./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:57,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:58,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:58:58,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:58,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:58,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:58,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:58,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:58,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:58,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:58,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:58,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:58,181 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:58,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:58,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:58:58,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:58,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:58,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:58,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:58,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:58:58,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:58,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:58:58,187 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:58:58,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:58:58,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:58,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:58:58,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:58,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:58,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:58,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:58,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:58,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:58,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:58,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:58:58,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:58,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:58,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:58,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:58:58,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:58,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:58,195 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:58,195 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-11-06 21:58:58,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:58,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:58,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:58,526 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:58,527 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:58,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-11-06 21:59:01,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:59:01,840 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:59:01,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-11-06 21:59:01,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/data/ba1a6d7a7/dd49a354e6034cb285f0d23233903508/FLAG625d0251c [2023-11-06 21:59:01,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/data/ba1a6d7a7/dd49a354e6034cb285f0d23233903508 [2023-11-06 21:59:01,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:59:01,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:59:01,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:01,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:59:01,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:59:01,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:01" (1/1) ... [2023-11-06 21:59:01,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647fe3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:01, skipping insertion in model container [2023-11-06 21:59:01,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:01" (1/1) ... [2023-11-06 21:59:01,898 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:59:02,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:02,062 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:59:02,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:02,094 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:59:02,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02 WrapperNode [2023-11-06 21:59:02,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:02,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:02,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:59:02,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:59:02,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,126 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-11-06 21:59:02,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:02,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:59:02,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:59:02,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:59:02,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:59:02,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:59:02,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:59:02,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:59:02,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:02,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:02,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:59:02,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:59:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:59:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-11-06 21:59:02,231 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-11-06 21:59:02,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:59:02,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:59:02,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:59:02,311 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:59:02,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:59:02,481 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:59:02,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:59:02,488 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:59:02,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:02 BoogieIcfgContainer [2023-11-06 21:59:02,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:59:02,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:59:02,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:59:02,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:59:02,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:01" (1/3) ... [2023-11-06 21:59:02,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555b3f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:02, skipping insertion in model container [2023-11-06 21:59:02,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (2/3) ... [2023-11-06 21:59:02,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555b3f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:02, skipping insertion in model container [2023-11-06 21:59:02,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:02" (3/3) ... [2023-11-06 21:59:02,501 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-11-06 21:59:02,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:59:02,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 21:59:02,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:59:02,582 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9ccaffd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:59:02,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 21:59:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 29 states have internal predecessors, (34), 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) [2023-11-06 21:59:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:59:02,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:02,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:02,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:02,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash 617854126, now seen corresponding path program 1 times [2023-11-06 21:59:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142159273] [2023-11-06 21:59:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:02,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142159273] [2023-11-06 21:59:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142159273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:02,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:02,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583909504] [2023-11-06 21:59:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:02,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:02,834 INFO L87 Difference]: Start difference. First operand has 35 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 29 states have internal predecessors, (34), 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) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:02,897 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-11-06 21:59:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:02,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:59:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:02,910 INFO L225 Difference]: With dead ends: 40 [2023-11-06 21:59:02,915 INFO L226 Difference]: Without dead ends: 29 [2023-11-06 21:59:02,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:02,922 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:02,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:59:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-06 21:59:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-11-06 21:59:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 21:59:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-11-06 21:59:02,981 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2023-11-06 21:59:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:02,982 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-11-06 21:59:02,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-06 21:59:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 21:59:02,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:02,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:02,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:02,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:02,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1973608759, now seen corresponding path program 1 times [2023-11-06 21:59:02,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:02,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633924224] [2023-11-06 21:59:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:02,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633924224] [2023-11-06 21:59:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633924224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578290569] [2023-11-06 21:59:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:03,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:03,177 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:03,324 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-11-06 21:59:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:03,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 21:59:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:03,326 INFO L225 Difference]: With dead ends: 64 [2023-11-06 21:59:03,326 INFO L226 Difference]: Without dead ends: 42 [2023-11-06 21:59:03,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:59:03,329 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:03,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-06 21:59:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-11-06 21:59:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 21:59:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-11-06 21:59:03,341 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2023-11-06 21:59:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:03,342 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-11-06 21:59:03,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-11-06 21:59:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 21:59:03,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:03,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:03,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:59:03,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:03,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1052546898, now seen corresponding path program 1 times [2023-11-06 21:59:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698073123] [2023-11-06 21:59:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698073123] [2023-11-06 21:59:03,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698073123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:03,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718189044] [2023-11-06 21:59:03,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:03,426 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:03,518 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-11-06 21:59:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 21:59:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:03,521 INFO L225 Difference]: With dead ends: 58 [2023-11-06 21:59:03,521 INFO L226 Difference]: Without dead ends: 57 [2023-11-06 21:59:03,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:59:03,526 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:03,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 65 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-06 21:59:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-11-06 21:59:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 21:59:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-11-06 21:59:03,542 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-11-06 21:59:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:03,542 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-11-06 21:59:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-11-06 21:59:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:59:03,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:03,544 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:03,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:59:03,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:03,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash -749777878, now seen corresponding path program 1 times [2023-11-06 21:59:03,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:03,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995882221] [2023-11-06 21:59:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:03,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:03,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995882221] [2023-11-06 21:59:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995882221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:03,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753085709] [2023-11-06 21:59:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:03,642 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:03,814 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-11-06 21:59:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:03,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 21:59:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:03,823 INFO L225 Difference]: With dead ends: 77 [2023-11-06 21:59:03,823 INFO L226 Difference]: Without dead ends: 76 [2023-11-06 21:59:03,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:03,825 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:03,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 75 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-06 21:59:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-11-06 21:59:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 21:59:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-11-06 21:59:03,848 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-11-06 21:59:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:03,848 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-11-06 21:59:03,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-11-06 21:59:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:59:03,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:03,857 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:59:03,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:03,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1029564684, now seen corresponding path program 1 times [2023-11-06 21:59:03,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:03,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429880320] [2023-11-06 21:59:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:03,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429880320] [2023-11-06 21:59:03,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429880320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31184543] [2023-11-06 21:59:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:03,991 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:59:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:04,071 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-11-06 21:59:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-06 21:59:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:04,078 INFO L225 Difference]: With dead ends: 121 [2023-11-06 21:59:04,078 INFO L226 Difference]: Without dead ends: 85 [2023-11-06 21:59:04,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:59:04,081 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:04,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 93 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:59:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-06 21:59:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-11-06 21:59:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 21:59:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-11-06 21:59:04,106 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-11-06 21:59:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:04,106 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-11-06 21:59:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:59:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-11-06 21:59:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:59:04,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:04,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:59:04,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:04,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1851951645, now seen corresponding path program 1 times [2023-11-06 21:59:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255530925] [2023-11-06 21:59:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:04,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255530925] [2023-11-06 21:59:04,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255530925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:04,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:04,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:04,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781810022] [2023-11-06 21:59:04,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:04,247 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:59:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:04,347 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-11-06 21:59:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-06 21:59:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:04,365 INFO L225 Difference]: With dead ends: 102 [2023-11-06 21:59:04,365 INFO L226 Difference]: Without dead ends: 101 [2023-11-06 21:59:04,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:59:04,371 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:04,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 106 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-06 21:59:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-11-06 21:59:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 21:59:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-11-06 21:59:04,410 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-11-06 21:59:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:04,411 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-11-06 21:59:04,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:59:04,411 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-11-06 21:59:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:59:04,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:04,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:04,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:59:04,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:04,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1700557631, now seen corresponding path program 1 times [2023-11-06 21:59:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:04,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843465878] [2023-11-06 21:59:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:59:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843465878] [2023-11-06 21:59:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843465878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987772278] [2023-11-06 21:59:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:04,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:04,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:04,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:04,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:59:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:04,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:59:04,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:04,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:04,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987772278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:04,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:04,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-11-06 21:59:04,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950994882] [2023-11-06 21:59:04,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:04,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:59:04,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:59:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:59:04,862 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:59:05,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:05,038 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-11-06 21:59:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:59:05,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-06 21:59:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:05,043 INFO L225 Difference]: With dead ends: 152 [2023-11-06 21:59:05,043 INFO L226 Difference]: Without dead ends: 151 [2023-11-06 21:59:05,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:59:05,046 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:05,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 131 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-06 21:59:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-11-06 21:59:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:59:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-11-06 21:59:05,090 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-11-06 21:59:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:05,091 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-11-06 21:59:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:59:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-11-06 21:59:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 21:59:05,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:05,096 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:05,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:05,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:05,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:05,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -490229936, now seen corresponding path program 1 times [2023-11-06 21:59:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:05,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811947874] [2023-11-06 21:59:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:05,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:59:05,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811947874] [2023-11-06 21:59:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811947874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:05,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:59:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311305177] [2023-11-06 21:59:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:05,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:05,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:05,427 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:05,482 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-11-06 21:59:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 21:59:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:05,484 INFO L225 Difference]: With dead ends: 163 [2023-11-06 21:59:05,484 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 21:59:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:05,486 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:59:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 21:59:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-11-06 21:59:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 21:59:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-11-06 21:59:05,493 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-11-06 21:59:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:05,494 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-11-06 21:59:05,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-06 21:59:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 21:59:05,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:05,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:59:05,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:05,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1177679063, now seen corresponding path program 1 times [2023-11-06 21:59:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380301677] [2023-11-06 21:59:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:05,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:59:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:05,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:05,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380301677] [2023-11-06 21:59:05,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380301677] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:05,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821359177] [2023-11-06 21:59:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:05,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:05,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:05,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:05,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:59:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:05,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:59:05,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:05,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:05,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821359177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:05,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:05,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 21:59:05,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213895699] [2023-11-06 21:59:05,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:59:05,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:59:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:59:05,850 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:59:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:05,958 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-11-06 21:59:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:59:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-11-06 21:59:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:05,960 INFO L225 Difference]: With dead ends: 65 [2023-11-06 21:59:05,960 INFO L226 Difference]: Without dead ends: 64 [2023-11-06 21:59:05,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:05,963 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:05,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-06 21:59:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-11-06 21:59:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-06 21:59:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-11-06 21:59:05,975 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-11-06 21:59:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:05,975 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-11-06 21:59:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:59:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-11-06 21:59:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 21:59:05,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:05,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:05,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:06,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 21:59:06,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:06,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1664379658, now seen corresponding path program 1 times [2023-11-06 21:59:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:06,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504118838] [2023-11-06 21:59:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 21:59:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:59:06,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:06,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504118838] [2023-11-06 21:59:06,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504118838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:06,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732776996] [2023-11-06 21:59:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:06,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:06,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:06,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:59:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:59:06,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:59:06,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:59:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732776996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:06,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:06,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-11-06 21:59:06,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137625100] [2023-11-06 21:59:06,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:06,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:59:06,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:06,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:59:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:59:06,461 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:59:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:06,552 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-11-06 21:59:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:59:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-11-06 21:59:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:06,554 INFO L225 Difference]: With dead ends: 71 [2023-11-06 21:59:06,554 INFO L226 Difference]: Without dead ends: 70 [2023-11-06 21:59:06,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:59:06,555 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:06,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 122 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:59:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-06 21:59:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-11-06 21:59:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.127659574468085) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-06 21:59:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-11-06 21:59:06,563 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-11-06 21:59:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:06,563 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-11-06 21:59:06,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:59:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-11-06 21:59:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 21:59:06,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:06,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:06,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:06,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:06,771 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:06,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 56161900, now seen corresponding path program 1 times [2023-11-06 21:59:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619983189] [2023-11-06 21:59:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 21:59:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:06,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:06,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619983189] [2023-11-06 21:59:06,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619983189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:06,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272736546] [2023-11-06 21:59:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:06,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:06,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:06,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:59:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:06,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:59:06,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:07,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272736546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:07,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:07,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-11-06 21:59:07,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995667356] [2023-11-06 21:59:07,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:07,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:59:07,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:07,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:59:07,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:59:07,177 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:59:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:07,380 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-11-06 21:59:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:59:07,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-06 21:59:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:07,382 INFO L225 Difference]: With dead ends: 93 [2023-11-06 21:59:07,382 INFO L226 Difference]: Without dead ends: 60 [2023-11-06 21:59:07,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:59:07,385 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:07,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 104 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-06 21:59:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-11-06 21:59:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-06 21:59:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-11-06 21:59:07,398 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-11-06 21:59:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:07,398 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-11-06 21:59:07,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:59:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-11-06 21:59:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 21:59:07,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:07,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:07,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:07,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:07,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1495284169, now seen corresponding path program 1 times [2023-11-06 21:59:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871718377] [2023-11-06 21:59:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:59:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:07,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871718377] [2023-11-06 21:59:07,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871718377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278103980] [2023-11-06 21:59:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:07,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:07,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:07,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:59:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:07,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:59:07,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:07,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278103980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:08,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-06 21:59:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906327075] [2023-11-06 21:59:08,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 21:59:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 21:59:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:59:08,233 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 21:59:08,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:08,498 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-11-06 21:59:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:59:08,499 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-11-06 21:59:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:08,500 INFO L225 Difference]: With dead ends: 91 [2023-11-06 21:59:08,500 INFO L226 Difference]: Without dead ends: 90 [2023-11-06 21:59:08,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-11-06 21:59:08,502 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:08,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 138 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:59:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-06 21:59:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-11-06 21:59:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-06 21:59:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-11-06 21:59:08,510 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 30 [2023-11-06 21:59:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:08,511 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-11-06 21:59:08,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 21:59:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-11-06 21:59:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 21:59:08,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:08,512 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:08,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:08,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:08,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:08,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1892617292, now seen corresponding path program 1 times [2023-11-06 21:59:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:08,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344552107] [2023-11-06 21:59:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 21:59:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:59:08,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344552107] [2023-11-06 21:59:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344552107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698593413] [2023-11-06 21:59:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:08,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:08,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:08,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:08,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:59:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:08,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:59:09,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 21:59:09,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 21:59:09,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698593413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:09,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:09,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2023-11-06 21:59:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193928110] [2023-11-06 21:59:09,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 21:59:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 21:59:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-06 21:59:09,215 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-06 21:59:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:09,536 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2023-11-06 21:59:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 21:59:09,537 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 37 [2023-11-06 21:59:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:09,540 INFO L225 Difference]: With dead ends: 118 [2023-11-06 21:59:09,540 INFO L226 Difference]: Without dead ends: 111 [2023-11-06 21:59:09,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2023-11-06 21:59:09,542 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 97 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:09,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 105 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:59:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-06 21:59:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2023-11-06 21:59:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-06 21:59:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-11-06 21:59:09,552 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2023-11-06 21:59:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:09,553 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-11-06 21:59:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-06 21:59:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-11-06 21:59:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 21:59:09,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:09,556 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:09,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:09,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 21:59:09,762 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:09,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1668452707, now seen corresponding path program 2 times [2023-11-06 21:59:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324938062] [2023-11-06 21:59:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:59:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 21:59:10,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324938062] [2023-11-06 21:59:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324938062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519109518] [2023-11-06 21:59:10,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:10,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:10,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:10,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:10,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:59:10,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:59:10,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:10,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 21:59:10,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 21:59:10,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 99 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-06 21:59:11,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519109518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:11,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:11,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-11-06 21:59:11,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646461341] [2023-11-06 21:59:11,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:11,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 21:59:11,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:11,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 21:59:11,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-11-06 21:59:11,616 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 21:59:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:12,306 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-11-06 21:59:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 21:59:12,307 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 64 [2023-11-06 21:59:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:12,308 INFO L225 Difference]: With dead ends: 145 [2023-11-06 21:59:12,308 INFO L226 Difference]: Without dead ends: 144 [2023-11-06 21:59:12,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2023-11-06 21:59:12,310 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 246 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:12,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 186 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:59:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-06 21:59:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2023-11-06 21:59:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-06 21:59:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-11-06 21:59:12,320 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 64 [2023-11-06 21:59:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:12,321 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-11-06 21:59:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 21:59:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-11-06 21:59:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 21:59:12,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:12,322 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:12,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:12,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:12,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash 198328012, now seen corresponding path program 2 times [2023-11-06 21:59:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:12,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339616159] [2023-11-06 21:59:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 21:59:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 21:59:12,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:12,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339616159] [2023-11-06 21:59:12,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339616159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942983203] [2023-11-06 21:59:12,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:12,693 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:12,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:59:12,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:59:12,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:12,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:59:12,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:59:12,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942983203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:13,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:13,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 28 [2023-11-06 21:59:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822960787] [2023-11-06 21:59:13,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 21:59:13,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:13,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 21:59:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2023-11-06 21:59:13,410 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 29 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 26 states have internal predecessors, (93), 12 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-06 21:59:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:14,113 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2023-11-06 21:59:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 21:59:14,113 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 26 states have internal predecessors, (93), 12 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) Word has length 48 [2023-11-06 21:59:14,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:14,115 INFO L225 Difference]: With dead ends: 161 [2023-11-06 21:59:14,115 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 21:59:14,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 21:59:14,117 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 168 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:14,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 144 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:59:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 21:59:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 103. [2023-11-06 21:59:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-06 21:59:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-11-06 21:59:14,127 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 48 [2023-11-06 21:59:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:14,127 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-11-06 21:59:14,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 26 states have internal predecessors, (93), 12 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-06 21:59:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-11-06 21:59:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 21:59:14,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:14,129 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:14,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:14,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:14,335 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:14,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:14,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2026872518, now seen corresponding path program 3 times [2023-11-06 21:59:14,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:14,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987178187] [2023-11-06 21:59:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:14,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 21:59:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 119 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 21:59:14,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987178187] [2023-11-06 21:59:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987178187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799170961] [2023-11-06 21:59:14,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:59:14,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:14,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:14,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:59:14,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-06 21:59:14,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:14,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 21:59:14,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-06 21:59:15,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 68 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:59:16,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799170961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:16,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:16,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2023-11-06 21:59:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033871131] [2023-11-06 21:59:16,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:16,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 21:59:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 21:59:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 21:59:16,201 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-06 21:59:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:17,803 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2023-11-06 21:59:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 21:59:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 70 [2023-11-06 21:59:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:17,805 INFO L225 Difference]: With dead ends: 222 [2023-11-06 21:59:17,805 INFO L226 Difference]: Without dead ends: 197 [2023-11-06 21:59:17,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=913, Invalid=4637, Unknown=0, NotChecked=0, Total=5550 [2023-11-06 21:59:17,810 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 331 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:17,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 210 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:59:17,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-06 21:59:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 123. [2023-11-06 21:59:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-06 21:59:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2023-11-06 21:59:17,821 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 70 [2023-11-06 21:59:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:17,822 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2023-11-06 21:59:17,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-06 21:59:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2023-11-06 21:59:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 21:59:17,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:17,824 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:17,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:18,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 21:59:18,031 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:18,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash 552281719, now seen corresponding path program 3 times [2023-11-06 21:59:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:18,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016828324] [2023-11-06 21:59:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:18,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:59:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-06 21:59:19,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016828324] [2023-11-06 21:59:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016828324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258358068] [2023-11-06 21:59:19,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:59:19,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:19,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:19,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:19,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:59:19,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-06 21:59:19,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:19,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 21:59:19,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-06 21:59:20,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 30 proven. 199 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-06 21:59:26,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258358068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:26,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:26,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-11-06 21:59:26,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938553945] [2023-11-06 21:59:26,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:26,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-06 21:59:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-06 21:59:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-11-06 21:59:26,222 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (8), 3 states have call predecessors, (8), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-06 21:59:27,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:27,892 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2023-11-06 21:59:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-06 21:59:27,893 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (8), 3 states have call predecessors, (8), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) Word has length 96 [2023-11-06 21:59:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:27,895 INFO L225 Difference]: With dead ends: 237 [2023-11-06 21:59:27,895 INFO L226 Difference]: Without dead ends: 236 [2023-11-06 21:59:27,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-11-06 21:59:27,898 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 418 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:27,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 218 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:59:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-06 21:59:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 163. [2023-11-06 21:59:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (42), 28 states have call predecessors, (42), 5 states have call successors, (42) [2023-11-06 21:59:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2023-11-06 21:59:27,913 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 96 [2023-11-06 21:59:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:27,913 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2023-11-06 21:59:27,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (8), 3 states have call predecessors, (8), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-06 21:59:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2023-11-06 21:59:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-06 21:59:27,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:27,920 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:27,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:28,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 21:59:28,135 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:28,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1177788742, now seen corresponding path program 4 times [2023-11-06 21:59:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136248511] [2023-11-06 21:59:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 21:59:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 2 proven. 317 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-06 21:59:29,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136248511] [2023-11-06 21:59:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136248511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:29,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684403021] [2023-11-06 21:59:29,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:59:29,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:29,719 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:29,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:59:29,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:59:29,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:29,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 21:59:29,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 2 proven. 317 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-06 21:59:30,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 32 proven. 319 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 21:59:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684403021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:36,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2023-11-06 21:59:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001740763] [2023-11-06 21:59:36,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-06 21:59:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-06 21:59:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2023-11-06 21:59:36,341 INFO L87 Difference]: Start difference. First operand 163 states and 184 transitions. Second operand has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-06 21:59:39,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:39,395 INFO L93 Difference]: Finished difference Result 330 states and 369 transitions. [2023-11-06 21:59:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-06 21:59:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) Word has length 114 [2023-11-06 21:59:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:39,398 INFO L225 Difference]: With dead ends: 330 [2023-11-06 21:59:39,399 INFO L226 Difference]: Without dead ends: 302 [2023-11-06 21:59:39,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1872, Invalid=12890, Unknown=0, NotChecked=0, Total=14762 [2023-11-06 21:59:39,405 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 723 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:39,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 500 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 21:59:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-06 21:59:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 267. [2023-11-06 21:59:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 214 states have (on average 1.0327102803738317) internal successors, (221), 213 states have internal predecessors, (221), 9 states have call successors, (9), 6 states have call predecessors, (9), 43 states have return successors, (61), 47 states have call predecessors, (61), 7 states have call successors, (61) [2023-11-06 21:59:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2023-11-06 21:59:39,422 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 114 [2023-11-06 21:59:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:39,423 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2023-11-06 21:59:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-06 21:59:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2023-11-06 21:59:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-06 21:59:39,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:39,426 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 13, 13, 13, 13, 12, 11, 11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:39,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:39,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:59:39,637 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:39,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1127365148, now seen corresponding path program 5 times [2023-11-06 21:59:39,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:39,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436739216] [2023-11-06 21:59:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:39,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:59:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 249 proven. 349 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-06 21:59:41,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436739216] [2023-11-06 21:59:41,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436739216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892230793] [2023-11-06 21:59:41,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:59:41,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:41,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:41,546 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:41,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:59:41,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-06 21:59:41,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:41,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 21:59:41,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 249 proven. 349 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-06 21:59:42,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 249 proven. 384 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-06 21:59:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892230793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:50,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 24] total 55 [2023-11-06 21:59:50,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626916524] [2023-11-06 21:59:50,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:50,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-06 21:59:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-06 21:59:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2699, Unknown=0, NotChecked=0, Total=3080 [2023-11-06 21:59:50,606 INFO L87 Difference]: Start difference. First operand 267 states and 291 transitions. Second operand has 56 states, 55 states have (on average 2.6545454545454548) internal successors, (146), 54 states have internal predecessors, (146), 9 states have call successors, (13), 3 states have call predecessors, (13), 18 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-06 21:59:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:52,811 INFO L93 Difference]: Finished difference Result 386 states and 430 transitions. [2023-11-06 21:59:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-06 21:59:52,813 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.6545454545454548) internal successors, (146), 54 states have internal predecessors, (146), 9 states have call successors, (13), 3 states have call predecessors, (13), 18 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) Word has length 148 [2023-11-06 21:59:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:52,816 INFO L225 Difference]: With dead ends: 386 [2023-11-06 21:59:52,816 INFO L226 Difference]: Without dead ends: 358 [2023-11-06 21:59:52,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1341, Invalid=8559, Unknown=0, NotChecked=0, Total=9900 [2023-11-06 21:59:52,823 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 269 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:52,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 570 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:59:52,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-06 21:59:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 213. [2023-11-06 21:59:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 35 states have return successors, (52), 38 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-06 21:59:52,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2023-11-06 21:59:52,840 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 148 [2023-11-06 21:59:52,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:52,840 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2023-11-06 21:59:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.6545454545454548) internal successors, (146), 54 states have internal predecessors, (146), 9 states have call successors, (13), 3 states have call predecessors, (13), 18 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-06 21:59:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2023-11-06 21:59:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-06 21:59:52,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:52,845 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:52,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:53,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 21:59:53,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2126669985, now seen corresponding path program 4 times [2023-11-06 21:59:53,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:53,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200393600] [2023-11-06 21:59:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:59:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:59:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 723 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-11-06 21:59:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200393600] [2023-11-06 21:59:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200393600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380843210] [2023-11-06 21:59:59,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:59:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:59,371 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:59,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 21:59:59,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:59:59,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:59,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 21:59:59,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 723 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-11-06 22:00:00,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 70 proven. 723 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-11-06 22:01:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380843210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:00,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-11-06 22:01:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537634790] [2023-11-06 22:01:00,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:00,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-11-06 22:01:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-11-06 22:01:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-11-06 22:01:00,582 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-06 22:01:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:05,426 INFO L93 Difference]: Finished difference Result 445 states and 512 transitions. [2023-11-06 22:01:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-06 22:01:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) Word has length 184 [2023-11-06 22:01:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:05,437 INFO L225 Difference]: With dead ends: 445 [2023-11-06 22:01:05,437 INFO L226 Difference]: Without dead ends: 444 [2023-11-06 22:01:05,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7639 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-11-06 22:01:05,444 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 538 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:05,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 725 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:01:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-06 22:01:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 293. [2023-11-06 22:01:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 235 states have (on average 1.0212765957446808) internal successors, (240), 234 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 51 states have return successors, (84), 54 states have call predecessors, (84), 5 states have call successors, (84) [2023-11-06 22:01:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2023-11-06 22:01:05,471 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 184 [2023-11-06 22:01:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:05,472 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2023-11-06 22:01:05,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-06 22:01:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2023-11-06 22:01:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-06 22:01:05,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:05,477 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 19, 19, 19, 19, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:05,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:05,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:05,689 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-06 22:01:05,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -541606244, now seen corresponding path program 6 times [2023-11-06 22:01:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137699180] [2023-11-06 22:01:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:01:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 22:01:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:11,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:01:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 2 proven. 1162 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-06 22:01:13,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:13,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137699180] [2023-11-06 22:01:13,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137699180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:13,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637531135] [2023-11-06 22:01:13,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:01:13,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:13,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:13,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:13,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873b92d3-66df-4a7d-b072-fdcc285e4323/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:01:14,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-11-06 22:01:14,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:01:14,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-06 22:01:14,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 254 proven. 904 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2023-11-06 22:01:15,866 INFO L327 TraceCheckSpWp]: Computing backward predicates...