./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:58:54,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:58:54,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 17:58:54,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:58:54,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:58:54,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:58:54,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:58:54,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:58:54,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:58:54,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:58:54,887 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:58:54,887 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:58:54,888 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:58:54,888 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:58:54,888 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:58:54,889 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:58:54,889 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:58:54,890 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:58:54,890 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:58:54,891 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:58:54,891 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:58:54,892 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:58:54,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:58:54,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:58:54,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:58:54,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:58:54,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:58:54,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:58:54,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:58:54,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:58:54,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:58:54,896 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:58:54,897 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:58:54,897 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:58:54,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:58:54,898 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:58:54,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:58:54,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:58:54,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:58:54,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:54,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:58:54,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:58:54,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:58:54,899 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:58:54,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:58:54,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:58:54,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:58:54,900 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:58:54,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:58:54,900 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 [2023-12-02 17:58:55,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:58:55,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:58:55,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:58:55,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:58:55,158 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:58:55,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2023-12-02 17:58:57,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:58:58,048 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:58:58,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2023-12-02 17:58:58,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/data/ee674acfc/d98006f49b9542f4949889290c3f8aad/FLAGb48c58a4a [2023-12-02 17:58:58,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/data/ee674acfc/d98006f49b9542f4949889290c3f8aad [2023-12-02 17:58:58,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:58:58,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:58:58,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:58,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:58:58,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:58:58,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7755d3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58, skipping insertion in model container [2023-12-02 17:58:58,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:58:58,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:58,255 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:58:58,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:58,286 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:58:58,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58 WrapperNode [2023-12-02 17:58:58,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:58,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:58:58,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:58:58,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:58:58,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,326 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2023-12-02 17:58:58,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:58:58,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:58:58,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:58:58,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:58:58,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:58:58,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:58:58,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:58:58,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:58:58,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (1/1) ... [2023-12-02 17:58:58,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:58:58,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:58:58,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:58:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:58:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:58:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:58:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:58:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:58:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:58:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:58:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:58:58,479 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:58:58,481 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:58:58,823 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:58:58,857 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:58:58,858 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:58:58,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:58:58 BoogieIcfgContainer [2023-12-02 17:58:58,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:58:58,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:58:58,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:58:58,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:58:58,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:58:58" (1/3) ... [2023-12-02 17:58:58,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d003d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:58:58, skipping insertion in model container [2023-12-02 17:58:58,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:58" (2/3) ... [2023-12-02 17:58:58,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d003d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:58:58, skipping insertion in model container [2023-12-02 17:58:58,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:58:58" (3/3) ... [2023-12-02 17:58:58,868 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2023-12-02 17:58:58,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:58:58,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-12-02 17:58:58,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:58:58,931 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=LoopHeads, 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;@67716ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:58:58,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-12-02 17:58:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 125 states have internal predecessors, (128), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:58:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 17:58:58,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:58,941 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:58,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:58:58,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash 688830049, now seen corresponding path program 1 times [2023-12-02 17:58:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:58,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514588874] [2023-12-02 17:58:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:58:59,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514588874] [2023-12-02 17:58:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514588874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:59,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:59,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:58:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974882306] [2023-12-02 17:58:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:58:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:59,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:58:59,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:58:59,182 INFO L87 Difference]: Start difference. First operand has 132 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 125 states have internal predecessors, (128), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:59,313 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2023-12-02 17:58:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:58:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 9 [2023-12-02 17:58:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:59,322 INFO L225 Difference]: With dead ends: 180 [2023-12-02 17:58:59,322 INFO L226 Difference]: Without dead ends: 125 [2023-12-02 17:58:59,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:58:59,329 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 118 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:59,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 72 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:58:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-02 17:58:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-02 17:58:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 66 states have (on average 1.8333333333333333) internal successors, (121), 119 states have internal predecessors, (121), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:58:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-12-02 17:58:59,372 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 9 [2023-12-02 17:58:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:59,373 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-12-02 17:58:59,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-12-02 17:58:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:58:59,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:59,375 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:59,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:58:59,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:58:59,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash -121104922, now seen corresponding path program 1 times [2023-12-02 17:58:59,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:59,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671170137] [2023-12-02 17:58:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:59,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:58:59,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671170137] [2023-12-02 17:58:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671170137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:58:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082466258] [2023-12-02 17:58:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:59,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:58:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:58:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:58:59,430 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:59,521 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2023-12-02 17:58:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:58:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 10 [2023-12-02 17:58:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:59,524 INFO L225 Difference]: With dead ends: 125 [2023-12-02 17:58:59,524 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 17:58:59,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:58:59,526 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 112 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:59,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 69 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:58:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 17:58:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 17:58:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 66 states have (on average 1.7727272727272727) internal successors, (117), 115 states have internal predecessors, (117), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:58:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2023-12-02 17:58:59,540 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 10 [2023-12-02 17:58:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:59,541 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2023-12-02 17:58:59,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2023-12-02 17:58:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 17:58:59,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:59,542 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:59,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:58:59,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:58:59,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash 540714755, now seen corresponding path program 1 times [2023-12-02 17:58:59,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:59,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687766014] [2023-12-02 17:58:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:58:59,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687766014] [2023-12-02 17:58:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687766014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:58:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739030383] [2023-12-02 17:58:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:58:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:58:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:58:59,607 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:59,730 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-12-02 17:58:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:58:59,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2023-12-02 17:58:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:59,732 INFO L225 Difference]: With dead ends: 121 [2023-12-02 17:58:59,733 INFO L226 Difference]: Without dead ends: 118 [2023-12-02 17:58:59,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:58:59,735 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:59,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 57 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:58:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-02 17:58:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-02 17:58:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 66 states have (on average 1.7272727272727273) internal successors, (114), 112 states have internal predecessors, (114), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:58:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2023-12-02 17:58:59,747 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 11 [2023-12-02 17:58:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:59,748 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2023-12-02 17:58:59,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2023-12-02 17:58:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:58:59,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:59,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:58:59,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:58:59,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -417711736, now seen corresponding path program 1 times [2023-12-02 17:58:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016447867] [2023-12-02 17:58:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:58:59,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016447867] [2023-12-02 17:58:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016447867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:58:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:58:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:58:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928899407] [2023-12-02 17:58:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:58:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:58:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:58:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:58:59,810 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:59,923 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-12-02 17:58:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:58:59,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-12-02 17:58:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:59,925 INFO L225 Difference]: With dead ends: 118 [2023-12-02 17:58:59,925 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 17:58:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:58:59,927 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 212 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:59,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 57 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:58:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 17:58:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-02 17:58:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 109 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:58:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2023-12-02 17:58:59,937 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 12 [2023-12-02 17:58:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:59,938 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2023-12-02 17:58:59,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:58:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2023-12-02 17:58:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 17:58:59,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:59,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:59,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:58:59,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:58:59,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1989018102, now seen corresponding path program 1 times [2023-12-02 17:58:59,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:59,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808292003] [2023-12-02 17:58:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:59,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:58:59,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112253397] [2023-12-02 17:58:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:58:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:58:59,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:58:59,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:59:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:00,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:59:00,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:00,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:00,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808292003] [2023-12-02 17:59:00,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112253397] [2023-12-02 17:59:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112253397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:00,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:00,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:59:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944811485] [2023-12-02 17:59:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:00,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:59:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:59:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:59:00,039 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:00,086 INFO L93 Difference]: Finished difference Result 218 states and 222 transitions. [2023-12-02 17:59:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:59:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-12-02 17:59:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:00,088 INFO L225 Difference]: With dead ends: 218 [2023-12-02 17:59:00,088 INFO L226 Difference]: Without dead ends: 212 [2023-12-02 17:59:00,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:59:00,090 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 95 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:00,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:59:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-02 17:59:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 140. [2023-12-02 17:59:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.6666666666666667) internal successors, (150), 133 states have internal predecessors, (150), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:59:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2023-12-02 17:59:00,105 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 14 [2023-12-02 17:59:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:00,105 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2023-12-02 17:59:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2023-12-02 17:59:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:59:00,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:00,106 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:00,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:00,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:00,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:00,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash -185947508, now seen corresponding path program 1 times [2023-12-02 17:59:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469575280] [2023-12-02 17:59:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:00,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:00,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642227918] [2023-12-02 17:59:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:00,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:00,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:00,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:59:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:00,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:59:00,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:00,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:00,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469575280] [2023-12-02 17:59:00,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:00,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642227918] [2023-12-02 17:59:00,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642227918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:00,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:00,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:59:00,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009587636] [2023-12-02 17:59:00,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:00,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:59:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:59:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:59:00,374 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:00,422 INFO L93 Difference]: Finished difference Result 243 states and 263 transitions. [2023-12-02 17:59:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:59:00,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-02 17:59:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:00,425 INFO L225 Difference]: With dead ends: 243 [2023-12-02 17:59:00,425 INFO L226 Difference]: Without dead ends: 237 [2023-12-02 17:59:00,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:59:00,426 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 93 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:00,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:59:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-02 17:59:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 189. [2023-12-02 17:59:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.6666666666666667) internal successors, (230), 181 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2023-12-02 17:59:00,442 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 16 [2023-12-02 17:59:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:00,443 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2023-12-02 17:59:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2023-12-02 17:59:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:59:00,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:00,444 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:00,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:59:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:00,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1693073166, now seen corresponding path program 1 times [2023-12-02 17:59:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553728555] [2023-12-02 17:59:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:00,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46289337] [2023-12-02 17:59:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:00,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:00,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:00,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:00,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:59:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:00,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:59:00,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:00,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:00,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:00,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553728555] [2023-12-02 17:59:00,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:00,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46289337] [2023-12-02 17:59:00,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46289337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:00,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221213061] [2023-12-02 17:59:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:00,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:00,735 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:00,880 INFO L93 Difference]: Finished difference Result 268 states and 311 transitions. [2023-12-02 17:59:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:59:00,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-02 17:59:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:00,882 INFO L225 Difference]: With dead ends: 268 [2023-12-02 17:59:00,882 INFO L226 Difference]: Without dead ends: 266 [2023-12-02 17:59:00,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:00,883 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 177 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:00,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 232 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:59:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-02 17:59:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 190. [2023-12-02 17:59:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 139 states have (on average 1.6546762589928057) internal successors, (230), 182 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 240 transitions. [2023-12-02 17:59:00,894 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 240 transitions. Word has length 18 [2023-12-02 17:59:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:00,895 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 240 transitions. [2023-12-02 17:59:00,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 240 transitions. [2023-12-02 17:59:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 17:59:00,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:00,896 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:00,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:01,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:01,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash 945660658, now seen corresponding path program 1 times [2023-12-02 17:59:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935599689] [2023-12-02 17:59:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:01,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:01,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175581921] [2023-12-02 17:59:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:01,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:01,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:01,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:59:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:01,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:59:01,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:01,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:01,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:01,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935599689] [2023-12-02 17:59:01,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:01,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175581921] [2023-12-02 17:59:01,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175581921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:01,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:01,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273716197] [2023-12-02 17:59:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:01,166 INFO L87 Difference]: Start difference. First operand 190 states and 240 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:01,312 INFO L93 Difference]: Finished difference Result 266 states and 309 transitions. [2023-12-02 17:59:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:59:01,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-02 17:59:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:01,315 INFO L225 Difference]: With dead ends: 266 [2023-12-02 17:59:01,315 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 17:59:01,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:01,316 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 172 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:01,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 234 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:59:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 17:59:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 191. [2023-12-02 17:59:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6428571428571428) internal successors, (230), 183 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 240 transitions. [2023-12-02 17:59:01,329 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 240 transitions. Word has length 19 [2023-12-02 17:59:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:01,330 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 240 transitions. [2023-12-02 17:59:01,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 240 transitions. [2023-12-02 17:59:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:59:01,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:01,331 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:01,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:59:01,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:01,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:01,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -749290608, now seen corresponding path program 1 times [2023-12-02 17:59:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273528539] [2023-12-02 17:59:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:01,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323494294] [2023-12-02 17:59:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:01,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:01,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:01,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:01,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:59:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:01,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:59:01,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:01,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:01,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:01,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273528539] [2023-12-02 17:59:01,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:01,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323494294] [2023-12-02 17:59:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323494294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:01,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:01,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:01,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901862047] [2023-12-02 17:59:01,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:01,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:01,607 INFO L87 Difference]: Start difference. First operand 191 states and 240 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:01,742 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2023-12-02 17:59:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:59:01,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 17:59:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:01,744 INFO L225 Difference]: With dead ends: 253 [2023-12-02 17:59:01,744 INFO L226 Difference]: Without dead ends: 251 [2023-12-02 17:59:01,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:01,745 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 194 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:01,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 233 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:59:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-02 17:59:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 191. [2023-12-02 17:59:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6214285714285714) internal successors, (227), 183 states have internal predecessors, (227), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 237 transitions. [2023-12-02 17:59:01,757 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 237 transitions. Word has length 20 [2023-12-02 17:59:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:01,757 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 237 transitions. [2023-12-02 17:59:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 237 transitions. [2023-12-02 17:59:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 17:59:01,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:01,758 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:01,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:59:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:01,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:01,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1753172300, now seen corresponding path program 1 times [2023-12-02 17:59:01,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:01,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419902798] [2023-12-02 17:59:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:01,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:01,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107431451] [2023-12-02 17:59:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:01,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:01,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:01,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:59:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:02,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:59:02,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:02,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:02,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419902798] [2023-12-02 17:59:02,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107431451] [2023-12-02 17:59:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107431451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:02,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:02,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:02,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685283270] [2023-12-02 17:59:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:02,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:02,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:02,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:02,035 INFO L87 Difference]: Start difference. First operand 191 states and 237 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:02,166 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2023-12-02 17:59:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:59:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-02 17:59:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:02,168 INFO L225 Difference]: With dead ends: 251 [2023-12-02 17:59:02,168 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 17:59:02,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:02,169 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 189 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:02,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 235 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:59:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 17:59:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 191. [2023-12-02 17:59:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6) internal successors, (224), 183 states have internal predecessors, (224), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 234 transitions. [2023-12-02 17:59:02,179 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 234 transitions. Word has length 21 [2023-12-02 17:59:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 234 transitions. [2023-12-02 17:59:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 234 transitions. [2023-12-02 17:59:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 17:59:02,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:02,180 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:02,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:02,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 17:59:02,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:02,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1486233618, now seen corresponding path program 1 times [2023-12-02 17:59:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:02,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452298223] [2023-12-02 17:59:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:02,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:02,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443557015] [2023-12-02 17:59:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:02,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:02,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:02,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:02,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:59:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:02,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:59:02,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:02,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:02,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452298223] [2023-12-02 17:59:02,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443557015] [2023-12-02 17:59:02,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443557015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:59:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950672483] [2023-12-02 17:59:02,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:02,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:59:02,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:59:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:02,461 INFO L87 Difference]: Start difference. First operand 191 states and 234 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:02,608 INFO L93 Difference]: Finished difference Result 260 states and 299 transitions. [2023-12-02 17:59:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:59:02,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-02 17:59:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:02,610 INFO L225 Difference]: With dead ends: 260 [2023-12-02 17:59:02,610 INFO L226 Difference]: Without dead ends: 258 [2023-12-02 17:59:02,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:59:02,611 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 156 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:02,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 292 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:59:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-02 17:59:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 194. [2023-12-02 17:59:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 143 states have (on average 1.5804195804195804) internal successors, (226), 186 states have internal predecessors, (226), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 236 transitions. [2023-12-02 17:59:02,619 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 236 transitions. Word has length 22 [2023-12-02 17:59:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:02,620 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 236 transitions. [2023-12-02 17:59:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 236 transitions. [2023-12-02 17:59:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 17:59:02,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:02,621 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:02,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:02,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:02,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1171398026, now seen corresponding path program 1 times [2023-12-02 17:59:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:02,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813275732] [2023-12-02 17:59:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:02,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:02,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:02,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229683730] [2023-12-02 17:59:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:02,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:02,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:02,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:59:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:02,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:59:02,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:02,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:02,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813275732] [2023-12-02 17:59:02,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229683730] [2023-12-02 17:59:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229683730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:02,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:59:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863894337] [2023-12-02 17:59:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:02,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:59:02,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:59:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:02,944 INFO L87 Difference]: Start difference. First operand 194 states and 236 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:03,155 INFO L93 Difference]: Finished difference Result 262 states and 297 transitions. [2023-12-02 17:59:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:59:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-12-02 17:59:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:03,158 INFO L225 Difference]: With dead ends: 262 [2023-12-02 17:59:03,158 INFO L226 Difference]: Without dead ends: 260 [2023-12-02 17:59:03,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:59:03,159 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 238 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:03,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 260 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:59:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-02 17:59:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 195. [2023-12-02 17:59:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 144 states have (on average 1.5694444444444444) internal successors, (226), 187 states have internal predecessors, (226), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2023-12-02 17:59:03,167 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 23 [2023-12-02 17:59:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:03,167 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2023-12-02 17:59:03,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:59:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2023-12-02 17:59:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:59:03,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:03,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:03,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:59:03,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 17:59:03,371 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:03,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1953600364, now seen corresponding path program 1 times [2023-12-02 17:59:03,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:03,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45201866] [2023-12-02 17:59:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:03,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74701771] [2023-12-02 17:59:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:03,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:03,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:59:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:03,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:59:03,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:03,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:03,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45201866] [2023-12-02 17:59:03,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74701771] [2023-12-02 17:59:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74701771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:59:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [57532234] [2023-12-02 17:59:03,705 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 17:59:03,705 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:03,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:03,711 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:03,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:04,015 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 17:59:04,055 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [57532234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:04,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:59:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 6] total 19 [2023-12-02 17:59:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498822222] [2023-12-02 17:59:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:59:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:59:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-02 17:59:04,884 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand has 11 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:59:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:05,402 INFO L93 Difference]: Finished difference Result 236 states and 271 transitions. [2023-12-02 17:59:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:59:05,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-12-02 17:59:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:05,404 INFO L225 Difference]: With dead ends: 236 [2023-12-02 17:59:05,405 INFO L226 Difference]: Without dead ends: 196 [2023-12-02 17:59:05,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-02 17:59:05,406 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 248 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:05,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 124 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:59:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-02 17:59:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-02 17:59:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 145 states have (on average 1.5241379310344827) internal successors, (221), 188 states have internal predecessors, (221), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2023-12-02 17:59:05,419 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 24 [2023-12-02 17:59:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:05,419 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2023-12-02 17:59:05,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:59:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2023-12-02 17:59:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 17:59:05,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:05,421 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:05,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 17:59:05,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:05,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:05,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1475602827, now seen corresponding path program 1 times [2023-12-02 17:59:05,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:05,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563640542] [2023-12-02 17:59:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:05,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:05,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586716751] [2023-12-02 17:59:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:05,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:05,637 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:05,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:59:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:05,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:59:05,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:05,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:05,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563640542] [2023-12-02 17:59:05,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586716751] [2023-12-02 17:59:05,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586716751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:05,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:05,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515780644] [2023-12-02 17:59:05,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:05,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:05,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:05,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:05,730 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:05,772 INFO L93 Difference]: Finished difference Result 196 states and 231 transitions. [2023-12-02 17:59:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:05,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2023-12-02 17:59:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:05,774 INFO L225 Difference]: With dead ends: 196 [2023-12-02 17:59:05,774 INFO L226 Difference]: Without dead ends: 195 [2023-12-02 17:59:05,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:05,775 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:05,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 199 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:59:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-02 17:59:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-12-02 17:59:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 187 states have internal predecessors, (219), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 229 transitions. [2023-12-02 17:59:05,787 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 229 transitions. Word has length 42 [2023-12-02 17:59:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:05,788 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 229 transitions. [2023-12-02 17:59:05,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:05,788 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 229 transitions. [2023-12-02 17:59:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 17:59:05,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:05,789 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:05,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 17:59:05,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:05,990 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:05,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1500952490, now seen corresponding path program 1 times [2023-12-02 17:59:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910389906] [2023-12-02 17:59:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:05,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:05,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:05,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696830768] [2023-12-02 17:59:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:05,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:05,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:05,998 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:06,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:59:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:06,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:59:06,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:06,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:06,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:06,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910389906] [2023-12-02 17:59:06,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:06,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696830768] [2023-12-02 17:59:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696830768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:06,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778882700] [2023-12-02 17:59:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:06,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:06,087 INFO L87 Difference]: Start difference. First operand 195 states and 229 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:06,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:06,132 INFO L93 Difference]: Finished difference Result 206 states and 241 transitions. [2023-12-02 17:59:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:06,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-12-02 17:59:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:06,134 INFO L225 Difference]: With dead ends: 206 [2023-12-02 17:59:06,134 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 17:59:06,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:06,135 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 13 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:06,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 309 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:59:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 17:59:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2023-12-02 17:59:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 195 states have internal predecessors, (229), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 239 transitions. [2023-12-02 17:59:06,145 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 239 transitions. Word has length 43 [2023-12-02 17:59:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:06,145 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 239 transitions. [2023-12-02 17:59:06,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 239 transitions. [2023-12-02 17:59:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 17:59:06,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:06,147 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:06,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:59:06,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:06,350 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:06,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -671799420, now seen corresponding path program 1 times [2023-12-02 17:59:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:06,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880807612] [2023-12-02 17:59:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:06,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133201916] [2023-12-02 17:59:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:06,360 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:06,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:59:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:06,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:59:06,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:06,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:06,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880807612] [2023-12-02 17:59:06,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133201916] [2023-12-02 17:59:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133201916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:06,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:06,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:06,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332984464] [2023-12-02 17:59:06,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:06,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:06,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:06,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:06,461 INFO L87 Difference]: Start difference. First operand 203 states and 239 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:06,505 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2023-12-02 17:59:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:06,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-12-02 17:59:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:06,507 INFO L225 Difference]: With dead ends: 203 [2023-12-02 17:59:06,507 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 17:59:06,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:06,508 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 75 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:06,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 195 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:59:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 17:59:06,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-12-02 17:59:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 153 states have (on average 1.477124183006536) internal successors, (226), 193 states have internal predecessors, (226), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 236 transitions. [2023-12-02 17:59:06,521 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 236 transitions. Word has length 43 [2023-12-02 17:59:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:06,522 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 236 transitions. [2023-12-02 17:59:06,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 236 transitions. [2023-12-02 17:59:06,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 17:59:06,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:06,523 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:06,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 17:59:06,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 17:59:06,729 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:06,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 649054583, now seen corresponding path program 1 times [2023-12-02 17:59:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763094846] [2023-12-02 17:59:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:06,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848699324] [2023-12-02 17:59:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:06,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:06,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:06,738 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:06,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:59:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:06,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:59:06,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:06,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:06,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:06,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763094846] [2023-12-02 17:59:06,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:06,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848699324] [2023-12-02 17:59:06,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848699324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:06,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:06,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:59:06,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899141281] [2023-12-02 17:59:06,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:06,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:59:06,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:06,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:59:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:59:06,828 INFO L87 Difference]: Start difference. First operand 201 states and 236 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:06,883 INFO L93 Difference]: Finished difference Result 243 states and 250 transitions. [2023-12-02 17:59:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:59:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-12-02 17:59:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:06,886 INFO L225 Difference]: With dead ends: 243 [2023-12-02 17:59:06,886 INFO L226 Difference]: Without dead ends: 242 [2023-12-02 17:59:06,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:59:06,887 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 63 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:06,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 373 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:59:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-02 17:59:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 209. [2023-12-02 17:59:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 161 states have (on average 1.4596273291925466) internal successors, (235), 201 states have internal predecessors, (235), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2023-12-02 17:59:06,899 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 44 [2023-12-02 17:59:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:06,900 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2023-12-02 17:59:06,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2023-12-02 17:59:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 17:59:06,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:06,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:06,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:59:07,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 17:59:07,110 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:07,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash 693670232, now seen corresponding path program 1 times [2023-12-02 17:59:07,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:07,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040562258] [2023-12-02 17:59:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:07,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:07,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:07,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322357899] [2023-12-02 17:59:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:07,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:07,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:07,121 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:07,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:59:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:07,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:59:07,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:07,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:07,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040562258] [2023-12-02 17:59:07,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322357899] [2023-12-02 17:59:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322357899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:07,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:07,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:59:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288895858] [2023-12-02 17:59:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:07,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:59:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:07,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:59:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:59:07,361 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:07,564 INFO L93 Difference]: Finished difference Result 209 states and 245 transitions. [2023-12-02 17:59:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:59:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-12-02 17:59:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:07,566 INFO L225 Difference]: With dead ends: 209 [2023-12-02 17:59:07,566 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 17:59:07,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:59:07,567 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 177 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:07,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 215 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:59:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 17:59:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-02 17:59:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 161 states have (on average 1.434782608695652) internal successors, (231), 199 states have internal predecessors, (231), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:59:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 241 transitions. [2023-12-02 17:59:07,579 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 241 transitions. Word has length 45 [2023-12-02 17:59:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:07,579 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 241 transitions. [2023-12-02 17:59:07,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:59:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 241 transitions. [2023-12-02 17:59:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 17:59:07,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:07,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:07,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 17:59:07,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:59:07,780 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:07,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash 28940768, now seen corresponding path program 1 times [2023-12-02 17:59:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:07,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137375709] [2023-12-02 17:59:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:07,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:07,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430623247] [2023-12-02 17:59:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:07,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:07,790 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:07,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:59:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:07,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:59:07,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:08,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:08,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137375709] [2023-12-02 17:59:08,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:08,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430623247] [2023-12-02 17:59:08,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430623247] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:59:08,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:59:08,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-12-02 17:59:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614561599] [2023-12-02 17:59:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:08,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:59:08,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:08,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:59:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:59:08,234 INFO L87 Difference]: Start difference. First operand 207 states and 241 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:08,515 INFO L93 Difference]: Finished difference Result 304 states and 341 transitions. [2023-12-02 17:59:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:59:08,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2023-12-02 17:59:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:08,519 INFO L225 Difference]: With dead ends: 304 [2023-12-02 17:59:08,519 INFO L226 Difference]: Without dead ends: 302 [2023-12-02 17:59:08,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:59:08,520 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 392 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:08,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 223 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:59:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-02 17:59:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 248. [2023-12-02 17:59:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 201 states have (on average 1.4577114427860696) internal successors, (293), 239 states have internal predecessors, (293), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:59:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 305 transitions. [2023-12-02 17:59:08,531 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 305 transitions. Word has length 46 [2023-12-02 17:59:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:08,532 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 305 transitions. [2023-12-02 17:59:08,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 305 transitions. [2023-12-02 17:59:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 17:59:08,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:08,533 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:08,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 17:59:08,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:08,734 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:08,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1113949348, now seen corresponding path program 1 times [2023-12-02 17:59:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:08,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165957220] [2023-12-02 17:59:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:08,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:08,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:08,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927147693] [2023-12-02 17:59:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:08,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:08,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:08,744 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:08,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:59:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:08,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:59:08,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:09,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:09,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165957220] [2023-12-02 17:59:09,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927147693] [2023-12-02 17:59:09,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927147693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:59:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758693132] [2023-12-02 17:59:09,186 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 17:59:09,186 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:09,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:09,187 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:09,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:13,291 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 95 for LOIs [2023-12-02 17:59:13,331 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 17:59:13,360 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [758693132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:15,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:59:15,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 24 [2023-12-02 17:59:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482835025] [2023-12-02 17:59:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:15,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 17:59:15,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:15,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 17:59:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2023-12-02 17:59:15,878 INFO L87 Difference]: Start difference. First operand 248 states and 305 transitions. Second operand has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:17,327 INFO L93 Difference]: Finished difference Result 277 states and 308 transitions. [2023-12-02 17:59:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 17:59:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-02 17:59:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:17,329 INFO L225 Difference]: With dead ends: 277 [2023-12-02 17:59:17,329 INFO L226 Difference]: Without dead ends: 228 [2023-12-02 17:59:17,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 22 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 17:59:17,330 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 397 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:17,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 117 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 17:59:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-02 17:59:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 221. [2023-12-02 17:59:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 212 states have internal predecessors, (240), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:59:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 252 transitions. [2023-12-02 17:59:17,346 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 252 transitions. Word has length 49 [2023-12-02 17:59:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:17,347 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 252 transitions. [2023-12-02 17:59:17,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 252 transitions. [2023-12-02 17:59:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 17:59:17,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:17,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:17,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:17,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:17,548 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:17,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1602318510, now seen corresponding path program 1 times [2023-12-02 17:59:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:17,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385811956] [2023-12-02 17:59:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:17,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:17,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897886733] [2023-12-02 17:59:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:17,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:17,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 17:59:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:17,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:59:17,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:17,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:18,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385811956] [2023-12-02 17:59:18,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897886733] [2023-12-02 17:59:18,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897886733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:59:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1518719661] [2023-12-02 17:59:18,203 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 17:59:18,203 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:18,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:18,204 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:18,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:21,530 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 17:59:21,577 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 17:59:21,603 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:24,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1518719661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:24,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:59:24,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6] total 30 [2023-12-02 17:59:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993660492] [2023-12-02 17:59:24,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 17:59:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 17:59:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-02 17:59:24,860 INFO L87 Difference]: Start difference. First operand 221 states and 252 transitions. Second operand has 22 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:28,071 INFO L93 Difference]: Finished difference Result 330 states and 363 transitions. [2023-12-02 17:59:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 17:59:28,071 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-12-02 17:59:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:28,073 INFO L225 Difference]: With dead ends: 330 [2023-12-02 17:59:28,073 INFO L226 Difference]: Without dead ends: 302 [2023-12-02 17:59:28,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 23 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=499, Invalid=1663, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 17:59:28,075 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 549 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:28,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 144 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 17:59:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-02 17:59:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 275. [2023-12-02 17:59:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 227 states have (on average 1.3392070484581498) internal successors, (304), 265 states have internal predecessors, (304), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:59:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 318 transitions. [2023-12-02 17:59:28,087 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 318 transitions. Word has length 50 [2023-12-02 17:59:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:28,087 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 318 transitions. [2023-12-02 17:59:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 318 transitions. [2023-12-02 17:59:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 17:59:28,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:28,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:28,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:28,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:28,288 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:28,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:28,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2065169296, now seen corresponding path program 1 times [2023-12-02 17:59:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:28,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684842260] [2023-12-02 17:59:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:28,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:28,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:28,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307304254] [2023-12-02 17:59:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:28,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:28,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:28,295 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:28,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 17:59:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:28,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:59:28,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:28,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:28,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684842260] [2023-12-02 17:59:28,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307304254] [2023-12-02 17:59:28,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307304254] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:59:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1842889286] [2023-12-02 17:59:28,721 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 17:59:28,721 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:28,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:28,722 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:28,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:32,127 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 17:59:32,167 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 17:59:32,193 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:35,578 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11666#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 3) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 4)) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 9223372036854775808 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:59:35,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:59:35,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:59:35,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 17:59:35,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469513262] [2023-12-02 17:59:35,578 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:59:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:59:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:59:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 17:59:35,580 INFO L87 Difference]: Start difference. First operand 275 states and 318 transitions. Second operand has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:35,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:35,823 INFO L93 Difference]: Finished difference Result 477 states and 560 transitions. [2023-12-02 17:59:35,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:59:35,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-12-02 17:59:35,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:35,827 INFO L225 Difference]: With dead ends: 477 [2023-12-02 17:59:35,827 INFO L226 Difference]: Without dead ends: 475 [2023-12-02 17:59:35,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 68 SyntacticMatches, 23 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 17:59:35,828 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 241 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:35,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 284 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:59:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-02 17:59:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 405. [2023-12-02 17:59:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 354 states have (on average 1.3898305084745763) internal successors, (492), 392 states have internal predecessors, (492), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:59:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 512 transitions. [2023-12-02 17:59:35,854 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 512 transitions. Word has length 52 [2023-12-02 17:59:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:35,855 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 512 transitions. [2023-12-02 17:59:35,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:59:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 512 transitions. [2023-12-02 17:59:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 17:59:35,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:35,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:35,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 17:59:36,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:36,062 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:36,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 260928500, now seen corresponding path program 1 times [2023-12-02 17:59:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:36,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50437689] [2023-12-02 17:59:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:36,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:36,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:36,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084910311] [2023-12-02 17:59:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:36,069 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:36,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:59:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:36,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:59:36,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:36,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:59:37,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50437689] [2023-12-02 17:59:37,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084910311] [2023-12-02 17:59:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084910311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:59:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1835939944] [2023-12-02 17:59:37,340 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 17:59:37,340 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:37,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:37,340 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:37,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:40,600 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 17:59:40,638 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 17:59:40,664 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:44,347 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12955#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 3) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 4)) (<= |ULTIMATE.start_main_~Y~0#1| 2) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:59:44,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:59:44,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:59:44,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 17:59:44,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021669317] [2023-12-02 17:59:44,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:59:44,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:59:44,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:44,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:59:44,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 17:59:44,350 INFO L87 Difference]: Start difference. First operand 405 states and 512 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 17:59:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:56,379 INFO L93 Difference]: Finished difference Result 682 states and 806 transitions. [2023-12-02 17:59:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 17:59:56,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 56 [2023-12-02 17:59:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:56,382 INFO L225 Difference]: With dead ends: 682 [2023-12-02 17:59:56,382 INFO L226 Difference]: Without dead ends: 680 [2023-12-02 17:59:56,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 26 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=302, Invalid=1678, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 17:59:56,384 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1068 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:56,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 372 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-02 17:59:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-12-02 17:59:56,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 515. [2023-12-02 17:59:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 461 states have (on average 1.3926247288503253) internal successors, (642), 499 states have internal predecessors, (642), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:59:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 668 transitions. [2023-12-02 17:59:56,417 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 668 transitions. Word has length 56 [2023-12-02 17:59:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 668 transitions. [2023-12-02 17:59:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 17:59:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 668 transitions. [2023-12-02 17:59:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 17:59:56,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:56,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:56,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:56,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 17:59:56,620 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:56,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2053313318, now seen corresponding path program 1 times [2023-12-02 17:59:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:56,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806612214] [2023-12-02 17:59:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:56,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:56,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:56,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688116193] [2023-12-02 17:59:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:56,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:56,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:56,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:56,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:59:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:56,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 17:59:56,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:59:57,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:57,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806612214] [2023-12-02 17:59:57,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688116193] [2023-12-02 17:59:57,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688116193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:59:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174397234] [2023-12-02 17:59:57,631 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 17:59:57,632 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:57,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:57,632 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:57,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:00:01,144 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 18:00:01,183 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:00:01,211 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:00:06,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14558#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 3) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~yx~0#1| 6))' at error location [2023-12-02 18:00:06,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:00:06,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:00:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 18:00:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381502277] [2023-12-02 18:00:06,306 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:00:06,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:00:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:00:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:00:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 18:00:06,307 INFO L87 Difference]: Start difference. First operand 515 states and 668 transitions. Second operand has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:00:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:07,396 INFO L93 Difference]: Finished difference Result 529 states and 676 transitions. [2023-12-02 18:00:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:00:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2023-12-02 18:00:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:07,399 INFO L225 Difference]: With dead ends: 529 [2023-12-02 18:00:07,399 INFO L226 Difference]: Without dead ends: 525 [2023-12-02 18:00:07,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 89 SyntacticMatches, 34 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 18:00:07,400 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 235 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:07,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 302 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:00:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-02 18:00:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 516. [2023-12-02 18:00:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 462 states have (on average 1.3852813852813852) internal successors, (640), 500 states have internal predecessors, (640), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 18:00:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 666 transitions. [2023-12-02 18:00:07,435 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 666 transitions. Word has length 65 [2023-12-02 18:00:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:07,435 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 666 transitions. [2023-12-02 18:00:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:00:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 666 transitions. [2023-12-02 18:00:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 18:00:07,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:07,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:07,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 18:00:07,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 18:00:07,637 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:00:07,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash -650754692, now seen corresponding path program 1 times [2023-12-02 18:00:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:00:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551648712] [2023-12-02 18:00:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:00:07,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:00:07,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240502464] [2023-12-02 18:00:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:00:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:00:07,646 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:00:07,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 18:00:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:07,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:00:07,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:00:07,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:00:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:00:07,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:00:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551648712] [2023-12-02 18:00:07,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:00:07,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240502464] [2023-12-02 18:00:07,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240502464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:00:07,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1361057288] [2023-12-02 18:00:07,973 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 18:00:07,973 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:00:07,973 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:00:07,973 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:00:07,973 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:00:11,306 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 18:00:11,345 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:00:11,370 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:00:17,470 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16124#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= 0 |ULTIMATE.start_main_~xy~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|))' at error location [2023-12-02 18:00:17,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:00:17,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:00:17,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 18:00:17,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604998757] [2023-12-02 18:00:17,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:00:17,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:00:17,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:00:17,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:00:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 18:00:17,472 INFO L87 Difference]: Start difference. First operand 516 states and 666 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:00:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:18,642 INFO L93 Difference]: Finished difference Result 679 states and 839 transitions. [2023-12-02 18:00:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:00:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 72 [2023-12-02 18:00:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:18,645 INFO L225 Difference]: With dead ends: 679 [2023-12-02 18:00:18,645 INFO L226 Difference]: Without dead ends: 676 [2023-12-02 18:00:18,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 147 SyntacticMatches, 35 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 18:00:18,646 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 212 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:18,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 918 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:00:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-02 18:00:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 544. [2023-12-02 18:00:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 489 states have (on average 1.3905930470347647) internal successors, (680), 527 states have internal predecessors, (680), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 18:00:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 708 transitions. [2023-12-02 18:00:18,680 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 708 transitions. Word has length 72 [2023-12-02 18:00:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:18,680 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 708 transitions. [2023-12-02 18:00:18,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:00:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 708 transitions. [2023-12-02 18:00:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 18:00:18,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:18,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:18,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 18:00:18,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 18:00:18,886 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:00:18,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1420632762, now seen corresponding path program 1 times [2023-12-02 18:00:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:00:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935835627] [2023-12-02 18:00:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:00:18,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:00:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093514396] [2023-12-02 18:00:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:18,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:00:18,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:00:18,895 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:00:18,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 18:00:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:18,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:00:18,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:00:19,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:00:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:00:19,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:00:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935835627] [2023-12-02 18:00:19,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:00:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093514396] [2023-12-02 18:00:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093514396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:00:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1149154492] [2023-12-02 18:00:19,076 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:00:19,076 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:00:19,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:00:19,076 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:00:19,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:00:24,379 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:00:24,415 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:00:24,442 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:00:31,691 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17915#(and (<= 9223372036854775807 |ULTIMATE.start_main_#t~post7#1|) (= |ULTIMATE.start_main_#t~post7#1| |ULTIMATE.start_main_~x~0#1|) (or (and (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|))) (and (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775805) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))) (or (and (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= (* 2 |ULTIMATE.start_main_~Y~0#1|) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~X~0#1| (+ |ULTIMATE.start_main_~Y~0#1| 4611686018427387904)))))' at error location [2023-12-02 18:00:31,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:00:31,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:00:31,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 18:00:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859886244] [2023-12-02 18:00:31,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:00:31,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:00:31,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:00:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:00:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=2503, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 18:00:31,694 INFO L87 Difference]: Start difference. First operand 544 states and 708 transitions. Second operand has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:00:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:32,017 INFO L93 Difference]: Finished difference Result 1120 states and 1403 transitions. [2023-12-02 18:00:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:00:32,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 78 [2023-12-02 18:00:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:32,023 INFO L225 Difference]: With dead ends: 1120 [2023-12-02 18:00:32,023 INFO L226 Difference]: Without dead ends: 1119 [2023-12-02 18:00:32,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=287, Invalid=2905, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:00:32,025 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 240 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:32,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 784 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:00:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2023-12-02 18:00:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 909. [2023-12-02 18:00:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 845 states have (on average 1.362130177514793) internal successors, (1151), 883 states have internal predecessors, (1151), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:00:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1197 transitions. [2023-12-02 18:00:32,068 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1197 transitions. Word has length 78 [2023-12-02 18:00:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:32,068 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1197 transitions. [2023-12-02 18:00:32,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:00:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1197 transitions. [2023-12-02 18:00:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 18:00:32,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:32,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:32,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 18:00:32,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 18:00:32,270 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:00:32,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 967283778, now seen corresponding path program 1 times [2023-12-02 18:00:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:00:32,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747505879] [2023-12-02 18:00:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:00:32,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:00:32,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799917480] [2023-12-02 18:00:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:32,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:00:32,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:00:32,278 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:00:32,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 18:00:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:32,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:00:32,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:00:32,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:00:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:00:32,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:00:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747505879] [2023-12-02 18:00:32,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:00:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799917480] [2023-12-02 18:00:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799917480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:00:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557981146] [2023-12-02 18:00:32,601 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2023-12-02 18:00:32,601 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:00:32,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:00:32,602 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:00:32,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:00:36,042 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 50 for LOIs [2023-12-02 18:00:36,053 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:00:36,078 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:00:43,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20563#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:00:43,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:00:43,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:00:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 18:00:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642405756] [2023-12-02 18:00:43,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:00:43,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:00:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:00:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:00:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:00:43,767 INFO L87 Difference]: Start difference. First operand 909 states and 1197 transitions. Second operand has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:00:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:45,254 INFO L93 Difference]: Finished difference Result 988 states and 1258 transitions. [2023-12-02 18:00:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 18:00:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 78 [2023-12-02 18:00:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:45,258 INFO L225 Difference]: With dead ends: 988 [2023-12-02 18:00:45,258 INFO L226 Difference]: Without dead ends: 987 [2023-12-02 18:00:45,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 158 SyntacticMatches, 38 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 18:00:45,260 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 531 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:45,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 506 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 18:00:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-12-02 18:00:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 921. [2023-12-02 18:00:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 857 states have (on average 1.3605600933488915) internal successors, (1166), 895 states have internal predecessors, (1166), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:00:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1212 transitions. [2023-12-02 18:00:45,325 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1212 transitions. Word has length 78 [2023-12-02 18:00:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:45,326 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1212 transitions. [2023-12-02 18:00:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:00:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1212 transitions. [2023-12-02 18:00:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 18:00:45,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:45,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:45,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 18:00:45,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 18:00:45,528 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:00:45,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1474315424, now seen corresponding path program 1 times [2023-12-02 18:00:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:00:45,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031071773] [2023-12-02 18:00:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:00:45,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:00:45,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128915194] [2023-12-02 18:00:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:45,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:00:45,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:00:45,536 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:00:45,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 18:00:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:45,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:00:45,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:00:46,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:00:46,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:00:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031071773] [2023-12-02 18:00:46,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:00:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128915194] [2023-12-02 18:00:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128915194] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:00:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [46101936] [2023-12-02 18:00:46,305 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:00:46,305 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:00:46,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:00:46,305 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:00:46,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:00:51,949 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:00:51,986 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:00:52,011 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:01:02,430 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22913#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:01:02,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:01:02,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:01:02,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 18:01:02,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814630898] [2023-12-02 18:01:02,431 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:01:02,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:01:02,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:02,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:01:02,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=3131, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 18:01:02,433 INFO L87 Difference]: Start difference. First operand 921 states and 1212 transitions. Second operand has 12 states, 10 states have (on average 7.2) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:01:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:03,344 INFO L93 Difference]: Finished difference Result 974 states and 1240 transitions. [2023-12-02 18:01:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:01:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.2) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 81 [2023-12-02 18:01:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:03,349 INFO L225 Difference]: With dead ends: 974 [2023-12-02 18:01:03,349 INFO L226 Difference]: Without dead ends: 972 [2023-12-02 18:01:03,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=348, Invalid=3812, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 18:01:03,351 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 321 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:03,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 621 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:01:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2023-12-02 18:01:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 921. [2023-12-02 18:01:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 857 states have (on average 1.3582263710618436) internal successors, (1164), 895 states have internal predecessors, (1164), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:01:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1210 transitions. [2023-12-02 18:01:03,410 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1210 transitions. Word has length 81 [2023-12-02 18:01:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1210 transitions. [2023-12-02 18:01:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.2) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:01:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1210 transitions. [2023-12-02 18:01:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:01:03,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:03,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:03,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 18:01:03,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 18:01:03,612 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:03,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:03,612 INFO L85 PathProgramCache]: Analyzing trace with hash 530688702, now seen corresponding path program 1 times [2023-12-02 18:01:03,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:03,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555241779] [2023-12-02 18:01:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:03,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:03,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:03,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812436912] [2023-12-02 18:01:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:03,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:03,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:03,621 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:03,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 18:01:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:03,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:01:03,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:01:03,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:01:03,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555241779] [2023-12-02 18:01:03,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812436912] [2023-12-02 18:01:03,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812436912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652524970] [2023-12-02 18:01:03,902 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:01:03,902 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:03,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:03,902 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:03,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:01:08,805 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:01:08,842 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:01:08,869 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:01:18,581 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25451#(and (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:01:18,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:01:18,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-02 18:01:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711105368] [2023-12-02 18:01:18,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:01:18,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:01:18,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:01:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 18:01:18,584 INFO L87 Difference]: Start difference. First operand 921 states and 1210 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:01:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:18,883 INFO L93 Difference]: Finished difference Result 1108 states and 1451 transitions. [2023-12-02 18:01:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:01:18,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 82 [2023-12-02 18:01:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:18,886 INFO L225 Difference]: With dead ends: 1108 [2023-12-02 18:01:18,886 INFO L226 Difference]: Without dead ends: 788 [2023-12-02 18:01:18,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=311, Invalid=3111, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 18:01:18,889 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 356 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:18,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 247 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:01:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-02 18:01:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2023-12-02 18:01:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 727 states have (on average 1.3411279229711142) internal successors, (975), 765 states have internal predecessors, (975), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:01:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1015 transitions. [2023-12-02 18:01:18,925 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1015 transitions. Word has length 82 [2023-12-02 18:01:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:18,925 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1015 transitions. [2023-12-02 18:01:18,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:01:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1015 transitions. [2023-12-02 18:01:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:01:18,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:18,927 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:18,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 18:01:19,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 18:01:19,127 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:19,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1540862054, now seen corresponding path program 2 times [2023-12-02 18:01:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083052059] [2023-12-02 18:01:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:19,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:19,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394007250] [2023-12-02 18:01:19,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:01:19,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:19,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:19,135 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:19,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 18:01:19,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:01:19,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:01:19,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:01:19,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:01:19,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:19,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083052059] [2023-12-02 18:01:19,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394007250] [2023-12-02 18:01:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394007250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:19,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:01:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401157718] [2023-12-02 18:01:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:01:19,228 INFO L87 Difference]: Start difference. First operand 788 states and 1015 transitions. Second operand has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 18:01:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:19,353 INFO L93 Difference]: Finished difference Result 839 states and 1077 transitions. [2023-12-02 18:01:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:19,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2023-12-02 18:01:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:19,357 INFO L225 Difference]: With dead ends: 839 [2023-12-02 18:01:19,357 INFO L226 Difference]: Without dead ends: 838 [2023-12-02 18:01:19,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:01:19,358 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 68 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:19,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 78 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-12-02 18:01:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 836. [2023-12-02 18:01:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 775 states have (on average 1.3264516129032258) internal successors, (1028), 813 states have internal predecessors, (1028), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:01:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1068 transitions. [2023-12-02 18:01:19,396 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1068 transitions. Word has length 82 [2023-12-02 18:01:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:19,397 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1068 transitions. [2023-12-02 18:01:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 18:01:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1068 transitions. [2023-12-02 18:01:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 18:01:19,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:19,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:19,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 18:01:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:19,598 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:19,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash 995285148, now seen corresponding path program 1 times [2023-12-02 18:01:19,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:19,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204390616] [2023-12-02 18:01:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:19,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:19,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993852465] [2023-12-02 18:01:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:19,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:19,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:19,607 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:19,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 18:01:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:19,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 18:01:19,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:01:20,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:20,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204390616] [2023-12-02 18:01:20,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993852465] [2023-12-02 18:01:20,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993852465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:01:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [496015615] [2023-12-02 18:01:20,258 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:01:20,258 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:20,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:20,258 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:20,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:01:25,115 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:01:25,151 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:01:25,176 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:01:36,849 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29823#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:01:36,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:01:36,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:01:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 18:01:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969239904] [2023-12-02 18:01:36,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:01:36,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 18:01:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 18:01:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=3350, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 18:01:36,851 INFO L87 Difference]: Start difference. First operand 836 states and 1068 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:01:37,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:37,772 INFO L93 Difference]: Finished difference Result 1056 states and 1312 transitions. [2023-12-02 18:01:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:01:37,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 84 [2023-12-02 18:01:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:37,777 INFO L225 Difference]: With dead ends: 1056 [2023-12-02 18:01:37,777 INFO L226 Difference]: Without dead ends: 1052 [2023-12-02 18:01:37,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=449, Invalid=4663, Unknown=0, NotChecked=0, Total=5112 [2023-12-02 18:01:37,779 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 652 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:37,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 455 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:01:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2023-12-02 18:01:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 951. [2023-12-02 18:01:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 887 states have (on average 1.3393461104847801) internal successors, (1188), 925 states have internal predecessors, (1188), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:01:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1234 transitions. [2023-12-02 18:01:37,830 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1234 transitions. Word has length 84 [2023-12-02 18:01:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:37,830 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1234 transitions. [2023-12-02 18:01:37,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:01:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1234 transitions. [2023-12-02 18:01:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 18:01:37,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:37,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:37,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 18:01:38,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 18:01:38,032 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:38,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 789068580, now seen corresponding path program 1 times [2023-12-02 18:01:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471663051] [2023-12-02 18:01:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:38,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:38,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144650142] [2023-12-02 18:01:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:38,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:38,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:38,039 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:38,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 18:01:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:38,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 18:01:38,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:01:38,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:38,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:38,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471663051] [2023-12-02 18:01:38,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144650142] [2023-12-02 18:01:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144650142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:01:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1448942776] [2023-12-02 18:01:38,842 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:01:38,842 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:38,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:38,843 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:38,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:01:43,681 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:01:43,718 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:01:43,743 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:01:53,659 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32320#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 4611686018427387904 |ULTIMATE.start_main_~yx~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:01:53,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:01:53,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:01:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 18:01:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990873693] [2023-12-02 18:01:53,659 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:01:53,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 18:01:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 18:01:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=3356, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 18:01:53,661 INFO L87 Difference]: Start difference. First operand 951 states and 1234 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:01:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:54,512 INFO L93 Difference]: Finished difference Result 995 states and 1259 transitions. [2023-12-02 18:01:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:01:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 85 [2023-12-02 18:01:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:54,516 INFO L225 Difference]: With dead ends: 995 [2023-12-02 18:01:54,516 INFO L226 Difference]: Without dead ends: 993 [2023-12-02 18:01:54,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=377, Invalid=4315, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 18:01:54,518 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 367 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:54,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 508 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:01:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2023-12-02 18:01:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 951. [2023-12-02 18:01:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 887 states have (on average 1.3370913190529876) internal successors, (1186), 925 states have internal predecessors, (1186), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:01:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1232 transitions. [2023-12-02 18:01:54,560 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1232 transitions. Word has length 85 [2023-12-02 18:01:54,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:54,560 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1232 transitions. [2023-12-02 18:01:54,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:01:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1232 transitions. [2023-12-02 18:01:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 18:01:54,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:54,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:54,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 18:01:54,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 18:01:54,762 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:54,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:54,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1308677730, now seen corresponding path program 1 times [2023-12-02 18:01:54,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:54,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772978644] [2023-12-02 18:01:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:54,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:54,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:54,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706016123] [2023-12-02 18:01:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:54,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:54,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:54,769 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:54,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 18:01:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:54,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:54,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:01:55,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:01:55,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772978644] [2023-12-02 18:01:55,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706016123] [2023-12-02 18:01:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706016123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2017611412] [2023-12-02 18:01:55,070 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:01:55,070 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:55,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:55,070 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:55,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:01:59,924 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:01:59,960 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:01:59,985 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:02:08,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34946#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387905) 0) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:02:08,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:02:08,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:02:08,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-02 18:02:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260711358] [2023-12-02 18:02:08,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:08,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:02:08,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:02:08,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:02:08,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 18:02:08,333 INFO L87 Difference]: Start difference. First operand 951 states and 1232 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 18:02:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:08,678 INFO L93 Difference]: Finished difference Result 981 states and 1275 transitions. [2023-12-02 18:02:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:02:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2023-12-02 18:02:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:08,683 INFO L225 Difference]: With dead ends: 981 [2023-12-02 18:02:08,683 INFO L226 Difference]: Without dead ends: 980 [2023-12-02 18:02:08,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=312, Invalid=2444, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 18:02:08,684 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 222 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:08,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 140 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:02:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-12-02 18:02:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 975. [2023-12-02 18:02:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 911 states have (on average 1.3369923161361141) internal successors, (1218), 949 states have internal predecessors, (1218), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:02:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1264 transitions. [2023-12-02 18:02:08,737 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1264 transitions. Word has length 86 [2023-12-02 18:02:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:08,737 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1264 transitions. [2023-12-02 18:02:08,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 18:02:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1264 transitions. [2023-12-02 18:02:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 18:02:08,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:08,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:02:08,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-02 18:02:08,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:08,938 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:02:08,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash 786121376, now seen corresponding path program 1 times [2023-12-02 18:02:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:02:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841420499] [2023-12-02 18:02:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:02:08,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:02:08,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535606588] [2023-12-02 18:02:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:08,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:08,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:02:08,947 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:02:08,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 18:02:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:09,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:02:09,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:02:10,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:11,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:02:11,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841420499] [2023-12-02 18:02:11,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:02:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535606588] [2023-12-02 18:02:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535606588] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:02:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607720982] [2023-12-02 18:02:11,649 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:02:11,649 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:02:11,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:02:11,650 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:02:11,650 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:02:18,139 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:02:18,177 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:02:18,203 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:02:48,177 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37399#(and (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:02:48,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:02:48,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:02:48,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 18:02:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545423403] [2023-12-02 18:02:48,178 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:48,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:02:48,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:02:48,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:02:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=3620, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 18:02:48,179 INFO L87 Difference]: Start difference. First operand 975 states and 1264 transitions. Second operand has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:02:50,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:02:52,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:02:54,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:02:56,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:02:59,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:05,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:07,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:09,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:12,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:14,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:16,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:18,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:20,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:23,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:25,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:47,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:50,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:52,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:54,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:56,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:57,927 INFO L93 Difference]: Finished difference Result 1027 states and 1295 transitions. [2023-12-02 18:03:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 18:03:57,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2023-12-02 18:03:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:57,931 INFO L225 Difference]: With dead ends: 1027 [2023-12-02 18:03:57,931 INFO L226 Difference]: Without dead ends: 1024 [2023-12-02 18:03:57,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=474, Invalid=5219, Unknown=7, NotChecked=0, Total=5700 [2023-12-02 18:03:57,932 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 442 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 18 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:57,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 480 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1546 Invalid, 20 Unknown, 0 Unchecked, 49.7s Time] [2023-12-02 18:03:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2023-12-02 18:03:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 975. [2023-12-02 18:03:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 911 states have (on average 1.3271130625686058) internal successors, (1209), 949 states have internal predecessors, (1209), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:03:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1255 transitions. [2023-12-02 18:03:57,982 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1255 transitions. Word has length 88 [2023-12-02 18:03:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:57,982 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1255 transitions. [2023-12-02 18:03:57,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:03:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1255 transitions. [2023-12-02 18:03:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 18:03:57,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:57,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:03:57,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 18:03:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 18:03:58,184 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:03:58,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1400041048, now seen corresponding path program 1 times [2023-12-02 18:03:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:03:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567851249] [2023-12-02 18:03:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:03:58,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:03:58,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135686785] [2023-12-02 18:03:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:03:58,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:03:58,193 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:03:58,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 18:03:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:58,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 18:03:58,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:04:24,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:04:30,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:30,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567851249] [2023-12-02 18:04:30,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:04:30,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135686785] [2023-12-02 18:04:30,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135686785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:30,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881068990] [2023-12-02 18:04:30,464 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:04:30,464 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:04:30,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:04:30,464 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:04:30,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:04:35,379 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:04:35,417 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:04:35,442 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:04:59,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40031#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) |ULTIMATE.start_main_~yx~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:04:59,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:04:59,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 18:04:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770092464] [2023-12-02 18:04:59,245 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:04:59,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:04:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:04:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=4204, Unknown=1, NotChecked=0, Total=4556 [2023-12-02 18:04:59,246 INFO L87 Difference]: Start difference. First operand 975 states and 1255 transitions. Second operand has 14 states, 12 states have (on average 6.666666666666667) internal successors, (80), 14 states have internal predecessors, (80), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:05:01,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:04,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:06,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:12,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:16,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:17,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:18,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:20,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:27,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:29,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:31,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:34,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:36,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:40,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:43,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:45,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:48,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:50,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:52,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:56,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:05:58,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:00,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:02,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:04,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:07,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:09,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:11,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:14,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:17,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:18,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:20,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:23,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:29,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:31,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:39,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:42,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:44,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:46,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:47,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:49,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:51,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:54,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:57,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:06:59,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:01,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:04,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:06,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:08,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:10,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:13,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:15,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:17,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:20,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:22,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:24,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:26,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:29,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:31,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:33,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:36,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:38,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:40,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:42,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:44,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:46,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:48,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:50,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:53,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:55,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:57,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:07:59,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:02,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:04,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:06,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:08,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:10,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:13,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:15,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:17,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:19,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:21,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:24,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:26,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:28,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:30,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:32,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:35,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:37,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:39,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:41,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:44,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:47,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:49,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:51,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:53,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:56,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:08:58,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:09:00,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:09:03,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:09:05,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:09:07,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:09:10,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:09:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:10,282 INFO L93 Difference]: Finished difference Result 1022 states and 1286 transitions. [2023-12-02 18:09:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:09:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.666666666666667) internal successors, (80), 14 states have internal predecessors, (80), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 89 [2023-12-02 18:09:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:10,319 INFO L225 Difference]: With dead ends: 1022 [2023-12-02 18:09:10,320 INFO L226 Difference]: Without dead ends: 1020 [2023-12-02 18:09:10,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 53.2s TimeCoverageRelationStatistics Valid=453, Invalid=5245, Unknown=2, NotChecked=0, Total=5700 [2023-12-02 18:09:10,321 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 259 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 10 mSolverCounterUnsat, 91 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 91 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 231.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:10,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 570 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1592 Invalid, 91 Unknown, 0 Unchecked, 231.1s Time] [2023-12-02 18:09:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-12-02 18:09:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 975. [2023-12-02 18:09:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 911 states have (on average 1.3205268935236005) internal successors, (1203), 949 states have internal predecessors, (1203), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:09:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1249 transitions. [2023-12-02 18:09:10,386 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1249 transitions. Word has length 89 [2023-12-02 18:09:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:10,386 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1249 transitions. [2023-12-02 18:09:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.666666666666667) internal successors, (80), 14 states have internal predecessors, (80), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:09:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1249 transitions. [2023-12-02 18:09:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 18:09:10,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:10,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:10,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 18:09:10,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 18:09:10,588 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:09:10,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1414116368, now seen corresponding path program 1 times [2023-12-02 18:09:10,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:10,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346544311] [2023-12-02 18:09:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:10,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:09:10,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772197917] [2023-12-02 18:09:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:10,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:09:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:09:10,596 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:09:10,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 18:09:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:10,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 18:09:10,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:09:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:09:11,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:09:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:09:12,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:12,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346544311] [2023-12-02 18:09:12,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:09:12,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772197917] [2023-12-02 18:09:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772197917] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:09:12,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595083606] [2023-12-02 18:09:12,890 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 18:09:12,890 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:09:12,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:09:12,890 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:09:12,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:09:16,237 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 50 for LOIs [2023-12-02 18:09:16,248 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:09:16,274 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:09:27,899 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42760#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:09:27,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:09:27,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:09:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-02 18:09:27,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380168674] [2023-12-02 18:09:27,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:09:27,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 18:09:27,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 18:09:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2270, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 18:09:27,901 INFO L87 Difference]: Start difference. First operand 975 states and 1249 transitions. Second operand has 23 states, 22 states have (on average 7.136363636363637) internal successors, (157), 23 states have internal predecessors, (157), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:09:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:36,811 INFO L93 Difference]: Finished difference Result 994 states and 1267 transitions. [2023-12-02 18:09:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 18:09:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.136363636363637) internal successors, (157), 23 states have internal predecessors, (157), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 92 [2023-12-02 18:09:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:36,815 INFO L225 Difference]: With dead ends: 994 [2023-12-02 18:09:36,815 INFO L226 Difference]: Without dead ends: 969 [2023-12-02 18:09:36,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 177 SyntacticMatches, 48 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2783 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=528, Invalid=4164, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 18:09:36,816 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 314 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:36,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 567 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 18:09:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-12-02 18:09:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 967. [2023-12-02 18:09:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 903 states have (on average 1.3233665559246954) internal successors, (1195), 941 states have internal predecessors, (1195), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:09:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1241 transitions. [2023-12-02 18:09:36,869 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1241 transitions. Word has length 92 [2023-12-02 18:09:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:36,870 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1241 transitions. [2023-12-02 18:09:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.136363636363637) internal successors, (157), 23 states have internal predecessors, (157), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:09:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1241 transitions. [2023-12-02 18:09:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 18:09:36,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:36,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:36,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 18:09:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 18:09:37,071 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:09:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -764577938, now seen corresponding path program 1 times [2023-12-02 18:09:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821936716] [2023-12-02 18:09:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:37,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:09:37,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187882377] [2023-12-02 18:09:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:37,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:09:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:09:37,081 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:09:37,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 18:09:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:37,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:09:37,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:09:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:09:37,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:09:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:09:38,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821936716] [2023-12-02 18:09:38,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:09:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187882377] [2023-12-02 18:09:38,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187882377] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:09:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1234452348] [2023-12-02 18:09:38,248 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:09:38,248 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:09:38,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:09:38,249 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:09:38,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:09:43,123 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:09:43,162 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:09:43,188 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:09:54,053 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45466#(and (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= (* 2 |ULTIMATE.start_main_~yx~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:09:54,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:09:54,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:09:54,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-02 18:09:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275302233] [2023-12-02 18:09:54,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:09:54,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 18:09:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:54,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 18:09:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2792, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 18:09:54,056 INFO L87 Difference]: Start difference. First operand 967 states and 1241 transitions. Second operand has 13 states, 11 states have (on average 15.272727272727273) internal successors, (168), 13 states have internal predecessors, (168), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 18:09:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:55,356 INFO L93 Difference]: Finished difference Result 1176 states and 1528 transitions. [2023-12-02 18:09:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:09:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 15.272727272727273) internal successors, (168), 13 states have internal predecessors, (168), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 95 [2023-12-02 18:09:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:55,363 INFO L225 Difference]: With dead ends: 1176 [2023-12-02 18:09:55,363 INFO L226 Difference]: Without dead ends: 1172 [2023-12-02 18:09:55,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=399, Invalid=3761, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 18:09:55,364 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 233 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:55,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 452 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:09:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-12-02 18:09:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 963. [2023-12-02 18:09:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 903 states have (on average 1.2956810631229236) internal successors, (1170), 937 states have internal predecessors, (1170), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 18:09:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1216 transitions. [2023-12-02 18:09:55,430 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1216 transitions. Word has length 95 [2023-12-02 18:09:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1216 transitions. [2023-12-02 18:09:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 15.272727272727273) internal successors, (168), 13 states have internal predecessors, (168), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 18:09:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1216 transitions. [2023-12-02 18:09:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 18:09:55,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:55,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:55,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 18:09:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 18:09:55,631 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:09:55,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2067887784, now seen corresponding path program 1 times [2023-12-02 18:09:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28605344] [2023-12-02 18:09:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:55,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:09:55,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751429903] [2023-12-02 18:09:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:55,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:09:55,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:09:55,639 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:09:55,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 18:09:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:55,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:09:55,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:09:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:09:55,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:09:55,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28605344] [2023-12-02 18:09:55,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:09:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751429903] [2023-12-02 18:09:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751429903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:09:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:09:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:09:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483046740] [2023-12-02 18:09:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:09:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:09:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:09:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:09:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:09:55,793 INFO L87 Difference]: Start difference. First operand 963 states and 1216 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:09:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:56,234 INFO L93 Difference]: Finished difference Result 1216 states and 1552 transitions. [2023-12-02 18:09:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:09:56,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 96 [2023-12-02 18:09:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:56,239 INFO L225 Difference]: With dead ends: 1216 [2023-12-02 18:09:56,239 INFO L226 Difference]: Without dead ends: 1214 [2023-12-02 18:09:56,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:09:56,240 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 75 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:56,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 270 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:09:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-12-02 18:09:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1084. [2023-12-02 18:09:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1018 states have (on average 1.3212180746561886) internal successors, (1345), 1052 states have internal predecessors, (1345), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 18:09:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1403 transitions. [2023-12-02 18:09:56,308 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1403 transitions. Word has length 96 [2023-12-02 18:09:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:56,308 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1403 transitions. [2023-12-02 18:09:56,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:09:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1403 transitions. [2023-12-02 18:09:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 18:09:56,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:56,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:56,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 18:09:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:09:56,510 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:09:56,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash -319988048, now seen corresponding path program 1 times [2023-12-02 18:09:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:09:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050924224] [2023-12-02 18:09:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:09:56,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:09:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183136477] [2023-12-02 18:09:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:56,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:09:56,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:09:56,517 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:09:56,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 18:09:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:56,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:09:56,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:09:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:09:57,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:09:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:09:57,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:09:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050924224] [2023-12-02 18:09:57,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:09:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183136477] [2023-12-02 18:09:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183136477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:09:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [356876261] [2023-12-02 18:09:57,366 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:09:57,366 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:09:57,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:09:57,366 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:09:57,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:10:02,788 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:10:02,827 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:10:02,853 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:10:12,507 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51081#(and (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= (* 2 |ULTIMATE.start_main_~yx~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:10:12,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:10:12,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:10:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 18:10:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512439441] [2023-12-02 18:10:12,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:10:12,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:10:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:10:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:10:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2699, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 18:10:12,508 INFO L87 Difference]: Start difference. First operand 1084 states and 1403 transitions. Second operand has 12 states, 11 states have (on average 15.181818181818182) internal successors, (167), 12 states have internal predecessors, (167), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:10:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:10:14,468 INFO L93 Difference]: Finished difference Result 1758 states and 2161 transitions. [2023-12-02 18:10:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 18:10:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 15.181818181818182) internal successors, (167), 12 states have internal predecessors, (167), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 97 [2023-12-02 18:10:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:10:14,474 INFO L225 Difference]: With dead ends: 1758 [2023-12-02 18:10:14,474 INFO L226 Difference]: Without dead ends: 1467 [2023-12-02 18:10:14,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 234 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=408, Invalid=4422, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 18:10:14,475 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 616 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:10:14,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 591 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 18:10:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-12-02 18:10:14,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1161. [2023-12-02 18:10:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1093 states have (on average 1.3494967978042085) internal successors, (1475), 1127 states have internal predecessors, (1475), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-02 18:10:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1537 transitions. [2023-12-02 18:10:14,548 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1537 transitions. Word has length 97 [2023-12-02 18:10:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:10:14,548 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 1537 transitions. [2023-12-02 18:10:14,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 15.181818181818182) internal successors, (167), 12 states have internal predecessors, (167), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:10:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1537 transitions. [2023-12-02 18:10:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 18:10:14,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:10:14,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:10:14,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 18:10:14,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 18:10:14,749 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:10:14,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:10:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1936902682, now seen corresponding path program 2 times [2023-12-02 18:10:14,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:10:14,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813109306] [2023-12-02 18:10:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:10:14,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:10:14,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:10:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049587336] [2023-12-02 18:10:14,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:10:14,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:10:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:10:14,757 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:10:14,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 18:10:14,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:10:14,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:10:14,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-02 18:10:14,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:10:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:10:18,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:10:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:10:23,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:10:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813109306] [2023-12-02 18:10:23,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:10:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049587336] [2023-12-02 18:10:23,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049587336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:10:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1932170843] [2023-12-02 18:10:23,540 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 18:10:23,540 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:10:23,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:10:23,540 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:10:23,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:10:26,645 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 18:10:26,685 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:10:26,711 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:10:40,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '54841#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~yx~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 3) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~yx~0#1| 6))' at error location [2023-12-02 18:10:40,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:10:40,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:10:40,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2023-12-02 18:10:40,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068178031] [2023-12-02 18:10:40,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:10:40,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 18:10:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:10:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 18:10:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2675, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 18:10:40,786 INFO L87 Difference]: Start difference. First operand 1161 states and 1537 transitions. Second operand has 34 states, 31 states have (on average 5.645161290322581) internal successors, (175), 32 states have internal predecessors, (175), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 18:11:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:11:02,144 INFO L93 Difference]: Finished difference Result 1161 states and 1537 transitions. [2023-12-02 18:11:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-02 18:11:02,144 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 5.645161290322581) internal successors, (175), 32 states have internal predecessors, (175), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 100 [2023-12-02 18:11:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:11:02,150 INFO L225 Difference]: With dead ends: 1161 [2023-12-02 18:11:02,150 INFO L226 Difference]: Without dead ends: 1152 [2023-12-02 18:11:02,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 199 SyntacticMatches, 53 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=1435, Invalid=6937, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 18:11:02,151 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 872 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:11:02,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 112 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-02 18:11:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-12-02 18:11:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 981. [2023-12-02 18:11:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 926 states have (on average 1.2451403887688985) internal successors, (1153), 951 states have internal predecessors, (1153), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:11:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1207 transitions. [2023-12-02 18:11:02,248 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1207 transitions. Word has length 100 [2023-12-02 18:11:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:11:02,248 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1207 transitions. [2023-12-02 18:11:02,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 5.645161290322581) internal successors, (175), 32 states have internal predecessors, (175), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 18:11:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1207 transitions. [2023-12-02 18:11:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 18:11:02,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:11:02,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:11:02,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 18:11:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 18:11:02,450 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:11:02,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:11:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1093614630, now seen corresponding path program 1 times [2023-12-02 18:11:02,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:11:02,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337029272] [2023-12-02 18:11:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:11:02,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:11:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491702491] [2023-12-02 18:11:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:02,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:11:02,459 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:11:02,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 18:11:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:02,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:11:02,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:11:03,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:11:03,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:11:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337029272] [2023-12-02 18:11:03,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:11:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491702491] [2023-12-02 18:11:03,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491702491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:11:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1372482590] [2023-12-02 18:11:03,761 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-12-02 18:11:03,761 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:11:03,761 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:11:03,762 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:11:03,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:11:08,468 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2023-12-02 18:11:08,480 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:11:08,506 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:11:16,364 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '57827#(and (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) 0))' at error location [2023-12-02 18:11:16,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:11:16,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:11:16,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-02 18:11:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142633031] [2023-12-02 18:11:16,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:11:16,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 18:11:16,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:11:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 18:11:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3388, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 18:11:16,367 INFO L87 Difference]: Start difference. First operand 981 states and 1207 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 18:11:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:11:18,197 INFO L93 Difference]: Finished difference Result 995 states and 1212 transitions. [2023-12-02 18:11:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 18:11:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 102 [2023-12-02 18:11:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:11:18,201 INFO L225 Difference]: With dead ends: 995 [2023-12-02 18:11:18,201 INFO L226 Difference]: Without dead ends: 965 [2023-12-02 18:11:18,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=405, Invalid=4997, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 18:11:18,202 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 119 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:11:18,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 786 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 18:11:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-12-02 18:11:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 963. [2023-12-02 18:11:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 908 states have (on average 1.2422907488986785) internal successors, (1128), 933 states have internal predecessors, (1128), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:11:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1182 transitions. [2023-12-02 18:11:18,308 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1182 transitions. Word has length 102 [2023-12-02 18:11:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:11:18,308 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1182 transitions. [2023-12-02 18:11:18,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 18:11:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1182 transitions. [2023-12-02 18:11:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 18:11:18,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:11:18,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:11:18,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 18:11:18,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:18,509 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:11:18,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:11:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -909337821, now seen corresponding path program 1 times [2023-12-02 18:11:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:11:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892598145] [2023-12-02 18:11:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:11:18,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:11:18,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920784271] [2023-12-02 18:11:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:18,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:18,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:11:18,518 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:11:18,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 18:11:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:18,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:11:18,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:11:19,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:11:20,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:11:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892598145] [2023-12-02 18:11:20,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:11:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920784271] [2023-12-02 18:11:20,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920784271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:11:20,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [188498312] [2023-12-02 18:11:20,181 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:11:20,181 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:11:20,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:11:20,181 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:11:20,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:11:25,115 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:11:25,153 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:11:25,179 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:11:35,906 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60626#(and (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= (+ 9223372036854775808 (* 2 |ULTIMATE.start_main_~X~0#1|)) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| (+ 4611686018427387903 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~X~0#1| (+ |ULTIMATE.start_main_~Y~0#1| 4611686018427387904)))' at error location [2023-12-02 18:11:35,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:11:35,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:11:35,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-02 18:11:35,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117556627] [2023-12-02 18:11:35,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:11:35,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 18:11:35,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:11:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 18:11:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=3578, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 18:11:35,908 INFO L87 Difference]: Start difference. First operand 963 states and 1182 transitions. Second operand has 20 states, 19 states have (on average 9.842105263157896) internal successors, (187), 20 states have internal predecessors, (187), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:11:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:11:38,252 INFO L93 Difference]: Finished difference Result 1051 states and 1267 transitions. [2023-12-02 18:11:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 18:11:38,253 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 9.842105263157896) internal successors, (187), 20 states have internal predecessors, (187), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 108 [2023-12-02 18:11:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:11:38,257 INFO L225 Difference]: With dead ends: 1051 [2023-12-02 18:11:38,257 INFO L226 Difference]: Without dead ends: 1050 [2023-12-02 18:11:38,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2338 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=612, Invalid=5550, Unknown=0, NotChecked=0, Total=6162 [2023-12-02 18:11:38,258 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 521 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:11:38,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 641 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 18:11:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2023-12-02 18:11:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 995. [2023-12-02 18:11:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 939 states have (on average 1.2385516506922258) internal successors, (1163), 964 states have internal predecessors, (1163), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 18:11:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1219 transitions. [2023-12-02 18:11:38,357 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1219 transitions. Word has length 108 [2023-12-02 18:11:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:11:38,357 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1219 transitions. [2023-12-02 18:11:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 9.842105263157896) internal successors, (187), 20 states have internal predecessors, (187), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:11:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1219 transitions. [2023-12-02 18:11:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 18:11:38,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:11:38,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:11:38,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 18:11:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:38,559 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:11:38,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:11:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1995281019, now seen corresponding path program 1 times [2023-12-02 18:11:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:11:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025063315] [2023-12-02 18:11:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:11:38,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:11:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980114724] [2023-12-02 18:11:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:38,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:11:38,570 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:11:38,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 18:11:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:38,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:11:38,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 18:11:38,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 18:11:39,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:11:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025063315] [2023-12-02 18:11:39,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:11:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980114724] [2023-12-02 18:11:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980114724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:11:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1374597824] [2023-12-02 18:11:39,007 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:11:39,007 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:11:39,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:11:39,008 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:11:39,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:11:44,202 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:11:44,241 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:11:44,267 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:11:54,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '63523#(and (<= (* 2 |ULTIMATE.start_main_~Y~0#1|) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775807 |ULTIMATE.start_main_#t~post6#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~X~0#1| (+ |ULTIMATE.start_main_~Y~0#1| 4611686018427387904)))' at error location [2023-12-02 18:11:54,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:11:54,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:11:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 18:11:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38960362] [2023-12-02 18:11:54,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:11:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:11:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:11:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:11:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2504, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 18:11:54,407 INFO L87 Difference]: Start difference. First operand 995 states and 1219 transitions. Second operand has 10 states, 9 states have (on average 15.666666666666666) internal successors, (141), 10 states have internal predecessors, (141), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:11:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:11:54,886 INFO L93 Difference]: Finished difference Result 1463 states and 1775 transitions. [2023-12-02 18:11:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:11:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.666666666666666) internal successors, (141), 10 states have internal predecessors, (141), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 110 [2023-12-02 18:11:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:11:54,893 INFO L225 Difference]: With dead ends: 1463 [2023-12-02 18:11:54,893 INFO L226 Difference]: Without dead ends: 1462 [2023-12-02 18:11:54,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=286, Invalid=2906, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:11:54,895 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 160 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:11:54,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 662 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:11:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-02 18:11:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1244. [2023-12-02 18:11:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1181 states have (on average 1.2438611346316681) internal successors, (1469), 1206 states have internal predecessors, (1469), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-02 18:11:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1539 transitions. [2023-12-02 18:11:55,030 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1539 transitions. Word has length 110 [2023-12-02 18:11:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:11:55,030 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1539 transitions. [2023-12-02 18:11:55,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.666666666666666) internal successors, (141), 10 states have internal predecessors, (141), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 18:11:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1539 transitions. [2023-12-02 18:11:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 18:11:55,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:11:55,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:11:55,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 18:11:55,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:55,232 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:11:55,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:11:55,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1124288553, now seen corresponding path program 1 times [2023-12-02 18:11:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:11:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985201084] [2023-12-02 18:11:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:11:55,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:11:55,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58609850] [2023-12-02 18:11:55,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:55,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:55,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:11:55,240 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:11:55,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 18:11:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:55,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:11:55,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:11:55,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:11:56,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:11:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985201084] [2023-12-02 18:11:56,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:11:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58609850] [2023-12-02 18:11:56,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58609850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:11:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1230557292] [2023-12-02 18:11:56,353 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:11:56,353 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:11:56,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:11:56,353 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:11:56,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:11:59,507 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 18:11:59,555 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:11:59,581 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:12:07,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1230557292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:12:07,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:12:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [6, 6] total 33 [2023-12-02 18:12:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541092674] [2023-12-02 18:12:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:12:07,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:12:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:12:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:12:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 18:12:07,118 INFO L87 Difference]: Start difference. First operand 1244 states and 1539 transitions. Second operand has 24 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:12:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:12:11,983 INFO L93 Difference]: Finished difference Result 1262 states and 1548 transitions. [2023-12-02 18:12:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 18:12:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2023-12-02 18:12:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:12:11,988 INFO L225 Difference]: With dead ends: 1262 [2023-12-02 18:12:11,988 INFO L226 Difference]: Without dead ends: 1261 [2023-12-02 18:12:11,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 239 SyntacticMatches, 57 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=596, Invalid=1854, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 18:12:11,989 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 479 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:12:11,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 130 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 18:12:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-12-02 18:12:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1248. [2023-12-02 18:12:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1185 states have (on average 1.2413502109704642) internal successors, (1471), 1210 states have internal predecessors, (1471), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-02 18:12:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1541 transitions. [2023-12-02 18:12:12,117 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1541 transitions. Word has length 110 [2023-12-02 18:12:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:12:12,117 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1541 transitions. [2023-12-02 18:12:12,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:12:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1541 transitions. [2023-12-02 18:12:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 18:12:12,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:12:12,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:12:12,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 18:12:12,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-02 18:12:12,318 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:12:12,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:12:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash 186250622, now seen corresponding path program 3 times [2023-12-02 18:12:12,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:12:12,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443911262] [2023-12-02 18:12:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:12:12,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:12:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396459946] [2023-12-02 18:12:12,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 18:12:12,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:12:12,328 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:12:12,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 18:12:12,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 18:12:12,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:12:12,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:12:12,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:12:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 88 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:12:13,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:12:13,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:12:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443911262] [2023-12-02 18:12:13,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:12:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396459946] [2023-12-02 18:12:13,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396459946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:12:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1173168395] [2023-12-02 18:12:13,253 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:12:13,254 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:12:13,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:12:13,254 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:12:13,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:12:18,186 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:12:18,225 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:12:18,256 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:12:29,836 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '70205#(and (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:12:29,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:12:29,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:12:29,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 18:12:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704146040] [2023-12-02 18:12:29,837 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:12:29,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:12:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:12:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:12:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2712, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 18:12:29,838 INFO L87 Difference]: Start difference. First operand 1248 states and 1541 transitions. Second operand has 9 states, 8 states have (on average 13.0) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 18:12:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:12:31,193 INFO L93 Difference]: Finished difference Result 1313 states and 1605 transitions. [2023-12-02 18:12:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:12:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.0) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 117 [2023-12-02 18:12:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:12:31,196 INFO L225 Difference]: With dead ends: 1313 [2023-12-02 18:12:31,196 INFO L226 Difference]: Without dead ends: 1312 [2023-12-02 18:12:31,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 195 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=288, Invalid=3134, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 18:12:31,197 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 92 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:12:31,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 709 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:12:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-02 18:12:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1248. [2023-12-02 18:12:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1185 states have (on average 1.2354430379746835) internal successors, (1464), 1210 states have internal predecessors, (1464), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-02 18:12:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1534 transitions. [2023-12-02 18:12:31,322 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1534 transitions. Word has length 117 [2023-12-02 18:12:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:12:31,322 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1534 transitions. [2023-12-02 18:12:31,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.0) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 18:12:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1534 transitions. [2023-12-02 18:12:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 18:12:31,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:12:31,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:12:31,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 18:12:31,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:31,524 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:12:31,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:12:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 702772060, now seen corresponding path program 2 times [2023-12-02 18:12:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:12:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303948477] [2023-12-02 18:12:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:12:31,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:12:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030551088] [2023-12-02 18:12:31,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:12:31,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:31,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:12:31,535 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:12:31,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 18:12:31,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:12:31,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:12:31,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:12:31,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:12:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 54 proven. 9 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 18:12:32,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:12:36,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:12:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303948477] [2023-12-02 18:12:36,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:12:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030551088] [2023-12-02 18:12:36,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030551088] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:12:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1191571637] [2023-12-02 18:12:36,712 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:12:36,712 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:12:36,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:12:36,712 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:12:36,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:12:41,534 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:12:41,572 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:12:41,598 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:12:54,670 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73479#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:12:54,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:12:54,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:12:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 18:12:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022382910] [2023-12-02 18:12:54,671 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:12:54,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:12:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:12:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:12:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3009, Unknown=2, NotChecked=0, Total=3306 [2023-12-02 18:12:54,672 INFO L87 Difference]: Start difference. First operand 1248 states and 1534 transitions. Second operand has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 9 states have internal predecessors, (73), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:12:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:12:55,340 INFO L93 Difference]: Finished difference Result 1248 states and 1534 transitions. [2023-12-02 18:12:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:12:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 9 states have internal predecessors, (73), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 119 [2023-12-02 18:12:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:12:55,344 INFO L225 Difference]: With dead ends: 1248 [2023-12-02 18:12:55,344 INFO L226 Difference]: Without dead ends: 1246 [2023-12-02 18:12:55,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 229 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=335, Invalid=3323, Unknown=2, NotChecked=0, Total=3660 [2023-12-02 18:12:55,345 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 281 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:12:55,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 84 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:12:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2023-12-02 18:12:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1231. [2023-12-02 18:12:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1170 states have (on average 1.2205128205128206) internal successors, (1428), 1193 states have internal predecessors, (1428), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-02 18:12:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1498 transitions. [2023-12-02 18:12:55,500 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1498 transitions. Word has length 119 [2023-12-02 18:12:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:12:55,500 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1498 transitions. [2023-12-02 18:12:55,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 9 states have internal predecessors, (73), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:12:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1498 transitions. [2023-12-02 18:12:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 18:12:55,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:12:55,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:12:55,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 18:12:55,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:55,702 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:12:55,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:12:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1512258946, now seen corresponding path program 2 times [2023-12-02 18:12:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:12:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263539003] [2023-12-02 18:12:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:12:55,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:12:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919379520] [2023-12-02 18:12:55,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:12:55,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:12:55,713 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:12:55,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 18:12:55,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:12:55,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:12:55,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:12:55,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:12:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 18:12:56,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:12:56,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:12:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263539003] [2023-12-02 18:12:56,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:12:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919379520] [2023-12-02 18:12:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919379520] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:12:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1709521691] [2023-12-02 18:12:56,951 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 18:12:56,951 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:12:56,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:12:56,951 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:12:56,951 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:13:01,848 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 112 for LOIs [2023-12-02 18:13:01,886 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:13:01,912 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:13:14,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '76586#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387905) 0) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:13:14,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:13:14,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:13:14,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 18:13:14,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460318134] [2023-12-02 18:13:14,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:13:14,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:13:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:13:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:13:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 18:13:14,613 INFO L87 Difference]: Start difference. First operand 1231 states and 1498 transitions. Second operand has 9 states, 7 states have (on average 11.714285714285714) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:13:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:13:16,316 INFO L93 Difference]: Finished difference Result 1232 states and 1498 transitions. [2023-12-02 18:13:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:13:16,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.714285714285714) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 121 [2023-12-02 18:13:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:13:16,319 INFO L225 Difference]: With dead ends: 1232 [2023-12-02 18:13:16,319 INFO L226 Difference]: Without dead ends: 1230 [2023-12-02 18:13:16,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 206 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=324, Invalid=3216, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 18:13:16,319 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 228 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:13:16,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 162 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 18:13:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2023-12-02 18:13:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1229. [2023-12-02 18:13:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1170 states have (on average 1.2076923076923076) internal successors, (1413), 1191 states have internal predecessors, (1413), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-02 18:13:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1483 transitions. [2023-12-02 18:13:16,478 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1483 transitions. Word has length 121 [2023-12-02 18:13:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:13:16,478 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1483 transitions. [2023-12-02 18:13:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.714285714285714) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 18:13:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1483 transitions. [2023-12-02 18:13:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 18:13:16,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:13:16,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:13:16,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-02 18:13:16,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:13:16,680 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:13:16,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:13:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1000600464, now seen corresponding path program 2 times [2023-12-02 18:13:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:13:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458551748] [2023-12-02 18:13:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:13:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:13:16,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:13:16,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374315200] [2023-12-02 18:13:16,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:13:16,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:13:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:13:16,690 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:13:16,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77844542-43b6-439d-9e74-d033043ac4a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-02 18:13:16,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:13:16,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:13:16,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 18:13:16,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:13:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 41 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 18:13:19,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:13:19,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:13:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458551748] [2023-12-02 18:13:19,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:13:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374315200] [2023-12-02 18:13:19,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374315200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:13:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1495135226] [2023-12-02 18:13:19,986 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 18:13:19,986 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:13:19,987 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:13:19,987 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:13:19,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:13:23,158 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-12-02 18:13:23,198 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-12-02 18:13:23,224 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:13:38,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '79678#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 3) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 4)) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 9223372036854775808 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:13:38,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:13:38,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:13:38,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 18:13:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031118802] [2023-12-02 18:13:38,968 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:13:38,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:13:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:13:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:13:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 18:13:38,969 INFO L87 Difference]: Start difference. First operand 1229 states and 1483 transitions. Second operand has 14 states, 11 states have (on average 6.909090909090909) internal successors, (76), 13 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:13:41,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:13:45,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]