:33,668 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:33,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:33,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 15:59:33,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1820027827, now seen corresponding path program 1 times [2022-11-23 15:59:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:33,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706766262] [2022-11-23 15:59:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:33,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:33,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:59:33,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074499571] [2022-11-23 15:59:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:33,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:33,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:33,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:33,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:59:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:33,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:59:34,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:59:34,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:59:34,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:34,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706766262] [2022-11-23 15:59:34,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:59:34,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074499571] [2022-11-23 15:59:34,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074499571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:34,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519371486] [2022-11-23 15:59:34,439 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-23 15:59:34,439 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:34,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:34,454 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:34,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:35,197 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-23 15:59:35,216 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-23 15:59:35,256 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:59:37,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1519371486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:37,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:59:37,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 7] total 23 [2022-11-23 15:59:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128152923] [2022-11-23 15:59:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 15:59:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 15:59:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-11-23 15:59:37,087 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 15:59:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:37,491 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2022-11-23 15:59:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 15:59:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 26 [2022-11-23 15:59:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:37,493 INFO L225 Difference]: With dead ends: 45 [2022-11-23 15:59:37,493 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:59:37,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-11-23 15:59:37,495 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:37,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 45 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:59:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:59:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-23 15:59:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 15:59:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2022-11-23 15:59:37,524 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 26 [2022-11-23 15:59:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:37,524 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2022-11-23 15:59:37,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 15:59:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2022-11-23 15:59:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:59:37,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:37,526 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:37,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:37,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 15:59:37,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:37,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1140063161, now seen corresponding path program 1 times [2022-11-23 15:59:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518632425] [2022-11-23 15:59:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:37,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:59:37,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443714057] [2022-11-23 15:59:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:37,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:37,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:37,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:37,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:59:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:37,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:59:37,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:59:41,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 15:59:41,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518632425] [2022-11-23 15:59:41,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:59:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443714057] [2022-11-23 15:59:41,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443714057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1854502084] [2022-11-23 15:59:41,936 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 15:59:41,937 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:41,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:41,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:41,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:42,977 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 84 for LOIs [2022-11-23 15:59:43,100 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-23 15:59:43,116 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:59:46,999 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '752#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:59:46,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:59:46,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:59:46,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2022-11-23 15:59:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42276605] [2022-11-23 15:59:47,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 15:59:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 15:59:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 15:59:47,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=538, Unknown=1, NotChecked=0, Total=650 [2022-11-23 15:59:47,001 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:59:53,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 15:59:54,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 15:59:56,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 15:59:57,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 15:59:59,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:00,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:04,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:06,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:07,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:09,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:10,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:12,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:13,107 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2022-11-23 16:00:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 34 [2022-11-23 16:00:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:13,109 INFO L225 Difference]: With dead ends: 64 [2022-11-23 16:00:13,109 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 16:00:13,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=128, Invalid=627, Unknown=1, NotChecked=0, Total=756 [2022-11-23 16:00:13,111 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:13,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 92 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 26.0s Time] [2022-11-23 16:00:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 16:00:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-11-23 16:00:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 39 states have internal predecessors, (50), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 16:00:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-11-23 16:00:13,148 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 34 [2022-11-23 16:00:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:13,149 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-11-23 16:00:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 16:00:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-11-23 16:00:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 16:00:13,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:13,151 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:13,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:13,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:13,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1010663076, now seen corresponding path program 1 times [2022-11-23 16:00:13,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:13,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568814789] [2022-11-23 16:00:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:13,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:13,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 16:00:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150068204] [2022-11-23 16:00:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:13,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:13,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:13,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:00:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:13,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:00:13,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 16:00:13,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 16:00:13,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568814789] [2022-11-23 16:00:13,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 16:00:13,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150068204] [2022-11-23 16:00:13,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150068204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:13,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [819734413] [2022-11-23 16:00:13,671 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-23 16:00:13,671 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:13,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:13,672 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:13,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:16,332 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 16:00:16,338 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-23 16:00:16,354 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:21,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1254#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:21,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:21,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 16:00:21,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-23 16:00:21,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902871828] [2022-11-23 16:00:21,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:21,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:00:21,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:00:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-11-23 16:00:21,073 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 16:00:21,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:21,246 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-11-23 16:00:21,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:00:21,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-11-23 16:00:21,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:21,248 INFO L225 Difference]: With dead ends: 66 [2022-11-23 16:00:21,249 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 16:00:21,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-11-23 16:00:21,250 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 23 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:21,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 58 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 16:00:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-23 16:00:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 16:00:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2022-11-23 16:00:21,288 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 48 [2022-11-23 16:00:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:21,288 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2022-11-23 16:00:21,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 16:00:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2022-11-23 16:00:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 16:00:21,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:21,291 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:21,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 16:00:21,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:21,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:21,497 INFO L85 PathProgramCache]: Analyzing trace with hash -224296803, now seen corresponding path program 1 times [2022-11-23 16:00:21,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:21,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349339665] [2022-11-23 16:00:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:21,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:21,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 16:00:21,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807711076] [2022-11-23 16:00:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:21,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:21,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:21,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:00:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:21,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 16:00:21,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-23 16:00:21,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-23 16:00:22,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349339665] [2022-11-23 16:00:22,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 16:00:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807711076] [2022-11-23 16:00:22,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807711076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1753101619] [2022-11-23 16:00:22,238 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-23 16:00:22,239 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:22,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:22,239 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:22,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:25,474 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 16:00:25,478 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-23 16:00:25,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:36,491 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1800#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:36,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:36,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 16:00:36,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2022-11-23 16:00:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538291879] [2022-11-23 16:00:36,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:36,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:00:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:00:36,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=737, Unknown=1, NotChecked=0, Total=870 [2022-11-23 16:00:36,494 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:00:38,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:40,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:42,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-23 16:00:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:42,804 INFO L93 Difference]: Finished difference Result 149 states and 213 transitions. [2022-11-23 16:00:42,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:00:42,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2022-11-23 16:00:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:42,806 INFO L225 Difference]: With dead ends: 149 [2022-11-23 16:00:42,806 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 16:00:42,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=148, Invalid=843, Unknown=1, NotChecked=0, Total=992 [2022-11-23 16:00:42,808 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:42,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 106 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 181 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 16:00:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 16:00:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 16:00:42,810 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) [2022-11-23 16:00:42,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 16:00:42,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-11-23 16:00:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:42,811 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 16:00:42,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:00:42,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 16:00:42,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 16:00:42,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:00:42,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:43,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:43,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 16:00:47,008 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)) (.cse0 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|))) (let ((.cse3 (div (+ .cse1 .cse2 (* (- 2) |ULTIMATE.start_main_~u~0#1|) (- .cse0)) 4)) (.cse5 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) .cse0 (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ .cse1 .cse2)) (= 13 (select |#length| 2)) (<= .cse3 |ULTIMATE.start_main_~A~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse4 0))) (+ (- 2) .cse4) .cse4)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse5 0) 48) (not (< .cse3 |ULTIMATE.start_main_~A~0#1|)) (= (select .cse5 1) 0) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-23 16:00:47,009 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,009 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-11-23 16:00:47,009 INFO L895 garLoopResultBuilder]: At program point L48-1(lines 35 55) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,010 INFO L895 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1)) (.cse14 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse14 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0))) (.cse3 (= 13 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (not (= (ite (= (let ((.cse19 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse19 0))) (+ (- 2) .cse19) .cse19)) 1) 1 0) 0))) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse15 (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~v~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse9 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse9 .cse9))) .cse10 .cse11 .cse12 .cse13 (= (+ .cse14 1) |ULTIMATE.start_main_~u~0#1|) .cse15 .cse16 .cse17) (and .cse0 .cse1 (not (< |ULTIMATE.start_main_~r~0#1| 0)) .cse2 (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse10 .cse11 .cse12 .cse13 .cse15 .cse16 .cse17)))) [2022-11-23 16:00:47,010 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,010 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1)) (.cse14 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse14 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0))) (.cse3 (= 13 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (not (= (ite (= (let ((.cse19 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse19 0))) (+ (- 2) .cse19) .cse19)) 1) 1 0) 0))) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse15 (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~v~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse9 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse9 .cse9))) .cse10 .cse11 .cse12 .cse13 (= (+ .cse14 1) |ULTIMATE.start_main_~u~0#1|) .cse15 .cse16 .cse17) (and .cse0 .cse1 (not (< |ULTIMATE.start_main_~r~0#1| 0)) .cse2 (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse10 .cse11 .cse12 .cse13 .cse15 .cse16 .cse17)))) [2022-11-23 16:00:47,010 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2022-11-23 16:00:47,010 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 16:00:47,010 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-23 16:00:47,011 INFO L902 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: true [2022-11-23 16:00:47,011 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,011 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2022-11-23 16:00:47,011 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,011 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2022-11-23 16:00:47,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 16:00:47,012 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~R~0#1| 2147483648)) (<= |ULTIMATE.start_main_~R~0#1| 2147483647) (= 13 (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) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,012 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= 13 (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) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,012 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 10)) 1 0) 0)) (= 13 (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) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 16:00:47,012 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-11-23 16:00:47,012 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-11-23 16:00:47,012 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-11-23 16:00:47,012 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-11-23 16:00:47,013 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-11-23 16:00:47,013 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-11-23 16:00:47,013 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-11-23 16:00:47,013 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-11-23 16:00:47,016 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-23 16:00:47,018 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:00:47,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:00:47 BoogieIcfgContainer [2022-11-23 16:00:47,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:00:47,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:00:47,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:00:47,041 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:00:47,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26" (3/4) ... [2022-11-23 16:00:47,045 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 16:00:47,050 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-23 16:00:47,051 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 16:00:47,060 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-23 16:00:47,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 16:00:47,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 16:00:47,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 16:00:47,097 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:00:47,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:00:47,098 INFO L158 Benchmark]: Toolchain (without parser) took 80835.49ms. Allocated memory was 134.2MB in the beginning and 207.6MB in the end (delta: 73.4MB). Free memory was 95.6MB in the beginning and 106.0MB in the end (delta: -10.4MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2022-11-23 16:00:47,099 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:00:47,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.72ms. Allocated memory is still 134.2MB. Free memory was 95.6MB in the beginning and 85.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 16:00:47,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.40ms. Allocated memory is still 134.2MB. Free memory was 84.7MB in the beginning and 83.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:00:47,100 INFO L158 Benchmark]: Boogie Preprocessor took 23.03ms. Allocated memory is still 134.2MB. Free memory was 83.4MB in the beginning and 82.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:00:47,100 INFO L158 Benchmark]: RCFGBuilder took 319.71ms. Allocated memory is still 134.2MB. Free memory was 82.2MB in the beginning and 69.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 16:00:47,100 INFO L158 Benchmark]: TraceAbstraction took 80152.19ms. Allocated memory was 134.2MB in the beginning and 207.6MB in the end (delta: 73.4MB). Free memory was 69.2MB in the beginning and 108.1MB in the end (delta: -38.9MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. [2022-11-23 16:00:47,101 INFO L158 Benchmark]: Witness Printer took 57.18ms. Allocated memory is still 207.6MB. Free memory was 108.1MB in the beginning and 106.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:00:47,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.72ms. Allocated memory is still 134.2MB. Free memory was 95.6MB in the beginning and 85.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.40ms. Allocated memory is still 134.2MB. Free memory was 84.7MB in the beginning and 83.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.03ms. Allocated memory is still 134.2MB. Free memory was 83.4MB in the beginning and 82.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.71ms. Allocated memory is still 134.2MB. Free memory was 82.2MB in the beginning and 69.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 80152.19ms. Allocated memory was 134.2MB in the beginning and 207.6MB in the end (delta: 73.4MB). Free memory was 69.2MB in the beginning and 108.1MB in the end (delta: -38.9MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. * Witness Printer took 57.18ms. Allocated memory is still 207.6MB. Free memory was 108.1MB in the beginning and 106.0MB in the end (delta: 2.1MB). 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 80.1s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 38.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 384 SdHoareTripleChecker+Invalid, 38.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 637 IncrementalHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 111 mSDtfsCounter, 637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 505 GetRequests, 379 SyntacticMatches, 21 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 23.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=4, InterpolantAutomatonStates: 42, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 59 PreInvPairs, 111 NumberOfFragments, 1742 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 8655 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 1581 SizeOfPredicates, 21 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 296/318 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: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 16, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 54, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 18, DOMAIN_JOIN_TIME: 0.2s, 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: 21, 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: 10, CALL_SUMMARIZER_CACHE_MISSES: 2, 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: 222, DAG_COMPRESSION_RETAINED_NODES: 58, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && !((if 0 <= R && R <= 10 then 1 else 0) == 0)) && 13 == unknown-#length-unknown[2]) && v == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && A + r == (-1 + u) / 2 * ((-1 + u) / 2)) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 * R + 1 == u) && !((if A <= 10 && 0 <= A then 1 else 0) == 0)) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && !(r < 0)) && !((if 0 <= R && R <= 10 then 1 else 0) == 0)) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && !((if A <= 10 && 0 <= A then 1 else 0) == 0)) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && !((if 0 <= R && R <= 10 then 1 else 0) == 0)) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && !((if A <= 10 && 0 <= A then 1 else 0) == 0)) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && !((if 0 <= R && R <= 10 then 1 else 0) == 0)) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && !((if A <= 10 && 0 <= A then 1 else 0) == 0)) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 16:00:47,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4fc158-3c43-4da8-a2ca-2d3e8fe60393/bin/utaipan-Q6hlc19bkW/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