./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/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_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/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_f9d569a8-a194-49ca-b1b6-6f5866356fb1/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 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:33:21,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:33:21,680 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 17:33:21,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:33:21,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:33:21,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:33:21,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:33:21,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:33:21,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:33:21,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:33:21,710 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:33:21,710 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:33:21,711 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:33:21,711 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:33:21,712 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:33:21,712 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:33:21,713 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:33:21,713 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:33:21,714 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:33:21,714 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:33:21,715 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:33:21,715 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:33:21,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:33:21,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:33:21,717 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:33:21,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:33:21,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:33:21,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:33:21,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:33:21,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:33:21,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:33:21,720 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:33:21,720 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:33:21,721 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:33:21,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:33:21,721 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:33:21,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:33:21,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:33:21,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:33:21,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:33:21,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:33:21,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:33:21,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:33:21,723 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:33:21,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:33:21,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:33:21,724 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:33:21,724 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:33:21,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:33:21,724 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_f9d569a8-a194-49ca-b1b6-6f5866356fb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2023-12-02 17:33:21,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:33:21,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:33:21,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:33:21,970 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:33:21,971 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:33:21,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-12-02 17:33:24,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:33:24,919 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:33:24,920 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-12-02 17:33:24,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/data/570525b3b/d405cb2adcd4451eaf7b0d583c1b47dc/FLAG6df7f096b [2023-12-02 17:33:24,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/data/570525b3b/d405cb2adcd4451eaf7b0d583c1b47dc [2023-12-02 17:33:24,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:33:24,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:33:24,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:33:24,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:33:24,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:33:24,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:33:24" (1/1) ... [2023-12-02 17:33:24,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69183dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:24, skipping insertion in model container [2023-12-02 17:33:24,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:33:24" (1/1) ... [2023-12-02 17:33:24,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:33:25,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:33:25,139 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:33:25,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:33:25,172 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:33:25,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25 WrapperNode [2023-12-02 17:33:25,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:33:25,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:33:25,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:33:25,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:33:25,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,210 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2023-12-02 17:33:25,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:33:25,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:33:25,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:33:25,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:33:25,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:33:25,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:33:25,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:33:25,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:33:25,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (1/1) ... [2023-12-02 17:33:25,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:33:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:25,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:33:25,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:33:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:33:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:33:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:33:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:33:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:33:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:33:25,383 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:33:25,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:33:25,718 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:33:25,748 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:33:25,748 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:33:25,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:33:25 BoogieIcfgContainer [2023-12-02 17:33:25,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:33:25,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:33:25,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:33:25,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:33:25,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:33:24" (1/3) ... [2023-12-02 17:33:25,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716d2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:33:25, skipping insertion in model container [2023-12-02 17:33:25,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:33:25" (2/3) ... [2023-12-02 17:33:25,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716d2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:33:25, skipping insertion in model container [2023-12-02 17:33:25,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:33:25" (3/3) ... [2023-12-02 17:33:25,757 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2023-12-02 17:33:25,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:33:25,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-12-02 17:33:25,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:33:25,821 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;@4cf5cfef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:33:25,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-12-02 17:33:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 128 states have internal predecessors, (132), 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 17:33:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 17:33:25,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:25,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 17:33:25,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:25,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash 6296, now seen corresponding path program 1 times [2023-12-02 17:33:25,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:25,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091404182] [2023-12-02 17:33:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:25,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:25,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:25,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091404182] [2023-12-02 17:33:25,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091404182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:25,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:25,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:33:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398069632] [2023-12-02 17:33:25,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:25,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:33:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:33:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:33:26,038 INFO L87 Difference]: Start difference. First operand has 132 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 128 states have internal predecessors, (132), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:26,168 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2023-12-02 17:33:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:33:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 17:33:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:26,180 INFO L225 Difference]: With dead ends: 180 [2023-12-02 17:33:26,180 INFO L226 Difference]: Without dead ends: 125 [2023-12-02 17:33:26,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 17:33:26,186 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:26,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 70 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-02 17:33:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-02 17:33:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.8656716417910448) internal successors, (125), 122 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-12-02 17:33:26,229 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 2 [2023-12-02 17:33:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:26,230 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-12-02 17:33:26,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-12-02 17:33:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:33:26,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:26,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:33:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:33:26,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:26,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash 195212, now seen corresponding path program 1 times [2023-12-02 17:33:26,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:26,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215447431] [2023-12-02 17:33:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:26,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:26,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:26,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215447431] [2023-12-02 17:33:26,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215447431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:26,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:26,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:33:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373321604] [2023-12-02 17:33:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:26,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:33:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:33:26,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:33:26,273 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:26,363 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2023-12-02 17:33:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:33:26,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 17:33:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:26,366 INFO L225 Difference]: With dead ends: 125 [2023-12-02 17:33:26,366 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 17:33:26,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 17:33:26,368 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 118 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:26,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 67 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 17:33:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 17:33:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.8059701492537314) internal successors, (121), 118 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2023-12-02 17:33:26,381 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 3 [2023-12-02 17:33:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:26,382 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2023-12-02 17:33:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2023-12-02 17:33:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:33:26,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:26,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:33:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:33:26,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:26,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 6051610, now seen corresponding path program 1 times [2023-12-02 17:33:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878944559] [2023-12-02 17:33:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:26,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:26,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878944559] [2023-12-02 17:33:26,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878944559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:26,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:26,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:33:26,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304751850] [2023-12-02 17:33:26,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:26,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:33:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:33:26,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:33:26,435 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:26,537 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-12-02 17:33:26,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:33:26,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 17:33:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:26,539 INFO L225 Difference]: With dead ends: 121 [2023-12-02 17:33:26,539 INFO L226 Difference]: Without dead ends: 120 [2023-12-02 17:33:26,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 17:33:26,541 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 116 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:26,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 53 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-02 17:33:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-02 17:33:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.791044776119403) internal successors, (120), 117 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2023-12-02 17:33:26,554 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 4 [2023-12-02 17:33:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:26,554 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2023-12-02 17:33:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2023-12-02 17:33:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 17:33:26,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:26,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 17:33:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:33:26,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:26,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash 187599950, now seen corresponding path program 1 times [2023-12-02 17:33:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:26,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114332808] [2023-12-02 17:33:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:26,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114332808] [2023-12-02 17:33:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114332808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:26,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:33:26,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487138612] [2023-12-02 17:33:26,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:26,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:33:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:33:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:33:26,606 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:26,699 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2023-12-02 17:33:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:33:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 17:33:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:26,701 INFO L225 Difference]: With dead ends: 120 [2023-12-02 17:33:26,701 INFO L226 Difference]: Without dead ends: 119 [2023-12-02 17:33:26,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 17:33:26,703 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:26,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 53 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-02 17:33:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-02 17:33:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 116 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2023-12-02 17:33:26,713 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 5 [2023-12-02 17:33:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:26,713 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2023-12-02 17:33:26,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2023-12-02 17:33:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:33:26,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:26,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:26,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:33:26,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:26,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:26,715 INFO L85 PathProgramCache]: Analyzing trace with hash -105073040, now seen corresponding path program 1 times [2023-12-02 17:33:26,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:26,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960034264] [2023-12-02 17:33:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:26,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:26,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:26,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960034264] [2023-12-02 17:33:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960034264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:26,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:33:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883398387] [2023-12-02 17:33:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:26,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:26,780 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:26,819 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2023-12-02 17:33:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:33:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 17:33:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:26,820 INFO L225 Difference]: With dead ends: 167 [2023-12-02 17:33:26,820 INFO L226 Difference]: Without dead ends: 123 [2023-12-02 17:33:26,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 17:33:26,822 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 4 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:26,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 339 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-02 17:33:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-02 17:33:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.732394366197183) internal successors, (123), 120 states have internal predecessors, (123), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2023-12-02 17:33:26,833 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 7 [2023-12-02 17:33:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:26,834 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2023-12-02 17:33:26,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2023-12-02 17:33:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:33:26,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:26,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:26,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:33:26,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:26,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash 800272963, now seen corresponding path program 1 times [2023-12-02 17:33:26,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:26,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882707081] [2023-12-02 17:33:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:26,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:26,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121804805] [2023-12-02 17:33:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:26,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:26,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:26,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:26,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:33:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:26,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:26,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:26,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:26,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882707081] [2023-12-02 17:33:26,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121804805] [2023-12-02 17:33:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121804805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:26,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:33:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992202303] [2023-12-02 17:33:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:33:26,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:26,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:33:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:33:26,923 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:26,967 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2023-12-02 17:33:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:33:26,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 17:33:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:26,969 INFO L225 Difference]: With dead ends: 229 [2023-12-02 17:33:26,969 INFO L226 Difference]: Without dead ends: 223 [2023-12-02 17:33:26,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 17:33:26,970 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 99 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:26,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 212 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-02 17:33:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 147. [2023-12-02 17:33:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 143 states have internal predecessors, (161), 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 17:33:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2023-12-02 17:33:26,983 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 10 [2023-12-02 17:33:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:26,984 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2023-12-02 17:33:26,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2023-12-02 17:33:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:33:26,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:26,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:26,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:33:27,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 17:33:27,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:27,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash 263173317, now seen corresponding path program 1 times [2023-12-02 17:33:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562638979] [2023-12-02 17:33:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:27,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:27,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347514368] [2023-12-02 17:33:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:27,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:27,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:27,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:33:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:27,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:27,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:27,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:27,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:27,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562638979] [2023-12-02 17:33:27,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:27,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347514368] [2023-12-02 17:33:27,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347514368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:27,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:33:27,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207531007] [2023-12-02 17:33:27,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:27,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:33:27,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:27,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:33:27,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:33:27,261 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:27,318 INFO L93 Difference]: Finished difference Result 259 states and 280 transitions. [2023-12-02 17:33:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:33:27,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 17:33:27,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:27,321 INFO L225 Difference]: With dead ends: 259 [2023-12-02 17:33:27,321 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 17:33:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 17:33:27,322 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 100 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 210 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 17:33:27,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 210 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:27,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 17:33:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 199. [2023-12-02 17:33:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 145 states have (on average 1.703448275862069) internal successors, (247), 194 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2023-12-02 17:33:27,337 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 12 [2023-12-02 17:33:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:27,337 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2023-12-02 17:33:27,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2023-12-02 17:33:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 17:33:27,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:27,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:27,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:33:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 17:33:27,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:27,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash -493510841, now seen corresponding path program 1 times [2023-12-02 17:33:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:27,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999151712] [2023-12-02 17:33:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:27,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175188945] [2023-12-02 17:33:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:27,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:27,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:27,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:33:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:27,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:27,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:27,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:27,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:27,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999151712] [2023-12-02 17:33:27,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:27,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175188945] [2023-12-02 17:33:27,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175188945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:27,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:27,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057328740] [2023-12-02 17:33:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:27,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:27,632 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:27,791 INFO L93 Difference]: Finished difference Result 302 states and 354 transitions. [2023-12-02 17:33:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:33:27,792 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 17:33:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:27,794 INFO L225 Difference]: With dead ends: 302 [2023-12-02 17:33:27,794 INFO L226 Difference]: Without dead ends: 300 [2023-12-02 17:33:27,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 17:33:27,795 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 198 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:27,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 250 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-02 17:33:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 200. [2023-12-02 17:33:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 146 states have (on average 1.6917808219178083) internal successors, (247), 195 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 253 transitions. [2023-12-02 17:33:27,808 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 253 transitions. Word has length 14 [2023-12-02 17:33:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:27,808 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 253 transitions. [2023-12-02 17:33:27,808 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 253 transitions. [2023-12-02 17:33:27,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 17:33:27,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:27,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:27,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 17:33:28,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:28,015 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:28,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1881033179, now seen corresponding path program 1 times [2023-12-02 17:33:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586964405] [2023-12-02 17:33:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:28,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:28,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860263832] [2023-12-02 17:33:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:28,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:28,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:28,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:33:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:28,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:28,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:28,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:28,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:28,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586964405] [2023-12-02 17:33:28,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860263832] [2023-12-02 17:33:28,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860263832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:28,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114629767] [2023-12-02 17:33:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:28,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:28,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:28,090 INFO L87 Difference]: Start difference. First operand 200 states and 253 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:28,245 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2023-12-02 17:33:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:33:28,246 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 17:33:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:28,248 INFO L225 Difference]: With dead ends: 300 [2023-12-02 17:33:28,248 INFO L226 Difference]: Without dead ends: 298 [2023-12-02 17:33:28,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 17:33:28,249 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 193 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:28,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 252 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-02 17:33:28,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 201. [2023-12-02 17:33:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6802721088435375) internal successors, (247), 196 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 253 transitions. [2023-12-02 17:33:28,260 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 253 transitions. Word has length 15 [2023-12-02 17:33:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:28,261 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 253 transitions. [2023-12-02 17:33:28,261 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 253 transitions. [2023-12-02 17:33:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:33:28,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:28,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:28,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:33:28,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:28,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:28,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1817513527, now seen corresponding path program 1 times [2023-12-02 17:33:28,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:28,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844550006] [2023-12-02 17:33:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:28,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:28,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383915258] [2023-12-02 17:33:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:28,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:28,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:28,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:33:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:28,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:28,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:28,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:28,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844550006] [2023-12-02 17:33:28,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383915258] [2023-12-02 17:33:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383915258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981015290] [2023-12-02 17:33:28,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:28,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:28,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:28,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:28,543 INFO L87 Difference]: Start difference. First operand 201 states and 253 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:28,680 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2023-12-02 17:33:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:33:28,681 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 17:33:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:28,682 INFO L225 Difference]: With dead ends: 278 [2023-12-02 17:33:28,683 INFO L226 Difference]: Without dead ends: 276 [2023-12-02 17:33:28,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 17:33:28,684 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 220 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 251 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 17:33:28,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 251 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-02 17:33:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 201. [2023-12-02 17:33:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6598639455782314) internal successors, (244), 196 states have internal predecessors, (244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2023-12-02 17:33:28,695 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 16 [2023-12-02 17:33:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:28,695 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2023-12-02 17:33:28,696 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2023-12-02 17:33:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:33:28,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:28,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:28,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:33:28,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 17:33:28,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:28,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash -508344419, now seen corresponding path program 1 times [2023-12-02 17:33:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:28,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622688210] [2023-12-02 17:33:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:28,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104999397] [2023-12-02 17:33:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:28,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:28,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:33:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:28,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:28,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:28,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:28,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622688210] [2023-12-02 17:33:28,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104999397] [2023-12-02 17:33:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104999397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:28,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:28,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690877683] [2023-12-02 17:33:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:28,977 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:29,108 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2023-12-02 17:33:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:33:29,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 17:33:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:29,110 INFO L225 Difference]: With dead ends: 276 [2023-12-02 17:33:29,110 INFO L226 Difference]: Without dead ends: 274 [2023-12-02 17:33:29,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 17:33:29,112 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 215 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:29,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 253 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-02 17:33:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 201. [2023-12-02 17:33:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6394557823129252) internal successors, (241), 196 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 247 transitions. [2023-12-02 17:33:29,122 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 247 transitions. Word has length 17 [2023-12-02 17:33:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:29,122 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 247 transitions. [2023-12-02 17:33:29,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 247 transitions. [2023-12-02 17:33:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:33:29,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:29,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:29,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:33:29,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 17:33:29,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:29,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1421192267, now seen corresponding path program 1 times [2023-12-02 17:33:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555755359] [2023-12-02 17:33:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:29,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:29,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122200999] [2023-12-02 17:33:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:29,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:29,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:33:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:29,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:33:29,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:29,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:29,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555755359] [2023-12-02 17:33:29,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122200999] [2023-12-02 17:33:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122200999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:29,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:29,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:29,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940910293] [2023-12-02 17:33:29,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:29,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:33:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:29,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:33:29,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:33:29,415 INFO L87 Difference]: Start difference. First operand 201 states and 247 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:29,559 INFO L93 Difference]: Finished difference Result 294 states and 342 transitions. [2023-12-02 17:33:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:33:29,560 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 17:33:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:29,562 INFO L225 Difference]: With dead ends: 294 [2023-12-02 17:33:29,562 INFO L226 Difference]: Without dead ends: 292 [2023-12-02 17:33:29,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 17:33:29,563 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 267 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:29,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 256 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-02 17:33:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 204. [2023-12-02 17:33:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 150 states have (on average 1.62) internal successors, (243), 199 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 249 transitions. [2023-12-02 17:33:29,572 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 249 transitions. Word has length 18 [2023-12-02 17:33:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:29,572 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 249 transitions. [2023-12-02 17:33:29,572 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 249 transitions. [2023-12-02 17:33:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 17:33:29,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:29,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:29,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:33:29,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 17:33:29,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:29,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1107287391, now seen corresponding path program 1 times [2023-12-02 17:33:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932675191] [2023-12-02 17:33:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:29,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399184370] [2023-12-02 17:33:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:29,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:29,783 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:29,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:33:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:29,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:33:29,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:29,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:29,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932675191] [2023-12-02 17:33:29,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399184370] [2023-12-02 17:33:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399184370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925455830] [2023-12-02 17:33:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:29,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:33:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:33:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:33:29,862 INFO L87 Difference]: Start difference. First operand 204 states and 249 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:30,007 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2023-12-02 17:33:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:33:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 17:33:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:30,009 INFO L225 Difference]: With dead ends: 277 [2023-12-02 17:33:30,009 INFO L226 Difference]: Without dead ends: 275 [2023-12-02 17:33:30,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 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 17:33:30,010 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 312 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:30,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 257 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-02 17:33:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 204. [2023-12-02 17:33:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 150 states have (on average 1.6) internal successors, (240), 199 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 246 transitions. [2023-12-02 17:33:30,022 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 246 transitions. Word has length 19 [2023-12-02 17:33:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:30,022 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 246 transitions. [2023-12-02 17:33:30,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 246 transitions. [2023-12-02 17:33:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:33:30,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:30,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:30,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:33:30,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 17:33:30,224 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash -33829171, now seen corresponding path program 1 times [2023-12-02 17:33:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048239037] [2023-12-02 17:33:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:30,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348951962] [2023-12-02 17:33:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:30,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:30,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:30,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:30,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:33:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:30,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:33:30,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:30,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:30,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048239037] [2023-12-02 17:33:30,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348951962] [2023-12-02 17:33:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348951962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:30,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527246805] [2023-12-02 17:33:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:30,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:33:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:30,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:33:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:30,409 INFO L87 Difference]: Start difference. First operand 204 states and 246 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:30,687 INFO L93 Difference]: Finished difference Result 294 states and 332 transitions. [2023-12-02 17:33:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:33:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 17:33:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:30,690 INFO L225 Difference]: With dead ends: 294 [2023-12-02 17:33:30,690 INFO L226 Difference]: Without dead ends: 292 [2023-12-02 17:33:30,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:33:30,691 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 495 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:30,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 198 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:33:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-02 17:33:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 206. [2023-12-02 17:33:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 152 states have (on average 1.5855263157894737) internal successors, (241), 201 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 247 transitions. [2023-12-02 17:33:30,702 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 247 transitions. Word has length 20 [2023-12-02 17:33:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:30,702 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 247 transitions. [2023-12-02 17:33:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 247 transitions. [2023-12-02 17:33:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 17:33:30,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:30,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:30,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 17:33:30,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 17:33:30,904 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:30,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1048704223, now seen corresponding path program 1 times [2023-12-02 17:33:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611139110] [2023-12-02 17:33:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:30,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:30,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049738089] [2023-12-02 17:33:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:30,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:30,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:30,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:30,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:33:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:30,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:33:30,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:31,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:31,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611139110] [2023-12-02 17:33:31,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:31,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049738089] [2023-12-02 17:33:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049738089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:31,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264179801] [2023-12-02 17:33:31,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:31,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:33:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:31,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:33:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:31,098 INFO L87 Difference]: Start difference. First operand 206 states and 247 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:31,381 INFO L93 Difference]: Finished difference Result 292 states and 330 transitions. [2023-12-02 17:33:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:33:31,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 17:33:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:31,383 INFO L225 Difference]: With dead ends: 292 [2023-12-02 17:33:31,383 INFO L226 Difference]: Without dead ends: 290 [2023-12-02 17:33:31,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:33:31,384 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 383 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:31,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 200 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:33:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-02 17:33:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 207. [2023-12-02 17:33:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.5751633986928104) internal successors, (241), 202 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2023-12-02 17:33:31,395 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 21 [2023-12-02 17:33:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:31,395 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2023-12-02 17:33:31,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2023-12-02 17:33:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:33:31,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:31,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:31,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 17:33:31,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 17:33:31,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:31,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash -355316783, now seen corresponding path program 1 times [2023-12-02 17:33:31,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:31,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042550455] [2023-12-02 17:33:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:31,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:31,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:31,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443920379] [2023-12-02 17:33:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:31,604 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:31,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:33:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:31,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:33:31,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:31,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:31,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042550455] [2023-12-02 17:33:31,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443920379] [2023-12-02 17:33:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443920379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:31,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:31,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528427072] [2023-12-02 17:33:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:31,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:33:31,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:33:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:31,840 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:32,191 INFO L93 Difference]: Finished difference Result 288 states and 328 transitions. [2023-12-02 17:33:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:33:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 17:33:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:32,193 INFO L225 Difference]: With dead ends: 288 [2023-12-02 17:33:32,193 INFO L226 Difference]: Without dead ends: 284 [2023-12-02 17:33:32,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:33:32,194 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 366 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:32,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 134 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:33:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-02 17:33:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 208. [2023-12-02 17:33:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 156 states have (on average 1.544871794871795) internal successors, (241), 203 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2023-12-02 17:33:32,204 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 24 [2023-12-02 17:33:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:32,204 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2023-12-02 17:33:32,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2023-12-02 17:33:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 17:33:32,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:32,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:32,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:33:32,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 17:33:32,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:32,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1870081701, now seen corresponding path program 1 times [2023-12-02 17:33:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166745967] [2023-12-02 17:33:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:32,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898799522] [2023-12-02 17:33:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:32,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:32,414 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:32,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:33:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:32,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:33:32,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:32,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:32,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166745967] [2023-12-02 17:33:32,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898799522] [2023-12-02 17:33:32,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898799522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:32,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:32,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:32,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78813321] [2023-12-02 17:33:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:32,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:33:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:33:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:32,645 INFO L87 Difference]: Start difference. First operand 208 states and 247 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:32,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:32,974 INFO L93 Difference]: Finished difference Result 282 states and 322 transitions. [2023-12-02 17:33:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:33:32,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 17:33:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:32,976 INFO L225 Difference]: With dead ends: 282 [2023-12-02 17:33:32,976 INFO L226 Difference]: Without dead ends: 278 [2023-12-02 17:33:32,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:33:32,977 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 351 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:32,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 136 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:33:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-02 17:33:32,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2023-12-02 17:33:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 202 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2023-12-02 17:33:32,987 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 25 [2023-12-02 17:33:32,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:32,987 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2023-12-02 17:33:32,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:32,988 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2023-12-02 17:33:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 17:33:32,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:32,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:32,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-02 17:33:33,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:33,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:33,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2137957971, now seen corresponding path program 1 times [2023-12-02 17:33:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784808359] [2023-12-02 17:33:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:33,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:33,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382038550] [2023-12-02 17:33:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:33,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:33,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:33,201 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:33,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:33:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:33,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:33,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:33,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:33,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784808359] [2023-12-02 17:33:33,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382038550] [2023-12-02 17:33:33,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382038550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:33,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:33,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802562886] [2023-12-02 17:33:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:33,307 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:33,467 INFO L93 Difference]: Finished difference Result 234 states and 270 transitions. [2023-12-02 17:33:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 17:33:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:33,469 INFO L225 Difference]: With dead ends: 234 [2023-12-02 17:33:33,469 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 17:33:33,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:33,470 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:33,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 143 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:33:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 17:33:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 208. [2023-12-02 17:33:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 158 states have (on average 1.5126582278481013) internal successors, (239), 203 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 245 transitions. [2023-12-02 17:33:33,480 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 245 transitions. Word has length 26 [2023-12-02 17:33:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:33,480 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 245 transitions. [2023-12-02 17:33:33,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 245 transitions. [2023-12-02 17:33:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 17:33:33,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:33,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:33,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:33:33,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:33:33,687 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:33,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1852187751, now seen corresponding path program 1 times [2023-12-02 17:33:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018266026] [2023-12-02 17:33:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:33,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747475501] [2023-12-02 17:33:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:33,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:33,694 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:33,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:33:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:33,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:33,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:33,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:33,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018266026] [2023-12-02 17:33:33,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747475501] [2023-12-02 17:33:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747475501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345130921] [2023-12-02 17:33:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:33,796 INFO L87 Difference]: Start difference. First operand 208 states and 245 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:33,966 INFO L93 Difference]: Finished difference Result 232 states and 268 transitions. [2023-12-02 17:33:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-02 17:33:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:33,967 INFO L225 Difference]: With dead ends: 232 [2023-12-02 17:33:33,967 INFO L226 Difference]: Without dead ends: 230 [2023-12-02 17:33:33,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:33,968 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 39 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:33,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 147 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:33:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-02 17:33:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 209. [2023-12-02 17:33:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.5031446540880504) internal successors, (239), 204 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2023-12-02 17:33:33,978 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 27 [2023-12-02 17:33:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:33,978 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2023-12-02 17:33:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:33:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2023-12-02 17:33:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 17:33:33,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:33,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:33,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 17:33:34,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:34,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:34,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1816322767, now seen corresponding path program 1 times [2023-12-02 17:33:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:34,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228359687] [2023-12-02 17:33:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:34,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:34,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637920730] [2023-12-02 17:33:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:34,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:34,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:34,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:34,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:33:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:34,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:34,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:34,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:34,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228359687] [2023-12-02 17:33:34,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637920730] [2023-12-02 17:33:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637920730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161425619] [2023-12-02 17:33:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:34,372 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:34,516 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2023-12-02 17:33:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-12-02 17:33:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:34,518 INFO L225 Difference]: With dead ends: 230 [2023-12-02 17:33:34,518 INFO L226 Difference]: Without dead ends: 228 [2023-12-02 17:33:34,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 17:33:34,519 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 204 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:34,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 100 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-02 17:33:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 218. [2023-12-02 17:33:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 168 states have (on average 1.4821428571428572) internal successors, (249), 213 states have internal predecessors, (249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2023-12-02 17:33:34,529 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 35 [2023-12-02 17:33:34,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:34,530 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2023-12-02 17:33:34,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2023-12-02 17:33:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 17:33:34,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:34,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:34,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 17:33:34,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:34,736 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:34,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash -471430822, now seen corresponding path program 1 times [2023-12-02 17:33:34,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:34,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115413555] [2023-12-02 17:33:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:34,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526734678] [2023-12-02 17:33:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:34,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:34,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:34,745 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:34,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:33:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:34,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:34,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:34,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:34,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:34,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115413555] [2023-12-02 17:33:34,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:34,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526734678] [2023-12-02 17:33:34,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526734678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:34,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:34,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:34,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100199760] [2023-12-02 17:33:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:34,827 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:34,889 INFO L93 Difference]: Finished difference Result 218 states and 255 transitions. [2023-12-02 17:33:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:34,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-12-02 17:33:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:34,891 INFO L225 Difference]: With dead ends: 218 [2023-12-02 17:33:34,891 INFO L226 Difference]: Without dead ends: 217 [2023-12-02 17:33:34,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:34,892 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:34,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 129 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-02 17:33:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-12-02 17:33:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 168 states have (on average 1.4702380952380953) internal successors, (247), 212 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 253 transitions. [2023-12-02 17:33:34,900 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 253 transitions. Word has length 36 [2023-12-02 17:33:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:34,900 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 253 transitions. [2023-12-02 17:33:34,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 253 transitions. [2023-12-02 17:33:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 17:33:34,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:34,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:34,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 17:33:35,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:35,104 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:35,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2073449796, now seen corresponding path program 1 times [2023-12-02 17:33:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:35,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903195987] [2023-12-02 17:33:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:35,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:35,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280614574] [2023-12-02 17:33:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:35,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:35,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:35,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 17:33:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:35,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:35,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:35,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:35,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:35,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903195987] [2023-12-02 17:33:35,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280614574] [2023-12-02 17:33:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280614574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:35,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:35,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359330900] [2023-12-02 17:33:35,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:35,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:35,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:35,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:35,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:35,190 INFO L87 Difference]: Start difference. First operand 217 states and 253 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:35,229 INFO L93 Difference]: Finished difference Result 217 states and 253 transitions. [2023-12-02 17:33:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:35,232 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-12-02 17:33:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:35,234 INFO L225 Difference]: With dead ends: 217 [2023-12-02 17:33:35,234 INFO L226 Difference]: Without dead ends: 216 [2023-12-02 17:33:35,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 17:33:35,235 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 80 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:35,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 194 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-02 17:33:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-02 17:33:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 168 states have (on average 1.4583333333333333) internal successors, (245), 211 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2023-12-02 17:33:35,244 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 38 [2023-12-02 17:33:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:35,245 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2023-12-02 17:33:35,245 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2023-12-02 17:33:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 17:33:35,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:35,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:35,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 17:33:35,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:35,446 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:35,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1492513594, now seen corresponding path program 1 times [2023-12-02 17:33:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:35,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322509271] [2023-12-02 17:33:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:35,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:35,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016028070] [2023-12-02 17:33:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:35,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:35,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:35,454 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:35,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 17:33:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:35,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:35,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:35,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:35,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322509271] [2023-12-02 17:33:35,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016028070] [2023-12-02 17:33:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016028070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:35,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95111575] [2023-12-02 17:33:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:35,660 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:35,774 INFO L93 Difference]: Finished difference Result 225 states and 259 transitions. [2023-12-02 17:33:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:35,775 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-12-02 17:33:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:35,776 INFO L225 Difference]: With dead ends: 225 [2023-12-02 17:33:35,776 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 17:33:35,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:35,777 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 165 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:35,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 97 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:33:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 17:33:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 217. [2023-12-02 17:33:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 169 states have (on average 1.455621301775148) internal successors, (246), 212 states have internal predecessors, (246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 252 transitions. [2023-12-02 17:33:35,784 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 252 transitions. Word has length 38 [2023-12-02 17:33:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:35,785 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 252 transitions. [2023-12-02 17:33:35,785 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 252 transitions. [2023-12-02 17:33:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 17:33:35,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:35,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:35,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 17:33:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:35,986 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:35,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 147565895, now seen corresponding path program 1 times [2023-12-02 17:33:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334056010] [2023-12-02 17:33:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:35,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504802925] [2023-12-02 17:33:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:35,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:35,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:35,995 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:36,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:33:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:36,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:36,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:36,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:36,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334056010] [2023-12-02 17:33:36,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:36,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504802925] [2023-12-02 17:33:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504802925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:36,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:36,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427985293] [2023-12-02 17:33:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:36,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:36,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:36,087 INFO L87 Difference]: Start difference. First operand 217 states and 252 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:36,130 INFO L93 Difference]: Finished difference Result 235 states and 270 transitions. [2023-12-02 17:33:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:36,130 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-12-02 17:33:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:36,132 INFO L225 Difference]: With dead ends: 235 [2023-12-02 17:33:36,132 INFO L226 Difference]: Without dead ends: 234 [2023-12-02 17:33:36,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 17:33:36,133 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 37 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:36,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 299 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-02 17:33:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2023-12-02 17:33:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 178 states have (on average 1.4438202247191012) internal successors, (257), 221 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 263 transitions. [2023-12-02 17:33:36,142 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 263 transitions. Word has length 39 [2023-12-02 17:33:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:36,142 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 263 transitions. [2023-12-02 17:33:36,142 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 263 transitions. [2023-12-02 17:33:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 17:33:36,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:36,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:36,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 17:33:36,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:36,344 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 976718965, now seen corresponding path program 1 times [2023-12-02 17:33:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672607755] [2023-12-02 17:33:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:36,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:36,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026282285] [2023-12-02 17:33:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:36,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:36,350 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:36,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:33:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:36,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:36,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:36,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:36,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672607755] [2023-12-02 17:33:36,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026282285] [2023-12-02 17:33:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026282285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972690380] [2023-12-02 17:33:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:36,428 INFO L87 Difference]: Start difference. First operand 226 states and 263 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:36,460 INFO L93 Difference]: Finished difference Result 226 states and 263 transitions. [2023-12-02 17:33:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:36,461 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-12-02 17:33:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:36,462 INFO L225 Difference]: With dead ends: 226 [2023-12-02 17:33:36,462 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 17:33:36,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 17:33:36,463 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 77 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:36,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 190 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 17:33:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-12-02 17:33:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 178 states have (on average 1.4269662921348314) internal successors, (254), 219 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2023-12-02 17:33:36,473 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 39 [2023-12-02 17:33:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:36,473 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2023-12-02 17:33:36,474 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2023-12-02 17:33:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 17:33:36,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:36,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:36,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 17:33:36,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:36,675 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:36,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash 213516968, now seen corresponding path program 1 times [2023-12-02 17:33:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:36,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046986784] [2023-12-02 17:33:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:36,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:36,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:36,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112219293] [2023-12-02 17:33:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:36,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:36,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:36,683 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:36,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 17:33:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:36,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:33:36,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:36,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:36,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046986784] [2023-12-02 17:33:36,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112219293] [2023-12-02 17:33:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112219293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:36,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:36,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:33:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806976954] [2023-12-02 17:33:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:33:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:33:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:33:36,767 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:36,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:36,809 INFO L93 Difference]: Finished difference Result 265 states and 274 transitions. [2023-12-02 17:33:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:36,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-12-02 17:33:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:36,811 INFO L225 Difference]: With dead ends: 265 [2023-12-02 17:33:36,811 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 17:33:36,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 17:33:36,812 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 63 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:36,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 299 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 17:33:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 232. [2023-12-02 17:33:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 186 states have (on average 1.413978494623656) internal successors, (263), 227 states have internal predecessors, (263), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 269 transitions. [2023-12-02 17:33:36,819 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 269 transitions. Word has length 40 [2023-12-02 17:33:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:36,819 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 269 transitions. [2023-12-02 17:33:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 269 transitions. [2023-12-02 17:33:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 17:33:36,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:36,820 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] [2023-12-02 17:33:36,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 17:33:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:37,021 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:37,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash 76905769, now seen corresponding path program 1 times [2023-12-02 17:33:37,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:37,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507434666] [2023-12-02 17:33:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:37,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951598964] [2023-12-02 17:33:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:37,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:37,028 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:37,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 17:33:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:37,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:37,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:37,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:37,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507434666] [2023-12-02 17:33:37,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951598964] [2023-12-02 17:33:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951598964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:37,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029442316] [2023-12-02 17:33:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:33:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:33:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:33:37,111 INFO L87 Difference]: Start difference. First operand 232 states and 269 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:37,132 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2023-12-02 17:33:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:33:37,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-12-02 17:33:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:37,134 INFO L225 Difference]: With dead ends: 232 [2023-12-02 17:33:37,134 INFO L226 Difference]: Without dead ends: 231 [2023-12-02 17:33:37,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:37,135 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 82 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:37,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 312 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-02 17:33:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-12-02 17:33:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 186 states have (on average 1.403225806451613) internal successors, (261), 226 states have internal predecessors, (261), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2023-12-02 17:33:37,142 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 41 [2023-12-02 17:33:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:37,142 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2023-12-02 17:33:37,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2023-12-02 17:33:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 17:33:37,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:37,143 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] [2023-12-02 17:33:37,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 17:33:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:37,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:37,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1910888408, now seen corresponding path program 1 times [2023-12-02 17:33:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462563917] [2023-12-02 17:33:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:37,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:37,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207115455] [2023-12-02 17:33:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:37,350 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:37,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:33:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:37,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:33:37,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:37,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:37,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462563917] [2023-12-02 17:33:37,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:37,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207115455] [2023-12-02 17:33:37,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207115455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:37,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:37,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:33:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534846768] [2023-12-02 17:33:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:37,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:33:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:33:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:33:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:33:37,438 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:37,467 INFO L93 Difference]: Finished difference Result 292 states and 338 transitions. [2023-12-02 17:33:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:33:37,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-12-02 17:33:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:37,469 INFO L225 Difference]: With dead ends: 292 [2023-12-02 17:33:37,469 INFO L226 Difference]: Without dead ends: 291 [2023-12-02 17:33:37,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:33:37,470 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 79 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:37,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 401 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:33:37,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-02 17:33:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 230. [2023-12-02 17:33:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 186 states have (on average 1.39247311827957) internal successors, (259), 225 states have internal predecessors, (259), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:33:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 265 transitions. [2023-12-02 17:33:37,480 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 265 transitions. Word has length 42 [2023-12-02 17:33:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:37,480 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 265 transitions. [2023-12-02 17:33:37,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:33:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 265 transitions. [2023-12-02 17:33:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 17:33:37,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:37,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:37,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:33:37,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 17:33:37,681 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:33:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1882244330, now seen corresponding path program 1 times [2023-12-02 17:33:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:33:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659151158] [2023-12-02 17:33:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:33:37,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:33:37,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610238240] [2023-12-02 17:33:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:37,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:33:37,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:33:37,688 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:33:37,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 17:33:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:37,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:33:37,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:37,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:33:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:33:37,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:33:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659151158] [2023-12-02 17:33:37,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:33:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610238240] [2023-12-02 17:33:37,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610238240] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:33:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2083945979] [2023-12-02 17:33:37,979 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:33:37,979 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:33:37,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:33:37,987 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:33:37,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:33:42,852 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:33:43,027 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:34:01,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14828#(and (<= (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775809) 0) (<= ~counter~0 5) (exists ((v_~counter~0_12 Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 1 v_~counter~0_12) (= |ULTIMATE.start_main_~xy~0#1| 0) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ v_~counter~0_12 1) ~counter~0) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))))' at error location [2023-12-02 17:34:01,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:34:01,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:34:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 17:34:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229482652] [2023-12-02 17:34:01,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:34:01,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:34:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:34:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=867, Unknown=1, NotChecked=0, Total=1056 [2023-12-02 17:34:01,938 INFO L87 Difference]: Start difference. First operand 230 states and 265 transitions. Second operand has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 10 states have internal predecessors, (83), 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 17:34:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:12,636 INFO L93 Difference]: Finished difference Result 416 states and 489 transitions. [2023-12-02 17:34:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:34:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 10 states have internal predecessors, (83), 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 44 [2023-12-02 17:34:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:12,639 INFO L225 Difference]: With dead ends: 416 [2023-12-02 17:34:12,639 INFO L226 Difference]: Without dead ends: 414 [2023-12-02 17:34:12,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=240, Invalid=1091, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 17:34:12,640 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 594 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:12,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 323 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 17:34:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-02 17:34:12,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 326. [2023-12-02 17:34:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 280 states have (on average 1.417857142857143) internal successors, (397), 319 states have internal predecessors, (397), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:34:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 407 transitions. [2023-12-02 17:34:12,660 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 407 transitions. Word has length 44 [2023-12-02 17:34:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:12,661 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 407 transitions. [2023-12-02 17:34:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 10 states have internal predecessors, (83), 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 17:34:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 407 transitions. [2023-12-02 17:34:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 17:34:12,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:12,662 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] [2023-12-02 17:34:12,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-02 17:34:12,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 17:34:12,862 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:34:12,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:12,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1779967856, now seen corresponding path program 1 times [2023-12-02 17:34:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151275033] [2023-12-02 17:34:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:12,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:34:12,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524699300] [2023-12-02 17:34:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:12,869 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:34:12,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 17:34:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:12,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:34:12,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:34:13,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:34:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:34:14,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:14,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151275033] [2023-12-02 17:34:14,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:34:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524699300] [2023-12-02 17:34:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524699300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:34:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1023157364] [2023-12-02 17:34:14,201 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:34:14,201 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:34:14,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:34:14,202 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:34:14,202 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:34:17,705 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:34:17,839 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:34:38,046 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15901#(and (<= 9223372036854775808 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= ~counter~0 5) (exists ((v_~counter~0_19 Int)) (and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (= |ULTIMATE.start_main_~xy~0#1| 0) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)) (= ~counter~0 (+ v_~counter~0_19 1)))))' at error location [2023-12-02 17:34:38,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:34:38,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:34:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 17:34:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511919554] [2023-12-02 17:34:38,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:34:38,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:34:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:34:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=865, Unknown=5, NotChecked=0, Total=1056 [2023-12-02 17:34:38,047 INFO L87 Difference]: Start difference. First operand 326 states and 407 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 10 states have internal predecessors, (85), 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 17:34:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:47,076 INFO L93 Difference]: Finished difference Result 418 states and 489 transitions. [2023-12-02 17:34:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:34:47,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 10 states have internal predecessors, (85), 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 45 [2023-12-02 17:34:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:47,078 INFO L225 Difference]: With dead ends: 418 [2023-12-02 17:34:47,078 INFO L226 Difference]: Without dead ends: 416 [2023-12-02 17:34:47,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 89 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=236, Invalid=1091, Unknown=5, NotChecked=0, Total=1332 [2023-12-02 17:34:47,079 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 710 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:47,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 398 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 17:34:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-12-02 17:34:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 330. [2023-12-02 17:34:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 284 states have (on average 1.4049295774647887) internal successors, (399), 323 states have internal predecessors, (399), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:34:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 409 transitions. [2023-12-02 17:34:47,089 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 409 transitions. Word has length 45 [2023-12-02 17:34:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:47,089 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 409 transitions. [2023-12-02 17:34:47,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 10 states have internal predecessors, (85), 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 17:34:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 409 transitions. [2023-12-02 17:34:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 17:34:47,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:47,090 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] [2023-12-02 17:34:47,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 17:34:47,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:47,291 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:34:47,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1337015936, now seen corresponding path program 1 times [2023-12-02 17:34:47,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:47,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727015007] [2023-12-02 17:34:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:47,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:47,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:34:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500358942] [2023-12-02 17:34:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:47,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:47,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:47,298 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:34:47,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 17:34:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:47,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:34:47,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:34:47,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:34:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:34:47,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:47,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727015007] [2023-12-02 17:34:47,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:34:47,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500358942] [2023-12-02 17:34:47,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500358942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:34:47,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939552193] [2023-12-02 17:34:47,509 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-12-02 17:34:47,509 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:34:47,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:34:47,509 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:34:47,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:34:51,041 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:34:51,203 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:14,472 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16998#(and (<= 1 |#StackHeapBarrier|) (<= 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) (= |ULTIMATE.start_main_~xy~0#1| 0) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= 6 ~counter~0) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= ~counter~0 2147483647) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 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 17:35:14,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:35:14,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:35:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-02 17:35:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188743046] [2023-12-02 17:35:14,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:35:14,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:35:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:35:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1105, Unknown=1, NotChecked=0, Total=1260 [2023-12-02 17:35:14,474 INFO L87 Difference]: Start difference. First operand 330 states and 409 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:35:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:14,732 INFO L93 Difference]: Finished difference Result 643 states and 748 transitions. [2023-12-02 17:35:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:35:14,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2023-12-02 17:35:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:14,735 INFO L225 Difference]: With dead ends: 643 [2023-12-02 17:35:14,735 INFO L226 Difference]: Without dead ends: 574 [2023-12-02 17:35:14,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 95 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=224, Invalid=1581, Unknown=1, NotChecked=0, Total=1806 [2023-12-02 17:35:14,737 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 315 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:14,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 836 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:35:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-12-02 17:35:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 412. [2023-12-02 17:35:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 361 states have (on average 1.407202216066482) internal successors, (508), 400 states have internal predecessors, (508), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:35:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 522 transitions. [2023-12-02 17:35:14,752 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 522 transitions. Word has length 48 [2023-12-02 17:35:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:14,752 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 522 transitions. [2023-12-02 17:35:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:35:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 522 transitions. [2023-12-02 17:35:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 17:35:14,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:14,753 INFO L195 NwaCegarLoop]: trace histogram [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 17:35:14,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 17:35:14,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 17:35:14,954 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:35:14,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1356102034, now seen corresponding path program 1 times [2023-12-02 17:35:14,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408868891] [2023-12-02 17:35:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:14,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:14,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853206910] [2023-12-02 17:35:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:14,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:14,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:14,960 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:14,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 17:35:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:15,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:35:15,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:35:15,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:35:16,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408868891] [2023-12-02 17:35:16,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853206910] [2023-12-02 17:35:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853206910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:35:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [118567040] [2023-12-02 17:35:16,706 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:35:16,706 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:16,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:16,707 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:16,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:35:20,037 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:35:20,175 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:48,337 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18427#(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) (<= ~counter~0 5) (exists ((|v_ULTIMATE.start_main_~xy~0#1_82| Int) (v_~counter~0_33 Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 1 v_~counter~0_33) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (= |ULTIMATE.start_main_~y~0#1| 0) (= |v_ULTIMATE.start_main_~xy~0#1_82| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= ~counter~0 (+ v_~counter~0_33 1)) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 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 17:35:48,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:35:48,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:35:48,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 17:35:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906271961] [2023-12-02 17:35:48,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:35:48,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:35:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:35:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=991, Unknown=1, NotChecked=0, Total=1190 [2023-12-02 17:35:48,339 INFO L87 Difference]: Start difference. First operand 412 states and 522 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 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 17:36:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:08,500 INFO L93 Difference]: Finished difference Result 572 states and 661 transitions. [2023-12-02 17:36:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 17:36:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 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 48 [2023-12-02 17:36:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:08,504 INFO L225 Difference]: With dead ends: 572 [2023-12-02 17:36:08,504 INFO L226 Difference]: Without dead ends: 570 [2023-12-02 17:36:08,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 95 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=312, Invalid=1579, Unknown=1, NotChecked=0, Total=1892 [2023-12-02 17:36:08,505 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 950 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:08,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 327 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 17:36:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-02 17:36:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 422. [2023-12-02 17:36:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 371 states have (on average 1.3908355795148248) internal successors, (516), 410 states have internal predecessors, (516), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:36:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 530 transitions. [2023-12-02 17:36:08,520 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 530 transitions. Word has length 48 [2023-12-02 17:36:08,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:08,520 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 530 transitions. [2023-12-02 17:36:08,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 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 17:36:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 530 transitions. [2023-12-02 17:36:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 17:36:08,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:08,521 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] [2023-12-02 17:36:08,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 17:36:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:08,721 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:36:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 910509972, now seen corresponding path program 1 times [2023-12-02 17:36:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:36:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756476594] [2023-12-02 17:36:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:36:08,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:36:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110978859] [2023-12-02 17:36:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:08,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:08,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:36:08,728 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:36:08,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 17:36:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:08,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:36:08,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:36:08,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:36:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:36:09,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:36:09,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756476594] [2023-12-02 17:36:09,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:36:09,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110978859] [2023-12-02 17:36:09,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110978859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:36:09,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [131640887] [2023-12-02 17:36:09,897 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:36:09,897 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:36:09,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:36:09,898 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:36:09,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:36:13,225 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:36:13,380 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:36:33,837 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19802#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= ~counter~0 5) (<= 4611686018427387904 |ULTIMATE.start_main_~yx~0#1|) (exists ((v_~counter~0_40 Int) (|v_ULTIMATE.start_main_~xy~0#1_88| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 1 v_~counter~0_40) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (= ~counter~0 (+ v_~counter~0_40 1)) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |v_ULTIMATE.start_main_~xy~0#1_88| 0) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 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 17:36:33,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:36:33,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:36:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 17:36:33,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735756638] [2023-12-02 17:36:33,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:36:33,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:36:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:36:33,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:36:33,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=996, Unknown=1, NotChecked=0, Total=1190 [2023-12-02 17:36:33,839 INFO L87 Difference]: Start difference. First operand 422 states and 530 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 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 17:36:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:52,253 INFO L93 Difference]: Finished difference Result 568 states and 653 transitions. [2023-12-02 17:36:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 17:36:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 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 49 [2023-12-02 17:36:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:52,255 INFO L225 Difference]: With dead ends: 568 [2023-12-02 17:36:52,255 INFO L226 Difference]: Without dead ends: 566 [2023-12-02 17:36:52,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 98 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=302, Invalid=1588, Unknown=2, NotChecked=0, Total=1892 [2023-12-02 17:36:52,256 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 834 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:52,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 295 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-02 17:36:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-02 17:36:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 424. [2023-12-02 17:36:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 373 states have (on average 1.3780160857908847) internal successors, (514), 412 states have internal predecessors, (514), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:36:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 528 transitions. [2023-12-02 17:36:52,270 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 528 transitions. Word has length 49 [2023-12-02 17:36:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:52,270 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 528 transitions. [2023-12-02 17:36:52,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 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 17:36:52,270 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 528 transitions. [2023-12-02 17:36:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 17:36:52,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:52,270 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, 1] [2023-12-02 17:36:52,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 17:36:52,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:52,471 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:36:52,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 441575802, now seen corresponding path program 1 times [2023-12-02 17:36:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:36:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210985972] [2023-12-02 17:36:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:36:52,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:36:52,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577631538] [2023-12-02 17:36:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:52,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:36:52,477 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:36:52,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 17:36:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:52,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:36:52,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:36:52,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:36:52,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:36:52,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210985972] [2023-12-02 17:36:52,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:36:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577631538] [2023-12-02 17:36:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577631538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:36:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2008122900] [2023-12-02 17:36:52,906 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:36:52,906 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:36:52,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:36:52,906 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:36:52,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:36:57,188 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:36:57,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:37:38,054 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21095#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= 1 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= |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 17:37:38,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:37:38,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:37:38,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 17:37:38,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092319945] [2023-12-02 17:37:38,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:37:38,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:37:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:38,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:37:38,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1280, Unknown=1, NotChecked=0, Total=1640 [2023-12-02 17:37:38,056 INFO L87 Difference]: Start difference. First operand 424 states and 528 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:37:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:39,403 INFO L93 Difference]: Finished difference Result 523 states and 596 transitions. [2023-12-02 17:37:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:37:39,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-12-02 17:37:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:39,406 INFO L225 Difference]: With dead ends: 523 [2023-12-02 17:37:39,406 INFO L226 Difference]: Without dead ends: 521 [2023-12-02 17:37:39,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=412, Invalid=1657, Unknown=1, NotChecked=0, Total=2070 [2023-12-02 17:37:39,408 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 272 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:39,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 461 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:37:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-02 17:37:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 423. [2023-12-02 17:37:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 373 states have (on average 1.3646112600536193) internal successors, (509), 411 states have internal predecessors, (509), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:37:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 523 transitions. [2023-12-02 17:37:39,422 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 523 transitions. Word has length 50 [2023-12-02 17:37:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:39,422 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 523 transitions. [2023-12-02 17:37:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:37:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 523 transitions. [2023-12-02 17:37:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 17:37:39,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:39,423 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:37:39,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 17:37:39,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 17:37:39,624 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:37:39,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:39,624 INFO L85 PathProgramCache]: Analyzing trace with hash 803948036, now seen corresponding path program 1 times [2023-12-02 17:37:39,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:39,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573499135] [2023-12-02 17:37:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:39,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:39,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:37:39,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314931428] [2023-12-02 17:37:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:39,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:37:39,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:37:39,631 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:37:39,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 17:37:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:39,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:37:39,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:37:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:37:40,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:37:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:37:40,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573499135] [2023-12-02 17:37:40,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:37:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314931428] [2023-12-02 17:37:40,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314931428] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:37:40,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225559328] [2023-12-02 17:37:40,876 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:37:40,876 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:37:40,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:37:40,877 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:37:40,877 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:37:44,586 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:37:44,667 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:38:27,564 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22432#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 1 ~counter~0) (<= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= 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 17:38:27,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:38:27,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:38:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 17:38:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258529543] [2023-12-02 17:38:27,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:38:27,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:38:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:38:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1285, Unknown=2, NotChecked=0, Total=1640 [2023-12-02 17:38:27,566 INFO L87 Difference]: Start difference. First operand 423 states and 523 transitions. Second operand has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 10 states have internal predecessors, (97), 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 17:38:32,850 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 [] [2023-12-02 17:38:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:37,811 INFO L93 Difference]: Finished difference Result 673 states and 773 transitions. [2023-12-02 17:38:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:38:37,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 10 states have internal predecessors, (97), 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 51 [2023-12-02 17:38:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:37,814 INFO L225 Difference]: With dead ends: 673 [2023-12-02 17:38:37,814 INFO L226 Difference]: Without dead ends: 671 [2023-12-02 17:38:37,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=392, Invalid=1498, Unknown=2, NotChecked=0, Total=1892 [2023-12-02 17:38:37,816 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 557 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:37,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 414 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 391 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2023-12-02 17:38:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2023-12-02 17:38:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 548. [2023-12-02 17:38:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 496 states have (on average 1.3850806451612903) internal successors, (687), 534 states have internal predecessors, (687), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:38:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 705 transitions. [2023-12-02 17:38:37,835 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 705 transitions. Word has length 51 [2023-12-02 17:38:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:37,836 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 705 transitions. [2023-12-02 17:38:37,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 10 states have internal predecessors, (97), 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 17:38:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 705 transitions. [2023-12-02 17:38:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 17:38:37,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:37,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:37,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 17:38:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 17:38:38,037 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:38:38,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash -988729583, now seen corresponding path program 1 times [2023-12-02 17:38:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798034354] [2023-12-02 17:38:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:38,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86462143] [2023-12-02 17:38:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:38,043 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:38,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 17:38:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:38,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:38:38,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:38,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:38,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:38,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798034354] [2023-12-02 17:38:38,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:38,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86462143] [2023-12-02 17:38:38,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86462143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:38,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:38,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:38:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133704577] [2023-12-02 17:38:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:38,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:38:38,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:38:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:38:38,619 INFO L87 Difference]: Start difference. First operand 548 states and 705 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:38:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:39,240 INFO L93 Difference]: Finished difference Result 554 states and 710 transitions. [2023-12-02 17:38:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:38:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-12-02 17:38:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:39,244 INFO L225 Difference]: With dead ends: 554 [2023-12-02 17:38:39,244 INFO L226 Difference]: Without dead ends: 553 [2023-12-02 17:38:39,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:38:39,245 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:39,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 17:38:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-02 17:38:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2023-12-02 17:38:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 499 states have (on average 1.3827655310621243) internal successors, (690), 537 states have internal predecessors, (690), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:38:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 708 transitions. [2023-12-02 17:38:39,274 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 708 transitions. Word has length 52 [2023-12-02 17:38:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:39,275 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 708 transitions. [2023-12-02 17:38:39,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:38:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 708 transitions. [2023-12-02 17:38:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 17:38:39,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:39,276 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:38:39,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 17:38:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 17:38:39,476 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:38:39,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2010798094, now seen corresponding path program 1 times [2023-12-02 17:38:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755164523] [2023-12-02 17:38:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:39,483 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135341494] [2023-12-02 17:38:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:39,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:39,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:39,485 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:39,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 17:38:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:39,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:38:39,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:38:39,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:38:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:38:40,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755164523] [2023-12-02 17:38:40,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135341494] [2023-12-02 17:38:40,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135341494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:38:40,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [823217407] [2023-12-02 17:38:40,036 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:38:40,036 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:38:40,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:38:40,036 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:38:40,036 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:38:43,477 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:38:43,614 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:39:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [823217407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:39:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:39:11,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4] total 27 [2023-12-02 17:39:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075332390] [2023-12-02 17:39:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:11,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 17:39:11,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 17:39:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=604, Unknown=2, NotChecked=0, Total=756 [2023-12-02 17:39:11,965 INFO L87 Difference]: Start difference. First operand 551 states and 708 transitions. Second operand has 24 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:39:15,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:18,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:20,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:22,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:25,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:27,210 WARN L539 Checker$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 17:39:29,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:31,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:33,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:35,636 WARN L539 Checker$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 17:39:37,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:39,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:44,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:48,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:51,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:55,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:57,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:39:59,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:01,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:03,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:06,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:10,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:13,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:15,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:20,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:22,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:25,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:27,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:30,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:32,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:35,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:42,653 WARN L539 Checker$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 17:40:44,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:48,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:50,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:53,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:40:56,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:03,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:05,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:07,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:12,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:14,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:17,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:19,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:21,751 WARN L539 Checker$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 17:41:23,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:41:27,140 INFO L93 Difference]: Finished difference Result 646 states and 780 transitions. [2023-12-02 17:41:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 17:41:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-12-02 17:41:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:41:27,143 INFO L225 Difference]: With dead ends: 646 [2023-12-02 17:41:27,143 INFO L226 Difference]: Without dead ends: 580 [2023-12-02 17:41:27,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 109 SyntacticMatches, 19 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=783, Invalid=2875, Unknown=2, NotChecked=0, Total=3660 [2023-12-02 17:41:27,145 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 307 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 46 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:41:27,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 211 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2642 Invalid, 34 Unknown, 0 Unchecked, 119.9s Time] [2023-12-02 17:41:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-02 17:41:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 526. [2023-12-02 17:41:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 471 states have (on average 1.365180467091295) internal successors, (643), 509 states have internal predecessors, (643), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:41:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 661 transitions. [2023-12-02 17:41:27,174 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 661 transitions. Word has length 52 [2023-12-02 17:41:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:41:27,174 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 661 transitions. [2023-12-02 17:41:27,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:41:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 661 transitions. [2023-12-02 17:41:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 17:41:27,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:41:27,175 INFO L195 NwaCegarLoop]: trace histogram [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 17:41:27,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 17:41:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 17:41:27,376 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:41:27,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:41:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash 358317236, now seen corresponding path program 1 times [2023-12-02 17:41:27,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:41:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456326231] [2023-12-02 17:41:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:41:27,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:41:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055942000] [2023-12-02 17:41:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:27,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:41:27,382 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:41:27,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 17:41:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:41:27,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:41:27,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:41:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:41:28,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:41:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:41:31,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:41:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456326231] [2023-12-02 17:41:31,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:41:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055942000] [2023-12-02 17:41:31,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055942000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:41:31,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570023349] [2023-12-02 17:41:31,430 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:41:31,430 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:41:31,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:41:31,431 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:41:31,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:41:34,749 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:41:34,923 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:42:13,050 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27027#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (exists ((v_~counter~0_67 Int) (|v_ULTIMATE.start_main_~xy~0#1_107| Int)) (and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (= |v_ULTIMATE.start_main_~xy~0#1_107| 0) (= ~counter~0 (+ v_~counter~0_67 1)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= ~counter~0 5) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~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 17:42:13,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:42:13,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:42:13,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 17:42:13,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492738769] [2023-12-02 17:42:13,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:42:13,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:42:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:42:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:42:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1128, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 17:42:13,052 INFO L87 Difference]: Start difference. First operand 526 states and 661 transitions. Second operand has 14 states, 13 states have (on average 7.923076923076923) internal successors, (103), 14 states have internal predecessors, (103), 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 17:42:16,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:42:29,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:42:37,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:42:55,178 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 [] [2023-12-02 17:43:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:01,538 INFO L93 Difference]: Finished difference Result 551 states and 675 transitions. [2023-12-02 17:43:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:43:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.923076923076923) internal successors, (103), 14 states have internal predecessors, (103), 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 54 [2023-12-02 17:43:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:01,541 INFO L225 Difference]: With dead ends: 551 [2023-12-02 17:43:01,541 INFO L226 Difference]: Without dead ends: 549 [2023-12-02 17:43:01,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 107 SyntacticMatches, 18 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=336, Invalid=1825, Unknown=1, NotChecked=0, Total=2162 [2023-12-02 17:43:01,543 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 710 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:01,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 285 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 827 Invalid, 3 Unknown, 0 Unchecked, 44.0s Time] [2023-12-02 17:43:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-12-02 17:43:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 526. [2023-12-02 17:43:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 471 states have (on average 1.3588110403397027) internal successors, (640), 509 states have internal predecessors, (640), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:43:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 658 transitions. [2023-12-02 17:43:01,580 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 658 transitions. Word has length 54 [2023-12-02 17:43:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:01,580 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 658 transitions. [2023-12-02 17:43:01,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.923076923076923) internal successors, (103), 14 states have internal predecessors, (103), 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 17:43:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 658 transitions. [2023-12-02 17:43:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 17:43:01,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:01,581 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:43:01,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 17:43:01,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-02 17:43:01,781 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:43:01,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1678361598, now seen corresponding path program 1 times [2023-12-02 17:43:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:01,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693765323] [2023-12-02 17:43:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:01,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:01,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827351914] [2023-12-02 17:43:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:01,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:01,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:01,790 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:01,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 17:43:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:43:01,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:43:01,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:43:02,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:43:03,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:43:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693765323] [2023-12-02 17:43:03,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:43:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827351914] [2023-12-02 17:43:03,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827351914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:43:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1776208699] [2023-12-02 17:43:03,061 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:43:03,062 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:43:03,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:43:03,062 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:43:03,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:43:06,824 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:43:06,876 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:43:32,803 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28454#(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| 9223372036854775807) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 1 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= ~counter~0 5) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= |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 17:43:32,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:43:32,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:43:32,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 17:43:32,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638236689] [2023-12-02 17:43:32,804 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:43:32,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:43:32,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:43:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1420, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 17:43:32,805 INFO L87 Difference]: Start difference. First operand 526 states and 658 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:43:35,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:35,147 INFO L93 Difference]: Finished difference Result 610 states and 737 transitions. [2023-12-02 17:43:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 17:43:35,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-12-02 17:43:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:35,150 INFO L225 Difference]: With dead ends: 610 [2023-12-02 17:43:35,150 INFO L226 Difference]: Without dead ends: 608 [2023-12-02 17:43:35,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 83 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 17:43:35,152 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 364 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:35,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 438 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 17:43:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-02 17:43:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 531. [2023-12-02 17:43:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 477 states have (on average 1.3522012578616351) internal successors, (645), 514 states have internal predecessors, (645), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:43:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 663 transitions. [2023-12-02 17:43:35,181 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 663 transitions. Word has length 54 [2023-12-02 17:43:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:35,181 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 663 transitions. [2023-12-02 17:43:35,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:43:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 663 transitions. [2023-12-02 17:43:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 17:43:35,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:35,182 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:43:35,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 17:43:35,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 17:43:35,382 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:43:35,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash 489602056, now seen corresponding path program 1 times [2023-12-02 17:43:35,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:35,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870097720] [2023-12-02 17:43:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:35,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:35,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005987323] [2023-12-02 17:43:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:35,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:35,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:35,390 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 17:43:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:43:35,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 17:43:35,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:43:36,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:43:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:43:37,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:43:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870097720] [2023-12-02 17:43:37,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:43:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005987323] [2023-12-02 17:43:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005987323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:43:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [971895077] [2023-12-02 17:43:37,931 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:43:37,931 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:43:37,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:43:37,931 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:43:37,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:43:41,674 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:43:41,727 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:44:05,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30041#(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| 9223372036854775807) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 1 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= |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 17:44:05,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:44:05,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:44:05,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-02 17:44:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165468380] [2023-12-02 17:44:05,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:44:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 17:44:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:44:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 17:44:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 17:44:05,069 INFO L87 Difference]: Start difference. First operand 531 states and 663 transitions. Second operand has 15 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 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 17:44:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:44:20,399 INFO L93 Difference]: Finished difference Result 734 states and 824 transitions. [2023-12-02 17:44:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 17:44:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 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 55 [2023-12-02 17:44:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:44:20,403 INFO L225 Difference]: With dead ends: 734 [2023-12-02 17:44:20,403 INFO L226 Difference]: Without dead ends: 733 [2023-12-02 17:44:20,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 111 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=560, Invalid=2746, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 17:44:20,404 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1528 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:44:20,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 494 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 17:44:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-02 17:44:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 563. [2023-12-02 17:44:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 508 states have (on average 1.3562992125984252) internal successors, (689), 545 states have internal predecessors, (689), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:44:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 709 transitions. [2023-12-02 17:44:20,443 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 709 transitions. Word has length 55 [2023-12-02 17:44:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:44:20,443 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 709 transitions. [2023-12-02 17:44:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 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 17:44:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 709 transitions. [2023-12-02 17:44:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 17:44:20,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:44:20,444 INFO L195 NwaCegarLoop]: trace histogram [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 17:44:20,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 17:44:20,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 17:44:20,644 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:44:20,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:44:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2002205376, now seen corresponding path program 1 times [2023-12-02 17:44:20,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:44:20,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759989601] [2023-12-02 17:44:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:44:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:44:20,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:44:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474068965] [2023-12-02 17:44:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:44:20,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:44:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:44:20,652 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:44:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 17:44:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:44:20,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:44:20,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:44:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:44:21,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:44:22,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:44:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759989601] [2023-12-02 17:44:22,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:44:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474068965] [2023-12-02 17:44:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474068965] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:44:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2069007779] [2023-12-02 17:44:22,164 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:44:22,164 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:44:22,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:44:22,165 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:44:22,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:44:25,946 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:44:26,003 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:45:03,431 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31721#(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_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 1 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= ~counter~0 5) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:45:03,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:45:03,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:45:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 17:45:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129704446] [2023-12-02 17:45:03,431 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:45:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:45:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:45:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:45:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1854, Unknown=2, NotChecked=0, Total=2162 [2023-12-02 17:45:03,433 INFO L87 Difference]: Start difference. First operand 563 states and 709 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:45:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:45:05,998 INFO L93 Difference]: Finished difference Result 840 states and 1073 transitions. [2023-12-02 17:45:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:45:05,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-12-02 17:45:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:45:06,004 INFO L225 Difference]: With dead ends: 840 [2023-12-02 17:45:06,004 INFO L226 Difference]: Without dead ends: 834 [2023-12-02 17:45:06,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=367, Invalid=2387, Unknown=2, NotChecked=0, Total=2756 [2023-12-02 17:45:06,006 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 275 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:45:06,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 364 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 17:45:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-12-02 17:45:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 778. [2023-12-02 17:45:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 719 states have (on average 1.368567454798331) internal successors, (984), 756 states have internal predecessors, (984), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:45:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1012 transitions. [2023-12-02 17:45:06,043 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1012 transitions. Word has length 56 [2023-12-02 17:45:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:45:06,043 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1012 transitions. [2023-12-02 17:45:06,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:45:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1012 transitions. [2023-12-02 17:45:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 17:45:06,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:45:06,044 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:45:06,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-02 17:45:06,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-02 17:45:06,245 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:45:06,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:45:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1938824438, now seen corresponding path program 1 times [2023-12-02 17:45:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:45:06,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818233802] [2023-12-02 17:45:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:45:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:45:06,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:45:06,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649175703] [2023-12-02 17:45:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:45:06,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:45:06,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:45:06,250 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:45:06,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 17:45:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:45:06,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:45:06,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:45:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:45:07,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:45:07,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:45:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818233802] [2023-12-02 17:45:07,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:45:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649175703] [2023-12-02 17:45:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649175703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:45:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1967698283] [2023-12-02 17:45:07,540 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:45:07,541 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:45:07,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:45:07,541 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:45:07,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:45:11,265 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:45:11,320 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:45:45,211 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33734#(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| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 1 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) |ULTIMATE.start_main_~yx~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 17:45:45,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:45:45,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:45:45,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 17:45:45,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883303353] [2023-12-02 17:45:45,212 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:45:45,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:45:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:45:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:45:45,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1594, Unknown=4, NotChecked=0, Total=1980 [2023-12-02 17:45:45,213 INFO L87 Difference]: Start difference. First operand 778 states and 1012 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:45:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:45:48,145 INFO L93 Difference]: Finished difference Result 859 states and 1085 transitions. [2023-12-02 17:45:48,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 17:45:48,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-12-02 17:45:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:45:48,149 INFO L225 Difference]: With dead ends: 859 [2023-12-02 17:45:48,149 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 17:45:48,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=527, Invalid=2549, Unknown=4, NotChecked=0, Total=3080 [2023-12-02 17:45:48,151 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 397 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:45:48,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 467 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 17:45:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 17:45:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 790. [2023-12-02 17:45:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 733 states have (on average 1.345156889495225) internal successors, (986), 768 states have internal predecessors, (986), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:45:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1014 transitions. [2023-12-02 17:45:48,187 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1014 transitions. Word has length 57 [2023-12-02 17:45:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:45:48,188 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1014 transitions. [2023-12-02 17:45:48,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:45:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1014 transitions. [2023-12-02 17:45:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 17:45:48,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:45:48,188 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:45:48,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-02 17:45:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:45:48,389 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:45:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:45:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash 25984642, now seen corresponding path program 1 times [2023-12-02 17:45:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:45:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849232065] [2023-12-02 17:45:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:45:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:45:48,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:45:48,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139843716] [2023-12-02 17:45:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:45:48,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:45:48,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:45:48,397 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:45:48,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 17:45:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:45:48,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:45:48,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:45:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:45:49,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:45:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:45:49,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:45:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849232065] [2023-12-02 17:45:49,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:45:49,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139843716] [2023-12-02 17:45:49,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139843716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:45:49,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291441265] [2023-12-02 17:45:49,680 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:45:49,680 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:45:49,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:45:49,681 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:45:49,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:45:53,463 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:45:53,518 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:46:31,681 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35878#(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_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 1 ~counter~0) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= |ULTIMATE.start_main_~xy~0#1| (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:46:31,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:46:31,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:46:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 17:46:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293130207] [2023-12-02 17:46:31,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:46:31,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:46:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:46:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:46:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1681, Unknown=5, NotChecked=0, Total=1980 [2023-12-02 17:46:31,684 INFO L87 Difference]: Start difference. First operand 790 states and 1014 transitions. Second operand has 14 states, 13 states have (on average 8.23076923076923) internal successors, (107), 14 states have internal predecessors, (107), 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 17:46:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:46:36,023 INFO L93 Difference]: Finished difference Result 890 states and 1101 transitions. [2023-12-02 17:46:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 17:46:36,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.23076923076923) internal successors, (107), 14 states have internal predecessors, (107), 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 58 [2023-12-02 17:46:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:46:36,029 INFO L225 Difference]: With dead ends: 890 [2023-12-02 17:46:36,030 INFO L226 Difference]: Without dead ends: 888 [2023-12-02 17:46:36,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=433, Invalid=3102, Unknown=5, NotChecked=0, Total=3540 [2023-12-02 17:46:36,031 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 441 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:46:36,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 581 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 17:46:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-02 17:46:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 800. [2023-12-02 17:46:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 743 states have (on average 1.339165545087483) internal successors, (995), 778 states have internal predecessors, (995), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:46:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1023 transitions. [2023-12-02 17:46:36,070 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1023 transitions. Word has length 58 [2023-12-02 17:46:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:46:36,070 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1023 transitions. [2023-12-02 17:46:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.23076923076923) internal successors, (107), 14 states have internal predecessors, (107), 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 17:46:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1023 transitions. [2023-12-02 17:46:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 17:46:36,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:46:36,071 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 17:46:36,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 17:46:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-02 17:46:36,271 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:46:36,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:46:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -603252450, now seen corresponding path program 1 times [2023-12-02 17:46:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:46:36,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003489029] [2023-12-02 17:46:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:46:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:46:36,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:46:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246657535] [2023-12-02 17:46:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:46:36,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:46:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:46:36,277 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:46:36,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 17:46:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:46:36,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:46:36,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:46:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:46:36,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:46:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:46:37,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:46:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003489029] [2023-12-02 17:46:37,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:46:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246657535] [2023-12-02 17:46:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246657535] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:46:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419075404] [2023-12-02 17:46:37,154 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:46:37,154 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:46:37,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:46:37,154 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:46:37,154 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:46:40,529 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:46:40,666 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:47:13,996 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38071#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= ~counter~0 5) (<= (+ 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|))) (exists ((|v_ULTIMATE.start_main_~xy~0#1_137| Int) (v_~counter~0_106 Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (= ~counter~0 (+ v_~counter~0_106 1)) (= |ULTIMATE.start_main_~y~0#1| 0) (= |v_ULTIMATE.start_main_~xy~0#1_137| 0) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 1 v_~counter~0_106) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~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 17:47:13,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:47:13,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:47:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 17:47:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037352653] [2023-12-02 17:47:13,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:47:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:47:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:47:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:47:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=793, Unknown=2, NotChecked=0, Total=930 [2023-12-02 17:47:13,998 INFO L87 Difference]: Start difference. First operand 800 states and 1023 transitions. Second operand has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 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 17:47:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:47:15,444 INFO L93 Difference]: Finished difference Result 860 states and 1071 transitions. [2023-12-02 17:47:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:47:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 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 59 [2023-12-02 17:47:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:47:15,448 INFO L225 Difference]: With dead ends: 860 [2023-12-02 17:47:15,448 INFO L226 Difference]: Without dead ends: 858 [2023-12-02 17:47:15,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 21 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=176, Invalid=1082, Unknown=2, NotChecked=0, Total=1260 [2023-12-02 17:47:15,449 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 214 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:47:15,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 224 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:47:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-02 17:47:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 820. [2023-12-02 17:47:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 763 states have (on average 1.3342070773263435) internal successors, (1018), 798 states have internal predecessors, (1018), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:47:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1046 transitions. [2023-12-02 17:47:15,490 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1046 transitions. Word has length 59 [2023-12-02 17:47:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:47:15,490 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1046 transitions. [2023-12-02 17:47:15,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 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 17:47:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1046 transitions. [2023-12-02 17:47:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 17:47:15,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:47:15,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:47:15,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 17:47:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:47:15,692 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:47:15,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:47:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 94983328, now seen corresponding path program 1 times [2023-12-02 17:47:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:47:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484263705] [2023-12-02 17:47:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:47:15,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:47:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059836083] [2023-12-02 17:47:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:15,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:47:15,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:47:15,698 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:47:15,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 17:47:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:47:15,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:47:15,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:47:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:47:17,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:47:18,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:47:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484263705] [2023-12-02 17:47:18,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:47:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059836083] [2023-12-02 17:47:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059836083] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:47:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2107492469] [2023-12-02 17:47:18,803 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 17:47:18,803 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:47:18,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:47:18,804 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:47:18,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:47:22,260 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-12-02 17:47:22,396 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:47:59,043 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40163#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= (+ (* 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|))) (exists ((v_~counter~0_112 Int) (|v_ULTIMATE.start_main_~xy~0#1_142| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 1 v_~counter~0_112) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |v_ULTIMATE.start_main_~xy~0#1_142| 0) (= ~counter~0 (+ v_~counter~0_112 1)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~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_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= ~counter~0 5) (<= |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 17:47:59,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:47:59,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:47:59,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 17:47:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446075956] [2023-12-02 17:47:59,043 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:47:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:47:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:47:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:47:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1363, Unknown=1, NotChecked=0, Total=1560 [2023-12-02 17:47:59,044 INFO L87 Difference]: Start difference. First operand 820 states and 1046 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:48:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:48:01,903 INFO L93 Difference]: Finished difference Result 823 states and 1046 transitions. [2023-12-02 17:48:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:48:01,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-12-02 17:48:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:48:01,907 INFO L225 Difference]: With dead ends: 823 [2023-12-02 17:48:01,907 INFO L226 Difference]: Without dead ends: 822 [2023-12-02 17:48:01,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 93 SyntacticMatches, 22 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=244, Invalid=1647, Unknown=1, NotChecked=0, Total=1892 [2023-12-02 17:48:01,908 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 205 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:48:01,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 215 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 17:48:01,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-12-02 17:48:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 820. [2023-12-02 17:48:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 763 states have (on average 1.3328964613368284) internal successors, (1017), 798 states have internal predecessors, (1017), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:48:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1045 transitions. [2023-12-02 17:48:01,950 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1045 transitions. Word has length 61 [2023-12-02 17:48:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:48:01,950 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1045 transitions. [2023-12-02 17:48:01,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:48:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1045 transitions. [2023-12-02 17:48:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 17:48:01,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:48:01,951 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] [2023-12-02 17:48:01,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-02 17:48:02,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:48:02,151 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 17:48:02,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:48:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1382684934, now seen corresponding path program 1 times [2023-12-02 17:48:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:48:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458736138] [2023-12-02 17:48:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:48:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:48:02,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:48:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611515704] [2023-12-02 17:48:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:48:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:48:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:48:02,158 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:48:02,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d569a8-a194-49ca-b1b6-6f5866356fb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 17:48:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:48:02,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:48:02,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:48:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:48:02,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:48:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:48:02,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:48:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458736138] [2023-12-02 17:48:02,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:48:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611515704] [2023-12-02 17:48:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611515704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:48:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [898127418] [2023-12-02 17:48:02,997 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:48:02,997 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:48:02,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:48:02,998 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:48:02,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:48:06,831 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 129 for LOIs [2023-12-02 17:48:06,884 INFO L180 IcfgInterpreter]: Interpretation finished