./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --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_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/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_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/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_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/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 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:31:27,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:31:27,645 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 16:31:27,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:31:27,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:31:27,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:31:27,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:31:27,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:31:27,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:31:27,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:31:27,679 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:31:27,680 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:31:27,680 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:31:27,681 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:31:27,681 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:31:27,682 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:31:27,682 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:31:27,683 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:31:27,683 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:31:27,684 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:31:27,684 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:31:27,687 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:31:27,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:31:27,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:31:27,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:31:27,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:31:27,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:31:27,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:31:27,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:31:27,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:31:27,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:31:27,693 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:31:27,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:31:27,694 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:31:27,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:31:27,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:31:27,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:31:27,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:31:27,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:31:27,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:31:27,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:31:27,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:31:27,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:31:27,696 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:31:27,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:31:27,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:31:27,697 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:31:27,697 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:31:27,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:31:27,697 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_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2023-12-02 16:31:27,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:31:27,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:31:27,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:31:27,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:31:27,944 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:31:27,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2023-12-02 16:31:30,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:31:30,934 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:31:30,934 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2023-12-02 16:31:30,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/data/7468cdfec/18879d2c250e4a3b99f5f11a718693c3/FLAG6d1b4c0c1 [2023-12-02 16:31:30,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/data/7468cdfec/18879d2c250e4a3b99f5f11a718693c3 [2023-12-02 16:31:30,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:31:30,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:31:30,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:31:30,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:31:30,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:31:30,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:31:30" (1/1) ... [2023-12-02 16:31:30,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b97278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:30, skipping insertion in model container [2023-12-02 16:31:30,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:31:30" (1/1) ... [2023-12-02 16:31:30,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:31:31,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:31:31,166 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:31:31,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:31:31,197 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:31:31,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31 WrapperNode [2023-12-02 16:31:31,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:31:31,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:31:31,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:31:31,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:31:31,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,232 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-12-02 16:31:31,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:31:31,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:31:31,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:31:31,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:31:31,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:31:31,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:31:31,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:31:31,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:31:31,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (1/1) ... [2023-12-02 16:31:31,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:31:31,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:31,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:31:31,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:31:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:31:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:31:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:31:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:31:31,382 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:31:31,385 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:31:31,503 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:31:31,551 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:31:31,552 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:31:31,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:31:31 BoogieIcfgContainer [2023-12-02 16:31:31,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:31:31,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:31:31,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:31:31,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:31:31,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:31:30" (1/3) ... [2023-12-02 16:31:31,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0f56f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:31:31, skipping insertion in model container [2023-12-02 16:31:31,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:31:31" (2/3) ... [2023-12-02 16:31:31,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0f56f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:31:31, skipping insertion in model container [2023-12-02 16:31:31,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:31:31" (3/3) ... [2023-12-02 16:31:31,564 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2023-12-02 16:31:31,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:31:31,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 16:31:31,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:31:31,645 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;@3752b46d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:31:31,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 16:31:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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 16:31:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 16:31:31,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:31,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 16:31:31,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:31,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2023-12-02 16:31:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:31,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782310956] [2023-12-02 16:31:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:31,863 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 16:31:31,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782310956] [2023-12-02 16:31:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782310956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:31:31,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:31:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:31:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763000517] [2023-12-02 16:31:31,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:31:31,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:31:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:31:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:31:31,904 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 16:31:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:31,965 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-12-02 16:31:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:31:31,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 16:31:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:31,976 INFO L225 Difference]: With dead ends: 14 [2023-12-02 16:31:31,977 INFO L226 Difference]: Without dead ends: 10 [2023-12-02 16:31:31,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:31:31,983 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:31,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:31:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-02 16:31:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-02 16:31:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 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 16:31:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-12-02 16:31:32,018 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2023-12-02 16:31:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:32,018 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-12-02 16:31:32,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 16:31:32,019 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-12-02 16:31:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:31:32,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:32,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:31:32,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:31:32,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:32,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2023-12-02 16:31:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:32,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653004566] [2023-12-02 16:31:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:32,072 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 16:31:32,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653004566] [2023-12-02 16:31:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653004566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:31:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:31:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:31:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666748182] [2023-12-02 16:31:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:31:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:31:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:31:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:31:32,077 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 16:31:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:32,102 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 16:31:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:31:32,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 16:31:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:32,103 INFO L225 Difference]: With dead ends: 14 [2023-12-02 16:31:32,103 INFO L226 Difference]: Without dead ends: 13 [2023-12-02 16:31:32,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:31:32,106 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:32,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:31:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-02 16:31:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-02 16:31:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 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 16:31:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-12-02 16:31:32,111 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2023-12-02 16:31:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:32,111 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-12-02 16:31:32,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 16:31:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-12-02 16:31:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:31:32,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:32,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:31:32,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:31:32,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:32,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:32,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2023-12-02 16:31:32,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:32,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30347744] [2023-12-02 16:31:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:32,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:32,205 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 16:31:32,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30347744] [2023-12-02 16:31:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30347744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:31:32,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:31:32,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:31:32,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497601253] [2023-12-02 16:31:32,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:31:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:31:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:31:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:31:32,208 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 16:31:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:32,234 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-02 16:31:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:31:32,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2023-12-02 16:31:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:32,235 INFO L225 Difference]: With dead ends: 17 [2023-12-02 16:31:32,235 INFO L226 Difference]: Without dead ends: 16 [2023-12-02 16:31:32,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:31:32,237 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:32,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:31:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-02 16:31:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2023-12-02 16:31:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 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 16:31:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-02 16:31:32,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2023-12-02 16:31:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:32,242 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-02 16:31:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 16:31:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-02 16:31:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:31:32,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:32,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:31:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:31:32,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:32,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2023-12-02 16:31:32,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:32,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195294718] [2023-12-02 16:31:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:32,289 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 16:31:32,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195294718] [2023-12-02 16:31:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195294718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:31:32,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:31:32,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:31:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113233287] [2023-12-02 16:31:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:31:32,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:31:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:31:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:31:32,292 INFO L87 Difference]: Start difference. First operand 14 states and 14 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 16:31:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:32,311 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 16:31:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:31:32,312 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 16:31:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:32,313 INFO L225 Difference]: With dead ends: 14 [2023-12-02 16:31:32,313 INFO L226 Difference]: Without dead ends: 13 [2023-12-02 16:31:32,313 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 16:31:32,315 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:32,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:31:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-02 16:31:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-02 16:31:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 16:31:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-12-02 16:31:32,319 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2023-12-02 16:31:32,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:32,319 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-12-02 16:31:32,320 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 16:31:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-12-02 16:31:32,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 16:31:32,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:32,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 16:31:32,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:31:32,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:32,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash -509927273, now seen corresponding path program 1 times [2023-12-02 16:31:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119631338] [2023-12-02 16:31:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:32,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119631338] [2023-12-02 16:31:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119631338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:31:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973689544] [2023-12-02 16:31:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:32,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:32,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:32,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:31:32,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:31:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:32,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:31:32,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:31:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:32,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:31:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973689544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:31:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [153561451] [2023-12-02 16:31:32,564 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:31:32,565 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:31:32,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:31:32,573 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:31:32,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:31:33,131 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:31:33,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '227#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-12-02 16:31:33,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:31:33,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:31:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-12-02 16:31:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634314950] [2023-12-02 16:31:33,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:31:33,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:31:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:33,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:31:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:31:33,399 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 16:31:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:33,479 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-12-02 16:31:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:31:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 10 [2023-12-02 16:31:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:33,480 INFO L225 Difference]: With dead ends: 30 [2023-12-02 16:31:33,480 INFO L226 Difference]: Without dead ends: 29 [2023-12-02 16:31:33,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:31:33,482 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:33,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:31:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-02 16:31:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-12-02 16:31:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 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 16:31:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2023-12-02 16:31:33,487 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2023-12-02 16:31:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:33,488 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2023-12-02 16:31:33,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 16:31:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2023-12-02 16:31:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:31:33,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:33,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 16:31:33,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:31:33,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:33,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:33,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1372123773, now seen corresponding path program 1 times [2023-12-02 16:31:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:33,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711811399] [2023-12-02 16:31:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:33,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:33,753 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 16:31:33,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711811399] [2023-12-02 16:31:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711811399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:31:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639457705] [2023-12-02 16:31:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:33,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:33,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:33,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:31:33,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:31:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:33,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:31:33,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:31:33,877 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 16:31:33,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:31:34,016 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 16:31:34,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639457705] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:31:34,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879928732] [2023-12-02 16:31:34,018 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:31:34,019 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:31:34,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:31:34,019 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:31:34,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:31:34,237 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:31:34,542 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '385#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-12-02 16:31:34,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:31:34,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:31:34,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-12-02 16:31:34,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123590424] [2023-12-02 16:31:34,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:31:34,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 16:31:34,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 16:31:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:31:34,545 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 16:31:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:34,820 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-12-02 16:31:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:31:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 11 [2023-12-02 16:31:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:34,822 INFO L225 Difference]: With dead ends: 36 [2023-12-02 16:31:34,822 INFO L226 Difference]: Without dead ends: 35 [2023-12-02 16:31:34,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 16:31:34,824 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:34,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:31:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-02 16:31:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-12-02 16:31:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 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 16:31:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-12-02 16:31:34,830 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 11 [2023-12-02 16:31:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:34,830 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-12-02 16:31:34,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 16:31:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-12-02 16:31:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:31:34,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:34,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2023-12-02 16:31:34,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:31:35,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:31:35,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:35,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1209149769, now seen corresponding path program 2 times [2023-12-02 16:31:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468125459] [2023-12-02 16:31:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:35,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:35,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468125459] [2023-12-02 16:31:35,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468125459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:31:35,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487383373] [2023-12-02 16:31:35,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:31:35,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:35,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:35,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:31:35,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:31:35,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 16:31:35,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:31:35,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:31:35,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:31:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 16:31:35,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:31:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 16:31:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487383373] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:31:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2036412151] [2023-12-02 16:31:35,357 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:31:35,358 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:31:35,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:31:35,358 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:31:35,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:31:35,539 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:31:35,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '652#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-12-02 16:31:35,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:31:35,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:31:35,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-12-02 16:31:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255375607] [2023-12-02 16:31:35,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:31:35,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:31:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:31:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-12-02 16:31:35,812 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 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 16:31:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:36,014 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-12-02 16:31:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:31:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 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 16:31:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:36,015 INFO L225 Difference]: With dead ends: 33 [2023-12-02 16:31:36,015 INFO L226 Difference]: Without dead ends: 32 [2023-12-02 16:31:36,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 16:31:36,016 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 48 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:36,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:31:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-02 16:31:36,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-02 16:31:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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 16:31:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2023-12-02 16:31:36,022 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2023-12-02 16:31:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:36,023 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2023-12-02 16:31:36,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 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 16:31:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2023-12-02 16:31:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 16:31:36,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:36,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1] [2023-12-02 16:31:36,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 16:31:36,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:36,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:36,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -199996803, now seen corresponding path program 2 times [2023-12-02 16:31:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:36,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845436522] [2023-12-02 16:31:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:36,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:36,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845436522] [2023-12-02 16:31:36,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845436522] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:31:36,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129666145] [2023-12-02 16:31:36,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:31:36,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:36,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:36,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:31:36,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:31:36,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:31:36,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:31:36,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:31:36,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:31:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:36,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:31:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129666145] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:31:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1744656485] [2023-12-02 16:31:37,690 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:31:37,690 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:31:37,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:31:37,690 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:31:37,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:31:37,906 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:31:38,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '989#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-12-02 16:31:38,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:31:38,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:31:38,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 47 [2023-12-02 16:31:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980379816] [2023-12-02 16:31:38,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:31:38,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-02 16:31:38,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:38,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-02 16:31:38,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=2630, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 16:31:38,346 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 48 states have internal predecessors, (89), 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 16:31:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:40,190 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2023-12-02 16:31:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 16:31:40,190 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 48 states have internal predecessors, (89), 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 31 [2023-12-02 16:31:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:40,191 INFO L225 Difference]: With dead ends: 94 [2023-12-02 16:31:40,191 INFO L226 Difference]: Without dead ends: 93 [2023-12-02 16:31:40,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1534, Invalid=7022, Unknown=0, NotChecked=0, Total=8556 [2023-12-02 16:31:40,195 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 159 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:40,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 48 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:31:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-02 16:31:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2023-12-02 16:31:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 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 16:31:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2023-12-02 16:31:40,208 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 31 [2023-12-02 16:31:40,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:40,208 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2023-12-02 16:31:40,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 48 states have internal predecessors, (89), 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 16:31:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2023-12-02 16:31:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 16:31:40,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:40,212 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1] [2023-12-02 16:31:40,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 16:31:40,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 16:31:40,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:31:40,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2018398845, now seen corresponding path program 3 times [2023-12-02 16:31:40,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:40,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468439867] [2023-12-02 16:31:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:40,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:41,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:41,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468439867] [2023-12-02 16:31:41,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468439867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:31:41,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835957765] [2023-12-02 16:31:41,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:31:41,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:41,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:31:41,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:31:41,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:31:41,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:31:41,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-02 16:31:41,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:31:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:43,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:31:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:31:48,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835957765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:31:48,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [835300023] [2023-12-02 16:31:48,438 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:31:48,438 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:31:48,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:31:48,438 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:31:48,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:31:48,590 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:31:49,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1978#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-12-02 16:31:49,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:31:49,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:31:49,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 55, 55] total 143 [2023-12-02 16:31:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614497542] [2023-12-02 16:31:49,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:31:49,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2023-12-02 16:31:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2023-12-02 16:31:49,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2488, Invalid=20162, Unknown=0, NotChecked=0, Total=22650 [2023-12-02 16:31:49,540 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 144 states, 143 states have (on average 1.881118881118881) internal successors, (269), 144 states have internal predecessors, (269), 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 16:32:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:09,745 INFO L93 Difference]: Finished difference Result 274 states and 309 transitions. [2023-12-02 16:32:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-12-02 16:32:09,745 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 1.881118881118881) internal successors, (269), 144 states have internal predecessors, (269), 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 91 [2023-12-02 16:32:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:09,748 INFO L225 Difference]: With dead ends: 274 [2023-12-02 16:32:09,748 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 16:32:09,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14709 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=13540, Invalid=60716, Unknown=0, NotChecked=0, Total=74256 [2023-12-02 16:32:09,758 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1074 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 5258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:09,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 112 Invalid, 5258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4930 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 16:32:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 16:32:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2023-12-02 16:32:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.003690036900369) internal successors, (272), 271 states have internal predecessors, (272), 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 16:32:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2023-12-02 16:32:09,788 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 91 [2023-12-02 16:32:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:09,789 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2023-12-02 16:32:09,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 1.881118881118881) internal successors, (269), 144 states have internal predecessors, (269), 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 16:32:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2023-12-02 16:32:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-02 16:32:09,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:09,796 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1] [2023-12-02 16:32:09,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:32:09,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 16:32:09,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:32:09,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:09,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1226074749, now seen corresponding path program 4 times [2023-12-02 16:32:09,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:09,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142024077] [2023-12-02 16:32:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:09,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:32:16,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:32:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142024077] [2023-12-02 16:32:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142024077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:32:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569494730] [2023-12-02 16:32:16,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 16:32:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:32:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:32:16,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:32:16,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:32:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:16,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 217 conjunts are in the unsatisfiable core [2023-12-02 16:32:16,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:32:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:32:34,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:33:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:33:15,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569494730] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:33:15,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1551559606] [2023-12-02 16:33:15,609 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 16:33:15,609 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:33:15,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:33:15,610 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:33:15,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:33:15,745 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:33:18,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4935#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-12-02 16:33:18,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:33:18,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:33:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 163, 163] total 431 [2023-12-02 16:33:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570149227] [2023-12-02 16:33:18,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:33:18,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 432 states [2023-12-02 16:33:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:33:18,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 432 interpolants. [2023-12-02 16:33:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21028, Invalid=171254, Unknown=0, NotChecked=0, Total=192282 [2023-12-02 16:33:18,618 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand has 432 states, 431 states have (on average 1.877030162412993) internal successors, (809), 432 states have internal predecessors, (809), 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 16:39:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:03,741 INFO L93 Difference]: Finished difference Result 814 states and 921 transitions. [2023-12-02 16:39:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 432 states. [2023-12-02 16:39:03,742 INFO L78 Accepts]: Start accepts. Automaton has has 432 states, 431 states have (on average 1.877030162412993) internal successors, (809), 432 states have internal predecessors, (809), 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 271 [2023-12-02 16:39:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:03,748 INFO L225 Difference]: With dead ends: 814 [2023-12-02 16:39:03,748 INFO L226 Difference]: Without dead ends: 813 [2023-12-02 16:39:03,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1294 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 811 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134499 ImplicationChecksByTransitivity, 384.3s TimeCoverageRelationStatistics Valid=121270, Invalid=538886, Unknown=0, NotChecked=0, Total=660156 [2023-12-02 16:39:03,806 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6166 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 44447 mSolverCounterSat, 1645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6166 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 46092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1645 IncrementalHoareTripleChecker+Valid, 44447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:03,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6166 Valid, 341 Invalid, 46092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1645 Valid, 44447 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2023-12-02 16:39:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-12-02 16:39:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 812. [2023-12-02 16:39:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 1.0012330456226881) internal successors, (812), 811 states have internal predecessors, (812), 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 16:39:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 812 transitions. [2023-12-02 16:39:03,912 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 812 transitions. Word has length 271 [2023-12-02 16:39:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:03,913 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 812 transitions. [2023-12-02 16:39:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 432 states, 431 states have (on average 1.877030162412993) internal successors, (809), 432 states have internal predecessors, (809), 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 16:39:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 812 transitions. [2023-12-02 16:39:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2023-12-02 16:39:03,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:03,941 INFO L195 NwaCegarLoop]: trace histogram [162, 162, 162, 161, 161, 1, 1, 1] [2023-12-02 16:39:03,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 16:39:04,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:39:04,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 16:39:04,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash -197217667, now seen corresponding path program 5 times [2023-12-02 16:39:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:04,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650264449] [2023-12-02 16:39:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:40:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 65044 backedges. 0 proven. 65044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:40:03,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:40:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650264449] [2023-12-02 16:40:03,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650264449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:40:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125308647] [2023-12-02 16:40:03,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:40:03,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:40:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:40:03,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:40:03,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e14daf9-b17a-4f4c-b1f4-02c5b25f3544/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:40:04,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 162 check-sat command(s) [2023-12-02 16:40:04,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:40:04,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 2293 conjuncts, 649 conjunts are in the unsatisfiable core [2023-12-02 16:40:04,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 65044 backedges. 0 proven. 65044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:43,354 INFO L327 TraceCheckSpWp]: Computing backward predicates...