./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/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_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/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_da324df4-9418-4bd0-932d-71ef8e836b22/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 e66935135411fbf96808f67125d08daf2aa12325c87064d554338ba4e7860b02 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:34:19,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:34:19,274 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 14:34:19,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:34:19,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:34:19,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:34:19,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:34:19,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:34:19,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:34:19,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:34:19,308 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:34:19,308 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:34:19,309 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:34:19,309 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:34:19,310 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:34:19,310 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:34:19,311 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:34:19,311 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:34:19,312 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:34:19,312 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:34:19,313 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:34:19,313 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:34:19,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:34:19,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:34:19,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:34:19,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:34:19,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:34:19,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:34:19,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:34:19,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:34:19,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:34:19,318 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:34:19,318 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:34:19,318 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:34:19,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:34:19,319 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:34:19,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:34:19,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:34:19,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:34:19,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:34:19,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:34:19,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:34:19,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:34:19,321 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:34:19,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:34:19,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:34:19,322 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:34:19,322 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:34:19,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:34:19,322 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_da324df4-9418-4bd0-932d-71ef8e836b22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66935135411fbf96808f67125d08daf2aa12325c87064d554338ba4e7860b02 [2023-12-02 14:34:19,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:34:19,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:34:19,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:34:19,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:34:19,575 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:34:19,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c [2023-12-02 14:34:22,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:34:22,569 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:34:22,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c [2023-12-02 14:34:22,577 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/data/364966126/d6d7ebf6d4694fc7b71bd3a7fca47431/FLAG3a61577c7 [2023-12-02 14:34:22,589 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/data/364966126/d6d7ebf6d4694fc7b71bd3a7fca47431 [2023-12-02 14:34:22,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:34:22,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:34:22,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:34:22,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:34:22,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:34:22,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fefe4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22, skipping insertion in model container [2023-12-02 14:34:22,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:34:22,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:34:22,772 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:34:22,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:34:22,805 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:34:22,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22 WrapperNode [2023-12-02 14:34:22,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:34:22,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:34:22,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:34:22,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:34:22,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,851 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 135 [2023-12-02 14:34:22,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:34:22,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:34:22,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:34:22,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:34:22,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:34:22,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:34:22,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:34:22,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:34:22,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (1/1) ... [2023-12-02 14:34:22,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:34:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:22,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:34:22,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:34:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:34:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:34:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:34:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:34:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:34:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:34:23,021 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:34:23,023 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:34:23,490 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:34:23,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:34:23,528 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:34:23,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:23 BoogieIcfgContainer [2023-12-02 14:34:23,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:34:23,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:34:23,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:34:23,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:34:23,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:34:22" (1/3) ... [2023-12-02 14:34:23,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a73e581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:23, skipping insertion in model container [2023-12-02 14:34:23,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:22" (2/3) ... [2023-12-02 14:34:23,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a73e581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:23, skipping insertion in model container [2023-12-02 14:34:23,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:23" (3/3) ... [2023-12-02 14:34:23,571 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound5.c [2023-12-02 14:34:23,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:34:23,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2023-12-02 14:34:23,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:34:23,654 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;@5f70388, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:34:23,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-12-02 14:34:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 92 states have (on average 1.9673913043478262) internal successors, (181), 178 states have internal predecessors, (181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:34:23,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:23,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:34:23,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 259564, now seen corresponding path program 1 times [2023-12-02 14:34:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:23,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600553112] [2023-12-02 14:34:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:23,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:23,787 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 14:34:23,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:23,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600553112] [2023-12-02 14:34:23,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600553112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:23,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:23,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51276320] [2023-12-02 14:34:23,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:23,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:34:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:34:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:34:23,823 INFO L87 Difference]: Start difference. First operand has 183 states, 92 states have (on average 1.9673913043478262) internal successors, (181), 178 states have internal predecessors, (181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:34:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:23,862 INFO L93 Difference]: Finished difference Result 259 states and 269 transitions. [2023-12-02 14:34:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:34:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:34:23,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:23,873 INFO L225 Difference]: With dead ends: 259 [2023-12-02 14:34:23,873 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 14:34:23,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:34:23,880 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:23,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:34:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 14:34:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-02 14:34:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 163 states have internal predecessors, (165), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:34:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2023-12-02 14:34:23,924 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 3 [2023-12-02 14:34:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:23,924 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2023-12-02 14:34:23,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:34:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2023-12-02 14:34:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:34:23,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:23,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:34:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:34:23,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:23,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash 256075, now seen corresponding path program 1 times [2023-12-02 14:34:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:23,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111056681] [2023-12-02 14:34:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:23,991 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 14:34:23,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:23,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111056681] [2023-12-02 14:34:23,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111056681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:23,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:23,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864745129] [2023-12-02 14:34:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:23,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:34:23,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:34:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:23,997 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:34:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:24,048 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2023-12-02 14:34:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:34:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 14:34:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:24,051 INFO L225 Difference]: With dead ends: 167 [2023-12-02 14:34:24,051 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 14:34:24,052 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 14:34:24,053 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 169 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:24,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 320 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:34:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 14:34:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-12-02 14:34:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 91 states have (on average 1.8021978021978022) internal successors, (164), 162 states have internal predecessors, (164), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:34:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2023-12-02 14:34:24,069 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 3 [2023-12-02 14:34:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:24,070 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2023-12-02 14:34:24,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:34:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2023-12-02 14:34:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 14:34:24,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:24,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 14:34:24,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:34:24,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:24,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:24,072 INFO L85 PathProgramCache]: Analyzing trace with hash 7938373, now seen corresponding path program 1 times [2023-12-02 14:34:24,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:24,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938184070] [2023-12-02 14:34:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:24,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:24,116 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 14:34:24,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938184070] [2023-12-02 14:34:24,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938184070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:24,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735534666] [2023-12-02 14:34:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:34:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:34:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:24,119 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 14:34:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:24,159 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2023-12-02 14:34:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:34:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 14:34:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:24,162 INFO L225 Difference]: With dead ends: 244 [2023-12-02 14:34:24,162 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 14:34:24,163 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 14:34:24,164 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 3 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:24,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 485 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:34:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 14:34:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-02 14:34:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 95 states have (on average 1.768421052631579) internal successors, (168), 166 states have internal predecessors, (168), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:34:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2023-12-02 14:34:24,176 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 4 [2023-12-02 14:34:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:24,177 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2023-12-02 14:34:24,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 14:34:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2023-12-02 14:34:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 14:34:24,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:24,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 14:34:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:34:24,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:24,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -961156441, now seen corresponding path program 1 times [2023-12-02 14:34:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814994141] [2023-12-02 14:34:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:24,222 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 14:34:24,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:24,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814994141] [2023-12-02 14:34:24,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814994141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:24,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:24,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:34:24,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060461406] [2023-12-02 14:34:24,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:24,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:34:24,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:24,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:34:24,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:24,225 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:34:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:24,648 INFO L93 Difference]: Finished difference Result 314 states and 318 transitions. [2023-12-02 14:34:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:34:24,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:34:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:24,650 INFO L225 Difference]: With dead ends: 314 [2023-12-02 14:34:24,650 INFO L226 Difference]: Without dead ends: 258 [2023-12-02 14:34:24,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:24,653 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 90 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:24,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 113 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:34:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-02 14:34:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 244. [2023-12-02 14:34:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.5178571428571428) internal successors, (255), 239 states have internal predecessors, (255), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 261 transitions. [2023-12-02 14:34:24,670 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 261 transitions. Word has length 6 [2023-12-02 14:34:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:24,670 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 261 transitions. [2023-12-02 14:34:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:34:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 261 transitions. [2023-12-02 14:34:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 14:34:24,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:24,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:34:24,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:24,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash 108240387, now seen corresponding path program 1 times [2023-12-02 14:34:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:24,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735654407] [2023-12-02 14:34:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:24,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:24,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139019277] [2023-12-02 14:34:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:24,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:24,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:24,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:34:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:24,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:34:24,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:24,805 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 14:34:24,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:24,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:24,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735654407] [2023-12-02 14:34:24,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:24,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139019277] [2023-12-02 14:34:24,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139019277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:24,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:24,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:34:24,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549230528] [2023-12-02 14:34:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:24,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:34:24,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:24,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:34:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:24,809 INFO L87 Difference]: Start difference. First operand 244 states and 261 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 2 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 14:34:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:24,859 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2023-12-02 14:34:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:34:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 2 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) Word has length 34 [2023-12-02 14:34:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:24,861 INFO L225 Difference]: With dead ends: 244 [2023-12-02 14:34:24,861 INFO L226 Difference]: Without dead ends: 241 [2023-12-02 14:34:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:24,863 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 126 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 140 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:34:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-02 14:34:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-12-02 14:34:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.4880952380952381) internal successors, (250), 236 states have internal predecessors, (250), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 256 transitions. [2023-12-02 14:34:24,875 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 256 transitions. Word has length 34 [2023-12-02 14:34:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:24,875 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 256 transitions. [2023-12-02 14:34:24,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 2 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 14:34:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 256 transitions. [2023-12-02 14:34:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 14:34:24,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:24,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:24,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:34:25,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:25,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:25,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -939515186, now seen corresponding path program 1 times [2023-12-02 14:34:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183139467] [2023-12-02 14:34:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:25,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:25,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:25,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983588261] [2023-12-02 14:34:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:25,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:25,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:25,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:34:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:25,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:34:25,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:25,208 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 14:34:25,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:25,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:25,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183139467] [2023-12-02 14:34:25,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983588261] [2023-12-02 14:34:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983588261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:25,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:25,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:34:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987423294] [2023-12-02 14:34:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:25,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:34:25,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:34:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:25,211 INFO L87 Difference]: Start difference. First operand 241 states and 256 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 2 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 14:34:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:25,305 INFO L93 Difference]: Finished difference Result 266 states and 269 transitions. [2023-12-02 14:34:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:34:25,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 2 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 35 [2023-12-02 14:34:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:25,307 INFO L225 Difference]: With dead ends: 266 [2023-12-02 14:34:25,308 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 14:34:25,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:25,309 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 66 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:25,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 279 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:34:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 14:34:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 241. [2023-12-02 14:34:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.4761904761904763) internal successors, (248), 236 states have internal predecessors, (248), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 254 transitions. [2023-12-02 14:34:25,320 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 254 transitions. Word has length 35 [2023-12-02 14:34:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:25,320 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 254 transitions. [2023-12-02 14:34:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 2 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 14:34:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 254 transitions. [2023-12-02 14:34:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 14:34:25,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:25,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:25,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:34:25,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:25,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:25,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash 939800421, now seen corresponding path program 1 times [2023-12-02 14:34:25,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:25,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552698129] [2023-12-02 14:34:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:25,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:25,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959403189] [2023-12-02 14:34:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:25,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:25,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:25,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:34:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:25,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:34:25,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:25,680 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 14:34:25,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:25,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:25,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552698129] [2023-12-02 14:34:25,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:25,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959403189] [2023-12-02 14:34:25,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959403189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:25,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:25,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:25,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210351115] [2023-12-02 14:34:25,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:34:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:34:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:25,683 INFO L87 Difference]: Start difference. First operand 241 states and 254 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 14:34:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:26,094 INFO L93 Difference]: Finished difference Result 264 states and 267 transitions. [2023-12-02 14:34:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:34:26,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-02 14:34:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:26,096 INFO L225 Difference]: With dead ends: 264 [2023-12-02 14:34:26,096 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 14:34:26,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:26,097 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 89 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:26,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 232 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:34:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 14:34:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 244. [2023-12-02 14:34:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 171 states have (on average 1.4502923976608186) internal successors, (248), 239 states have internal predecessors, (248), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 254 transitions. [2023-12-02 14:34:26,106 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 254 transitions. Word has length 36 [2023-12-02 14:34:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:26,106 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 254 transitions. [2023-12-02 14:34:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 14:34:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 254 transitions. [2023-12-02 14:34:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 14:34:26,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:26,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:26,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:34:26,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:26,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:26,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash -930957904, now seen corresponding path program 1 times [2023-12-02 14:34:26,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:26,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437090076] [2023-12-02 14:34:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:26,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:26,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:26,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075326725] [2023-12-02 14:34:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:26,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:26,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:34:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:26,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:34:26,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:26,458 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 14:34:26,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:26,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437090076] [2023-12-02 14:34:26,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075326725] [2023-12-02 14:34:26,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075326725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:26,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353008380] [2023-12-02 14:34:26,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:26,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:34:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:34:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:26,461 INFO L87 Difference]: Start difference. First operand 244 states and 254 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 14:34:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:26,771 INFO L93 Difference]: Finished difference Result 259 states and 272 transitions. [2023-12-02 14:34:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:34:26,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2023-12-02 14:34:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:26,775 INFO L225 Difference]: With dead ends: 259 [2023-12-02 14:34:26,775 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 14:34:26,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:26,777 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 141 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:26,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 52 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:34:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 14:34:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2023-12-02 14:34:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 147 states have (on average 1.4149659863945578) internal successors, (208), 198 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 214 transitions. [2023-12-02 14:34:26,786 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 214 transitions. Word has length 37 [2023-12-02 14:34:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:26,786 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 214 transitions. [2023-12-02 14:34:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 14:34:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 214 transitions. [2023-12-02 14:34:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 14:34:26,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:26,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:26,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:34:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:26,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:26,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 343286461, now seen corresponding path program 1 times [2023-12-02 14:34:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:26,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313392970] [2023-12-02 14:34:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:27,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:27,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512597920] [2023-12-02 14:34:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:27,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:27,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:27,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:27,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:34:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:27,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:34:27,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:27,133 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 14:34:27,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:27,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313392970] [2023-12-02 14:34:27,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512597920] [2023-12-02 14:34:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512597920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:27,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:27,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:27,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154131525] [2023-12-02 14:34:27,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:34:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:34:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:27,136 INFO L87 Difference]: Start difference. First operand 203 states and 214 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:27,152 INFO L93 Difference]: Finished difference Result 203 states and 214 transitions. [2023-12-02 14:34:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:34:27,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-12-02 14:34:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:27,154 INFO L225 Difference]: With dead ends: 203 [2023-12-02 14:34:27,154 INFO L226 Difference]: Without dead ends: 202 [2023-12-02 14:34:27,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:27,155 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 101 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:27,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 142 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:34:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-02 14:34:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-12-02 14:34:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 147 states have (on average 1.401360544217687) internal successors, (206), 197 states have internal predecessors, (206), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 212 transitions. [2023-12-02 14:34:27,165 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 212 transitions. Word has length 44 [2023-12-02 14:34:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:27,166 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 212 transitions. [2023-12-02 14:34:27,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 212 transitions. [2023-12-02 14:34:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 14:34:27,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:27,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:27,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 14:34:27,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:27,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:27,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2051945830, now seen corresponding path program 1 times [2023-12-02 14:34:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946097435] [2023-12-02 14:34:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:27,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:27,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625955100] [2023-12-02 14:34:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:27,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:27,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:34:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:27,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:34:27,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:27,502 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 14:34:27,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:27,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946097435] [2023-12-02 14:34:27,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625955100] [2023-12-02 14:34:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625955100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:34:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257777278] [2023-12-02 14:34:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:27,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:34:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:27,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:34:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:27,504 INFO L87 Difference]: Start difference. First operand 202 states and 212 transitions. Second operand has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:27,522 INFO L93 Difference]: Finished difference Result 203 states and 212 transitions. [2023-12-02 14:34:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:34:27,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-12-02 14:34:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:27,524 INFO L225 Difference]: With dead ends: 203 [2023-12-02 14:34:27,524 INFO L226 Difference]: Without dead ends: 202 [2023-12-02 14:34:27,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:34:27,525 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:27,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:34:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-02 14:34:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-12-02 14:34:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 147 states have (on average 1.3945578231292517) internal successors, (205), 197 states have internal predecessors, (205), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:34:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 211 transitions. [2023-12-02 14:34:27,534 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 211 transitions. Word has length 45 [2023-12-02 14:34:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:27,535 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 211 transitions. [2023-12-02 14:34:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 211 transitions. [2023-12-02 14:34:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 14:34:27,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:27,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:27,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:34:27,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:27,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:27,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1811442774, now seen corresponding path program 1 times [2023-12-02 14:34:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:27,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843384881] [2023-12-02 14:34:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:27,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:27,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777678764] [2023-12-02 14:34:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:27,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:27,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:27,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:27,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:34:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:27,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:34:27,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:27,865 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 14:34:27,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:27,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843384881] [2023-12-02 14:34:27,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777678764] [2023-12-02 14:34:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777678764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:27,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:27,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:34:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926320497] [2023-12-02 14:34:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:27,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:34:27,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:34:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:27,868 INFO L87 Difference]: Start difference. First operand 202 states and 211 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:28,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:28,207 INFO L93 Difference]: Finished difference Result 350 states and 366 transitions. [2023-12-02 14:34:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:34:28,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-12-02 14:34:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:28,209 INFO L225 Difference]: With dead ends: 350 [2023-12-02 14:34:28,209 INFO L226 Difference]: Without dead ends: 309 [2023-12-02 14:34:28,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:28,210 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 99 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:28,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 113 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:34:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-02 14:34:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 287. [2023-12-02 14:34:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 230 states have (on average 1.3) internal successors, (299), 280 states have internal predecessors, (299), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:34:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 309 transitions. [2023-12-02 14:34:28,220 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 309 transitions. Word has length 49 [2023-12-02 14:34:28,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:28,220 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 309 transitions. [2023-12-02 14:34:28,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 309 transitions. [2023-12-02 14:34:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 14:34:28,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:28,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:28,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:34:28,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:28,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:28,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:28,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2140192496, now seen corresponding path program 1 times [2023-12-02 14:34:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:28,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017018398] [2023-12-02 14:34:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:28,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:28,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:28,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435511831] [2023-12-02 14:34:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:28,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:28,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:28,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:34:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:28,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:34:28,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:28,565 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 14:34:28,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:28,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:28,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017018398] [2023-12-02 14:34:28,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:28,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435511831] [2023-12-02 14:34:28,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435511831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:34:28,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:34:28,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664127274] [2023-12-02 14:34:28,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:28,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:34:28,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:34:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:28,567 INFO L87 Difference]: Start difference. First operand 287 states and 309 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:28,652 INFO L93 Difference]: Finished difference Result 288 states and 309 transitions. [2023-12-02 14:34:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:34:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-12-02 14:34:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:28,655 INFO L225 Difference]: With dead ends: 288 [2023-12-02 14:34:28,655 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 14:34:28,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:34:28,656 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 42 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:28,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 231 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:34:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 14:34:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-02 14:34:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 230 states have (on average 1.2956521739130435) internal successors, (298), 280 states have internal predecessors, (298), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:34:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 308 transitions. [2023-12-02 14:34:28,668 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 308 transitions. Word has length 55 [2023-12-02 14:34:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:28,669 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 308 transitions. [2023-12-02 14:34:28,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:34:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 308 transitions. [2023-12-02 14:34:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 14:34:28,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:28,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:28,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 14:34:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:28,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:34:28,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash 314904542, now seen corresponding path program 1 times [2023-12-02 14:34:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760606979] [2023-12-02 14:34:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:28,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:34:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897574364] [2023-12-02 14:34:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:28,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:28,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:28,884 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:28,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 14:34:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:28,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:34:28,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:29,031 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 14:34:29,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:34:29,156 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 14:34:29,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760606979] [2023-12-02 14:34:29,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:34:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897574364] [2023-12-02 14:34:29,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897574364] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:34:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517985168] [2023-12-02 14:34:29,177 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 14:34:29,177 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:34:29,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:34:29,187 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:34:29,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:34:33,282 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:34:33,312 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:35:25,970 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7432#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post5#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post5#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 256) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15))) (<= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 307445734561825860)))' at error location [2023-12-02 14:35:25,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:35:25,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:35:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-12-02 14:35:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182866712] [2023-12-02 14:35:25,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:35:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 14:35:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:35:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 14:35:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=797, Unknown=4, NotChecked=0, Total=930 [2023-12-02 14:35:25,972 INFO L87 Difference]: Start difference. First operand 287 states and 308 transitions. Second operand has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:35:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:35:26,199 INFO L93 Difference]: Finished difference Result 515 states and 532 transitions. [2023-12-02 14:35:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:35:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2023-12-02 14:35:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:35:26,202 INFO L225 Difference]: With dead ends: 515 [2023-12-02 14:35:26,202 INFO L226 Difference]: Without dead ends: 470 [2023-12-02 14:35:26,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 112 SyntacticMatches, 31 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=199, Invalid=1203, Unknown=4, NotChecked=0, Total=1406 [2023-12-02 14:35:26,204 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 214 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:35:26,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 901 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:35:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-02 14:35:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 402. [2023-12-02 14:35:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 391 states have internal predecessors, (465), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 14:35:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 479 transitions. [2023-12-02 14:35:26,217 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 479 transitions. Word has length 58 [2023-12-02 14:35:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:35:26,217 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 479 transitions. [2023-12-02 14:35:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:35:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 479 transitions. [2023-12-02 14:35:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 14:35:26,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:35:26,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:35:26,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 14:35:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:35:26,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:35:26,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:35:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1821155605, now seen corresponding path program 1 times [2023-12-02 14:35:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:35:26,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528023012] [2023-12-02 14:35:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:35:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:35:26,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:35:26,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76807539] [2023-12-02 14:35:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:35:26,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:35:26,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:35:26,430 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:35:26,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 14:35:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:35:26,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:35:26,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:35:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:35:26,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:35:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:35:26,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:35:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528023012] [2023-12-02 14:35:26,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:35:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76807539] [2023-12-02 14:35:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76807539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:35:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889021413] [2023-12-02 14:35:26,931 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 14:35:26,931 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:35:26,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:35:26,932 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:35:26,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:35:29,765 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:35:29,792 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:36:14,799 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8954#(and (<= 1 |#StackHeapBarrier|) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1537228672809129301) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 ~counter~0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 307445734561825861 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) (<= |ULTIMATE.start_main_~k~0#1| 256))' at error location [2023-12-02 14:36:14,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:36:14,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:36:14,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 14:36:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566070227] [2023-12-02 14:36:14,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:36:14,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:36:14,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:36:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:36:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=690, Unknown=4, NotChecked=0, Total=812 [2023-12-02 14:36:14,802 INFO L87 Difference]: Start difference. First operand 402 states and 479 transitions. Second operand has 8 states, 7 states have (on average 24.714285714285715) internal successors, (173), 8 states have internal predecessors, (173), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:36:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:36:15,586 INFO L93 Difference]: Finished difference Result 470 states and 509 transitions. [2023-12-02 14:36:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:36:15,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.714285714285715) internal successors, (173), 8 states have internal predecessors, (173), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 89 [2023-12-02 14:36:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:36:15,591 INFO L225 Difference]: With dead ends: 470 [2023-12-02 14:36:15,591 INFO L226 Difference]: Without dead ends: 467 [2023-12-02 14:36:15,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 185 SyntacticMatches, 53 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=134, Invalid=792, Unknown=4, NotChecked=0, Total=930 [2023-12-02 14:36:15,592 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 300 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:36:15,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 317 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 14:36:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-02 14:36:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 422. [2023-12-02 14:36:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 360 states have (on average 1.3583333333333334) internal successors, (489), 411 states have internal predecessors, (489), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 14:36:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 503 transitions. [2023-12-02 14:36:15,605 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 503 transitions. Word has length 89 [2023-12-02 14:36:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:36:15,605 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 503 transitions. [2023-12-02 14:36:15,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.714285714285715) internal successors, (173), 8 states have internal predecessors, (173), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:36:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 503 transitions. [2023-12-02 14:36:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 14:36:15,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:36:15,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:36:15,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 14:36:15,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 14:36:15,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:36:15,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:36:15,812 INFO L85 PathProgramCache]: Analyzing trace with hash 621249022, now seen corresponding path program 1 times [2023-12-02 14:36:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:36:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223901894] [2023-12-02 14:36:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:36:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:36:15,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:36:15,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602170281] [2023-12-02 14:36:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:36:15,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:36:15,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:36:15,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:36:15,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 14:36:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:36:15,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:36:15,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:36:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:36:16,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:36:16,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:36:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223901894] [2023-12-02 14:36:16,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:36:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602170281] [2023-12-02 14:36:16,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602170281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:36:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [860778405] [2023-12-02 14:36:16,863 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 14:36:16,863 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:36:16,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:36:16,864 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:36:16,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:36:19,700 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:36:19,743 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:37:06,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [860778405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:37:06,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:37:06,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 25 [2023-12-02 14:37:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420611708] [2023-12-02 14:37:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:37:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 14:37:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:37:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 14:37:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=685, Unknown=4, NotChecked=0, Total=870 [2023-12-02 14:37:06,073 INFO L87 Difference]: Start difference. First operand 422 states and 503 transitions. Second operand has 22 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:37:11,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 14:37:16,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:37:18,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:37:22,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 14:37:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:37:23,110 INFO L93 Difference]: Finished difference Result 456 states and 554 transitions. [2023-12-02 14:37:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 14:37:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2023-12-02 14:37:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:37:23,112 INFO L225 Difference]: With dead ends: 456 [2023-12-02 14:37:23,112 INFO L226 Difference]: Without dead ends: 242 [2023-12-02 14:37:23,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 146 SyntacticMatches, 54 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1912 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=412, Invalid=1476, Unknown=4, NotChecked=0, Total=1892 [2023-12-02 14:37:23,114 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 685 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:37:23,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 3 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1094 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 14:37:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-02 14:37:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 135. [2023-12-02 14:37:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:37:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2023-12-02 14:37:23,126 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 90 [2023-12-02 14:37:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:37:23,127 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2023-12-02 14:37:23,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:37:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2023-12-02 14:37:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 14:37:23,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:37:23,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:37:23,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 14:37:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 14:37:23,329 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:37:23,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:37:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1261089766, now seen corresponding path program 1 times [2023-12-02 14:37:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:37:23,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175472207] [2023-12-02 14:37:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:37:23,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:37:23,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:37:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39265010] [2023-12-02 14:37:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:37:23,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:37:23,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:37:23,339 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:37:23,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 14:37:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:37:23,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:37:23,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:37:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:37:23,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:37:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:37:23,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:37:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175472207] [2023-12-02 14:37:23,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:37:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39265010] [2023-12-02 14:37:23,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39265010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:37:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1513656298] [2023-12-02 14:37:23,777 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 14:37:23,777 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:37:23,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:37:23,778 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:37:23,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:37:26,928 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:37:26,960 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:38:02,891 WARN L293 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 97 DAG size of output: 37 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:39:07,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11735#(and (<= 1 |#StackHeapBarrier|) (<= 1537228672809129302 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 6 ~counter~0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 256) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15))) (<= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 307445734561825860)))' at error location [2023-12-02 14:39:07,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:39:07,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:39:07,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-02 14:39:07,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040191195] [2023-12-02 14:39:07,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:39:07,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:39:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:39:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:39:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1038, Unknown=6, NotChecked=0, Total=1190 [2023-12-02 14:39:07,739 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:39:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:39:08,000 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2023-12-02 14:39:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 14:39:08,001 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 123 [2023-12-02 14:39:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:39:08,003 INFO L225 Difference]: With dead ends: 300 [2023-12-02 14:39:08,003 INFO L226 Difference]: Without dead ends: 289 [2023-12-02 14:39:08,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 261 SyntacticMatches, 73 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 100.9s TimeCoverageRelationStatistics Valid=254, Invalid=1632, Unknown=6, NotChecked=0, Total=1892 [2023-12-02 14:39:08,004 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 28 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:39:08,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 445 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:39:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-02 14:39:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-12-02 14:39:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 275 states have (on average 1.0145454545454546) internal successors, (279), 276 states have internal predecessors, (279), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:39:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 289 transitions. [2023-12-02 14:39:08,025 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 289 transitions. Word has length 123 [2023-12-02 14:39:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:39:08,026 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 289 transitions. [2023-12-02 14:39:08,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:39:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 289 transitions. [2023-12-02 14:39:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 14:39:08,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:39:08,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-12-02 14:39:08,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 14:39:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 14:39:08,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:39:08,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:39:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash 137783880, now seen corresponding path program 1 times [2023-12-02 14:39:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:39:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700258939] [2023-12-02 14:39:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:39:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:39:08,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:39:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406984714] [2023-12-02 14:39:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:39:08,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:39:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:39:08,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:39:08,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 14:39:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:39:08,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:39:08,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:39:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:39:08,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:39:08,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:39:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700258939] [2023-12-02 14:39:08,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:39:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406984714] [2023-12-02 14:39:08,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406984714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:39:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793892376] [2023-12-02 14:39:08,634 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 14:39:08,634 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:39:08,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:39:08,634 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:39:08,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:39:11,361 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:39:11,389 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:40:37,783 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12852#(and (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1537228672809129301) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1537228672809129302 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 ~counter~0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) (<= |ULTIMATE.start_main_~k~0#1| 256))' at error location [2023-12-02 14:40:37,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:40:37,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:40:37,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-12-02 14:40:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022112678] [2023-12-02 14:40:37,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:40:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:40:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:40:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:40:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=685, Unknown=5, NotChecked=0, Total=812 [2023-12-02 14:40:37,786 INFO L87 Difference]: Start difference. First operand 287 states and 289 transitions. Second operand has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:40:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:40:38,030 INFO L93 Difference]: Finished difference Result 288 states and 289 transitions. [2023-12-02 14:40:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:40:38,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2023-12-02 14:40:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:40:38,032 INFO L225 Difference]: With dead ends: 288 [2023-12-02 14:40:38,032 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 14:40:38,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 182 SyntacticMatches, 64 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 86.4s TimeCoverageRelationStatistics Valid=122, Invalid=685, Unknown=5, NotChecked=0, Total=812 [2023-12-02 14:40:38,033 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:40:38,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:40:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 14:40:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-02 14:40:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 275 states have (on average 1.010909090909091) internal successors, (278), 276 states have internal predecessors, (278), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:40:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2023-12-02 14:40:38,055 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 123 [2023-12-02 14:40:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:40:38,055 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2023-12-02 14:40:38,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:40:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2023-12-02 14:40:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 14:40:38,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:38,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-12-02 14:40:38,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 14:40:38,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 14:40:38,258 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:40:38,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash -589263985, now seen corresponding path program 2 times [2023-12-02 14:40:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:38,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254640786] [2023-12-02 14:40:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:38,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:38,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:40:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657782987] [2023-12-02 14:40:38,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:40:38,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:40:38,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:40:38,271 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:40:38,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 14:40:43,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 14:40:43,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:40:43,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:40:43,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:40:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:40:44,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:40:44,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:40:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254640786] [2023-12-02 14:40:44,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:40:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657782987] [2023-12-02 14:40:44,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657782987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:40:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139712295] [2023-12-02 14:40:44,345 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 14:40:44,345 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:40:44,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:40:44,345 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:40:44,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:40:46,960 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:40:46,993 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:42:02,785 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14101#(and (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1537228672809129301) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1537228672809129302 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 ~counter~0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) (<= |ULTIMATE.start_main_~k~0#1| 256))' at error location [2023-12-02 14:42:02,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:42:02,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:42:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 14:42:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654697346] [2023-12-02 14:42:02,786 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:42:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:42:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:42:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:42:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=635, Unknown=2, NotChecked=0, Total=756 [2023-12-02 14:42:02,788 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 6 states, 5 states have (on average 33.8) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:42:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:42:03,077 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2023-12-02 14:42:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:42:03,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 33.8) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 177 [2023-12-02 14:42:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:42:03,079 INFO L225 Difference]: With dead ends: 288 [2023-12-02 14:42:03,080 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 14:42:03,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 256 SyntacticMatches, 99 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 75.8s TimeCoverageRelationStatistics Valid=119, Invalid=635, Unknown=2, NotChecked=0, Total=756 [2023-12-02 14:42:03,081 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:42:03,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 77 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:42:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 14:42:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-02 14:42:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:42:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2023-12-02 14:42:03,097 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 177 [2023-12-02 14:42:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:42:03,097 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2023-12-02 14:42:03,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 33.8) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:42:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2023-12-02 14:42:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-02 14:42:03,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:42:03,099 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-12-02 14:42:03,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 14:42:03,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 14:42:03,299 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:42:03,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:42:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1553231466, now seen corresponding path program 3 times [2023-12-02 14:42:03,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:42:03,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387274070] [2023-12-02 14:42:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:42:03,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:42:03,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:42:03,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613772197] [2023-12-02 14:42:03,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:42:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:42:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:42:03,317 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:42:03,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 14:42:03,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:42:03,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:42:03,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:42:03,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:42:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:42:04,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:42:04,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:42:04,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387274070] [2023-12-02 14:42:04,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:42:04,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613772197] [2023-12-02 14:42:04,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613772197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:42:04,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [139847700] [2023-12-02 14:42:04,144 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 14:42:04,144 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:42:04,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:42:04,144 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:42:04,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:42:06,969 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:42:06,998 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:43:49,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15511#(and (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1537228672809129301) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1537228672809129302 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 ~counter~0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) (<= |ULTIMATE.start_main_~k~0#1| 256))' at error location [2023-12-02 14:43:49,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:43:49,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:43:49,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 14:43:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665432094] [2023-12-02 14:43:49,098 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:43:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:43:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:43:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:43:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=893, Unknown=10, NotChecked=0, Total=1056 [2023-12-02 14:43:49,100 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 7 states have internal predecessors, (220), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:43:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:43:49,427 INFO L93 Difference]: Finished difference Result 328 states and 329 transitions. [2023-12-02 14:43:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:43:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 7 states have internal predecessors, (220), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 231 [2023-12-02 14:43:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:43:49,429 INFO L225 Difference]: With dead ends: 328 [2023-12-02 14:43:49,429 INFO L226 Difference]: Without dead ends: 327 [2023-12-02 14:43:49,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 336 SyntacticMatches, 122 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2918 ImplicationChecksByTransitivity, 102.0s TimeCoverageRelationStatistics Valid=153, Invalid=893, Unknown=10, NotChecked=0, Total=1056 [2023-12-02 14:43:49,431 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:43:49,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 73 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:43:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-02 14:43:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 297. [2023-12-02 14:43:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:43:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2023-12-02 14:43:49,453 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 231 [2023-12-02 14:43:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:43:49,453 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2023-12-02 14:43:49,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 7 states have internal predecessors, (220), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:43:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2023-12-02 14:43:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-12-02 14:43:49,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:43:49,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:43:49,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 14:43:49,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:43:49,659 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:43:49,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:43:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1845971461, now seen corresponding path program 2 times [2023-12-02 14:43:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:43:49,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148300007] [2023-12-02 14:43:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:43:49,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:43:49,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:43:49,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103323044] [2023-12-02 14:43:49,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:43:49,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:43:49,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:43:49,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:43:49,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 14:44:30,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 14:44:30,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:44:30,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:44:30,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:44:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 14:44:30,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:44:30,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:44:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148300007] [2023-12-02 14:44:30,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:44:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103323044] [2023-12-02 14:44:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103323044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:44:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574563172] [2023-12-02 14:44:30,757 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 14:44:30,758 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:44:30,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:44:30,758 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:44:30,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:44:33,630 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:44:33,661 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:46:59,917 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17139#(and (<= 1 |#StackHeapBarrier|) (<= 1537228672809129302 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 6 ~counter~0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 256) (= (+ (* 30 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 10) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 15))) (<= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 307445734561825860)))' at error location [2023-12-02 14:46:59,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:46:59,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:46:59,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 14:46:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000669954] [2023-12-02 14:46:59,917 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:46:59,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:46:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:46:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:46:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=838, Unknown=5, NotChecked=0, Total=992 [2023-12-02 14:46:59,919 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand has 8 states, 7 states have (on average 38.714285714285715) internal successors, (271), 8 states have internal predecessors, (271), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:47:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:00,323 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2023-12-02 14:47:00,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:47:00,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 38.714285714285715) internal successors, (271), 8 states have internal predecessors, (271), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 285 [2023-12-02 14:47:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:00,326 INFO L225 Difference]: With dead ends: 391 [2023-12-02 14:47:00,327 INFO L226 Difference]: Without dead ends: 379 [2023-12-02 14:47:00,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 404 SyntacticMatches, 163 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4066 ImplicationChecksByTransitivity, 146.2s TimeCoverageRelationStatistics Valid=149, Invalid=838, Unknown=5, NotChecked=0, Total=992 [2023-12-02 14:47:00,328 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:00,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 73 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:47:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-02 14:47:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 349. [2023-12-02 14:47:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 336 states have (on average 1.005952380952381) internal successors, (338), 337 states have internal predecessors, (338), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 14:47:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2023-12-02 14:47:00,347 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 285 [2023-12-02 14:47:00,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:00,348 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2023-12-02 14:47:00,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 38.714285714285715) internal successors, (271), 8 states have internal predecessors, (271), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 14:47:00,348 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2023-12-02 14:47:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-02 14:47:00,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:00,352 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:00,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 14:47:00,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:47:00,553 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-12-02 14:47:00,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1934076542, now seen corresponding path program 3 times [2023-12-02 14:47:00,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:47:00,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700687226] [2023-12-02 14:47:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:00,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:47:00,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:47:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497318897] [2023-12-02 14:47:00,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:47:00,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:47:00,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:47:00,573 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:47:00,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da324df4-9418-4bd0-932d-71ef8e836b22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 14:47:00,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:47:00,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:47:00,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:47:00,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 829 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:01,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:47:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 799 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 14:47:01,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:47:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700687226] [2023-12-02 14:47:01,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:47:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497318897] [2023-12-02 14:47:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497318897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:47:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1919303753] [2023-12-02 14:47:01,707 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 14:47:01,707 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:47:01,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:47:01,708 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:47:01,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:47:04,761 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-12-02 14:47:04,789 INFO L180 IcfgInterpreter]: Interpretation finished